What is the minimum order quantity for wafer check valves?

Standard MOQ is 20 pieces per size and material grade. Single piece requirements for genuine project needs are accommodated. Bulk project orders of 100 plus pieces qualify for special manufacturer pricing with 15 to 30 percent discount.

Do you supply wafer check valves for fire fighting systems?

Yes. CI wafer check valves with EPDM seats are widely used in fire fighting pump discharge lines, hydrant systems and sprinkler networks across India. They conform to API 594 design standard, IS 776 and IS 5312-1, with PN10 and PN16 fire line pressure ratings. All valves are factory-tested per API 598.

What is the delivery time for wafer check valves from Ahmedabad?

Ready stock sizes in CI dispatch within 2 to 3 working days. Standard orders dispatch in 7 to 10 working days. Bulk project orders of 500 plus pieces require 15 to 20 working days. Door delivery to all Indian states with GST invoice and E-Way bill.

Do you provide GST invoice and material test certificate?

Yes. GST tax invoice with E-Way bill is provided for every shipment. Material test certificates (MTC) as per EN 10204 Type 3.1, hydrostatic test certificates per API 598, dimension drawings and third-party inspection coordination are available on request for EPC and government tender orders.

Can you supply wafer check valves with private labelling?

Yes. OEM and private label supply is available for traders, distributors and brand owners. Valves can be supplied with custom brand marking, packaging and documentation. Minimum quantity applies.

What is a wafer check valve and how does it work?

A wafer check valve is a non-return valve (NRV) installed between two pipe flanges without separate valve flanges. When upstream pressure exceeds downstream pressure, the spring-loaded disc opens allowing flow. When flow stops or reverses, the spring closes the disc instantly, preventing backflow and water hammer damage.

What is the difference between wafer check valve and swing check valve?

Wafer check valves are compact, lightweight, spring-loaded and clamp between flanges with up to 60 percent shorter face-to-face dimension. Swing check valves are larger, heavier, use a swinging disc without spring, and require flanged ends. Wafer type is preferred for tight spaces and faster closure. Swing type handles higher velocities but has poor water hammer protection.

What is the cracking pressure of a wafer check valve?

Cracking pressure depends on valve size. For DN40 it is approximately 15 mbar, for DN50 to DN80 approximately 10 mbar, for DN100 to DN150 approximately 8 mbar, and for DN200 to DN600 approximately 5 mbar. Values are for EPDM seat with SS316 spring and may vary slightly by seat material.

Where is KELOR located and do you supply outside Gujarat?

Krishna Industries (KELOR) is located at 133/1 Ground Floor, Mansuri Block, Opp. Dudheshwar Water Tank, Devjipura, Ahmedabad 380004, Gujarat, India. We supply PAN India to all states and also accept export orders FOB Mundra or Nhava Sheva.

What warranty do you offer on wafer check valves?

Standard warranty is 12 months from date of dispatch against manufacturing defects. For EPC project orders and bulk tenders, 18 to 24 months warranty is negotiable depending on order volume. Every valve is factory-tested per API 598 before dispatch.

What are your payment terms?

Standard orders: 100 percent advance or 50 percent advance plus 50 percent before dispatch. EPC and project orders: negotiable credit terms based on order value and order history. GST invoice provided with every shipment.

Which seat material should I choose for my wafer check valve?

EPDM for water, steam, HVAC and fire fighting applications which is the most common and cost-effective option. NBR (Nitrile) for oil, fuel and hydraulic systems. Viton (FKM) for oil and gas, chemicals and high-temperature applications above 120 degrees Celsius. PTFE for aggressive chemicals and pharmaceutical processes.

Can I get a sample before placing a bulk order?

Yes. 1 to 2 pieces are available at sample cost for your approval before committing to a bulk order. The sample cost is adjusted against your bulk order value. Contact us on WhatsApp with your size, material and seat requirement to request a sample.

What is the price of a CI wafer check valve in India?

CI wafer check valve with EPDM seat starts from approximately Rs 700 per piece for DN50 (2 inch). DN80 (3 inch): Rs 900 to 1500 per piece. DN100 (4 inch): Rs 1200 to 2000 per piece. DN150 (6 inch): Rs 1800 to 3000 per piece. Bulk orders of 100 plus pieces get 15 to 30 percent discount.

Do you hold UL or FM certification for wafer check valves?

We do not currently hold UL or FM certification. All our wafer check valves are factory-tested per API 598 and conform to API 594, IS 776 and IS 5312-1 design standards. Material test certificates and hydro test reports are provided with every valve. For projects requiring UL or FM listed valves, we can guide on alternative sourcing options.

Wafer Check valve (NRV) Manufacturer in India | CI, SS304, SS316 | 1″ to 24″ | API 594 | KELOR

Krishna Industries (KELOR), Ahmedabad — manufacturer and bulk supplier of Single Plate Wafer Check valves (Non-Return Valves / NRV) in Cast Iron, SG Iron, WCB/MS, SS304, SS316, CF8, CF8M and Bronze. Sizes: 1″ to 24″ (DN25 to DN600). API 594 design, PN10/PN16, ANSI 150. Conforming to IS 776 and IS 5312-1. Fire fighting, HVAC, water supply, chemical and oil and gas applications. GST invoice with E-Way bill. PAN India dispatch. Get factory price now.

CI Wafer check valve with EPDM seat — the standard for fire fighting pump discharge, hydrant systems and sprinkler networks across India. Ready stock available in common sizes. Bulk discount on 100+ pcs orders.

💰 CI Wafer Check Valve starting from ₹700/piece (DN50) — SS304 from ₹1,800/pc — Bulk discount on 100+ pcs. Get factory price now.

Wafer Check Valve — Product Photos

Cast Iron CI Wafer Check Valve single plate NRV non-return valve manufacturer India 1 inch to 24 inch API 594 KELOR Ahmedabad — Cast Iron Wafer Check Valve (NRV)

SS Wafer Check Valve stainless steel single plate NRV non-return valve manufacturer chemical seawater applications KELOR India — SS Wafer Check Valve (NRV)

Spring Wafer Type Check Valve NRV non-return valve spring loaded disc wafer type installation between flanges KELOR manufacturer — Spring Wafer Type Check Valve (NRV)

Valves dispatched by Krishna Industries India bulk wafer check valve order packed and ready for shipment from Ahmedabad warehouse — Dispatch Ready — KELOR Ahmedabad Warehouse

⚠️ Note: Actual product appearance may vary by size, material grade and seat selection. Contact us for specific product photos matching your requirement.

What is a Wafer Check Valve?

A wafer check valve (also called wafer type non-return valve, single plate NRV, or wafer type check valve) is a compact, lightweight backflow prevention valve designed to be clamped between two pipe flanges — without requiring its own flanged ends. It operates automatically: opening when upstream pressure exceeds downstream pressure, and closing instantly when flow stops or reverses. This prevents water hammer, pump damage, and reverse flow in piping systems across industrial, commercial and fire protection applications.

In piping terminology, a wafer check valve is the most common type of non-return valve (NRV) specified by MEP consultants, fire protection engineers and EPC contractors across India. Purchase managers also search for this product as wafer type NRV, single plate check valve, waffer check valve, or wafer NRV. As a leading wafer check valve manufacturer in India, KELOR supplies wafer type non-return valves in 9 material grades from DN25 to DN600 — covering fire fighting, HVAC, water supply, chemical processing, oil and gas, and general industrial applications.

How Does a Wafer Type NRV Work?

A wafer type non-return valve uses a spring-loaded single disc that responds to differential pressure across the valve. Understanding this operating principle helps procurement teams specify the correct valve for their piping system:

Forward Flow Opens

Upstream pressure overcomes spring force and disc weight. The disc swings open, allowing fluid to pass through the valve body with minimal resistance and low pressure drop.

Steady Flow

Disc stays fully open during normal flow conditions. Streamlined body design ensures low pressure drop and energy-efficient pump operation across the piping system.

Flow Stops

When the pump stops or flow velocity drops, the spring force immediately begins closing the disc — before reverse flow can begin in the discharge line.

Reverse Flow Blocked

Disc seats tightly against the elastomer seal (EPDM/NBR/Viton/PTFE), creating bubble-tight shutoff. Backflow and water hammer are completely prevented.

What’s Driving Wafer Check Valve Demand in India?

India’s industrial valve market is experiencing unprecedented growth, and the wafer check valve (NRV) segment is at the centre of this surge. Three mega-trends — government water infrastructure programmes, fire safety regulatory enforcement, and the HVAC and construction boom — are creating massive, sustained demand for wafer type non-return valves across every state. As an original wafer check valve manufacturer in Ahmedabad, Gujarat, Krishna Industries (KELOR) is uniquely positioned to supply this demand with factory-direct pricing, PAN India dispatch, and API 594 / IS 776 compliant products.

Three Mega-Trends Fuelling Wafer Check Valve Demand in India

The Indian wafer check valve market is projected to grow at 8–10% CAGR through 2030, driven by these three structural demand drivers that procurement teams, EPC contractors and project engineers must understand:

Government Infrastructure

Jal Jeevan Mission — Rural Water Supply NRV Demand

The Jal Jeevan Mission (JJM) is the Government of India’s flagship programme to provide piped drinking water to every rural household by 2024–2028. With over 190 million tap connections targeted, this programme is the single largest driver of wafer check valve (NRV) demand in India’s water supply sector. Every pump station, distribution main and overhead tank in a JJM project requires non-return valves to prevent backflow and protect pumping equipment.

For JJM projects, the CI wafer check valve with EPDM seat is the most commonly specified NRV — conforming to IS 776 and IS 5312-1, with PN10/PN16 pressure ratings. Cast Iron body provides the durability and cost-effectiveness that government water supply projects demand, while EPDM seat ensures safe, non-contaminating sealing for potable water. KELOR supplies JJM-compliant wafer check valves with MTC (Material Test Certificate), hydro test certificates and dimension drawings — meeting the documentation requirements of state water supply departments and PHED (Public Health Engineering Department) tenders.

Standard JJM specification: CI body, EPDM seat, SS316 spring, PN16 rating, IS 776 / IS 5312-1 compliant
Common JJM sizes: DN50 (2″), DN80 (3″), DN100 (4″), DN150 (6″) — ready stock at Ahmedabad warehouse
Documentation for JJM tenders: MTC per EN 10204 Type 3.1, API 598 hydro test report, IS marking on body, GST invoice with E-Way bill
Bulk JJM supply: 500+ pcs orders with dedicated production scheduling and monthly contract pricing from KELOR Ahmedabad

How KELOR helps JJM contractors: As an original manufacturer based in Ahmedabad, Gujarat, we offer factory-direct pricing on CI wafer check valves for JJM projects — eliminating trader margins. We support PHED and state water supply tenders with third-party inspection (TPI) coordination, MTC and test certificates. PAN India dispatch with GST invoice and E-Way bill. Contact us for JJM project-specific quotations with size-wise pricing and documentation support.

Regulatory Enforcement

Fire Fighting Systems Boom — NRV Demand Surge

India’s fire protection market is experiencing explosive growth driven by stricter enforcement of the National Building Code (NBC) 2016, mandatory fire NOC (No Objection Certificate) requirements, and rapid urbanisation. Every new high-rise building, commercial complex, industrial facility and IT park must install fire fighting systems — and every fire fighting system requires wafer check valves (NRV) at critical points. This regulatory enforcement is creating sustained, non-cyclical demand for fire fighting check valves across all Indian cities.

The CI wafer check valve with EPDM seat is the industry-standard NRV for fire fighting systems in India — used at fire pump discharge, sprinkler risers, hydrant ring mains and deluge valve assemblies. Conforming to API 594 design, IS 776 and IS 5312-1, these valves are specified by fire consultants, MEP engineers and insurance surveyors across the country. KELOR’s fire fighting wafer check valves are factory-tested per API 598 and shipped with test certificates, making them compliant with the documentation requirements of fire NOC inspections and insurance audits.

Fire code compliance: NBC 2016 mandates NRV at every fire pump discharge — wafer check valve is the standard choice
Insurance audit requirement: Fire insurance surveyors verify NRV installation and test certificates during site audits
Fire consultant specification: API 594, IS 776, IS 5312-1 conforming CI wafer NRV with EPDM seat is the default spec
Rapid urbanisation driver: 100+ Smart Cities, metro expansions, IT parks and township projects — all require fire fighting NRV

How KELOR helps fire contractors: We supply CI wafer check valves specifically for fire fighting systems — with ready stock in DN50, DN80, DN100 and DN150 sizes at our Ahmedabad warehouse. API 598 test certificates provided with every valve. TPI coordination for EPC and government fire protection tenders. 2–3 working day dispatch for common sizes. Factory-direct pricing eliminates trader margins on bulk fire protection orders.

Construction Growth

HVAC & Construction Wave — Chilled Water NRV Demand

India’s HVAC market is growing at 15–20% annually, fuelled by commercial real estate development, data centre construction, hospital expansions, and the government’s push for energy-efficient cooling under the ICAP (India Cooling Action Plan). Every chilled water circuit, AHU (Air Handling Unit) connection and cooling tower loop in an HVAC system requires wafer check valves (NRV) to prevent reverse flow and protect chiller pumps from water hammer damage. This makes the HVAC and construction wave the third major driver of wafer check valve demand in India.

For HVAC systems, the CI wafer check valve with EPDM seat is the standard specification for chilled water and condenser water lines, while SS304 wafer check valve with EPDM seat is preferred for high-purity applications in pharma and hospital HVAC. The compact wafer design is especially valuable in mechanical rooms where space is at a premium — with up to 60% shorter face-to-face dimension compared to swing check valves, allowing HVAC contractors to fit more equipment into tight plant room layouts.

HVAC standard specification: CI body, EPDM seat (chilled water rated), SS316 spring, PN16 rating, wafer type installation
Data centre cooling: Massive new demand — every data centre requires redundant chilled water NRV for 24/7 cooling reliability
Hospital HVAC: SS304 body preferred for OT (Operation Theatre) AHU connections and clean room environments
Space advantage: Wafer design saves up to 60% face-to-face space vs swing check — critical in congested mechanical rooms

How KELOR helps HVAC contractors: We supply wafer check valves specifically rated for HVAC chilled water and condenser water applications — CI and SS304 body options with EPDM seat (rated to 120°C for condenser water). Compact wafer design for tight mechanical room installations. MEP consultant-approved specifications. Bulk pricing for HVAC project orders (50+ pcs). Ready stock in common HVAC sizes (DN50 to DN200) at our Ahmedabad warehouse.

₹12,000 Cr+ Indian Industrial Valve
Market (2025 est.)

8–10% CAGR Growth
Check Valve Segment

19 Cr+ JJM Tap Connection
Target

15–20% HVAC Market
Annual Growth

What this means for procurement teams: These three mega-trends are not cyclical — they represent structural, multi-year demand for wafer check valves in India. Sourcing from an original manufacturer like KELOR (Krishna Industries, Ahmedabad) gives you price stability, supply reliability and documentation compliance that traders and resellers cannot match. Whether you are buying 20 pieces for a single building or 5,000 pieces for a state-wide JJM project, factory-direct supply from a Gujarat manufacturer ensures competitive pricing and consistent quality across all orders.

Jal Jeevan Mission — Wafer Check Valve (NRV) Supply by KELOR

The Jal Jeevan Mission (JJM) is transforming India’s rural water supply infrastructure on an unprecedented scale. Launched by the Ministry of Jal Shakti, JJM aims to provide functional household tap connections (FHTC) to every rural household in India — covering over 190 million connections across 28 states and 8 union territories. This massive infrastructure programme requires millions of wafer check valves (non-return valves / NRV) for pump stations, distribution networks, overhead tanks and water treatment plants. KELOR, as an original wafer check valve manufacturer from Ahmedabad, Gujarat, is supplying JJM-compliant NRV to state water supply departments, PHED contractors and EPC companies across India.

Why Wafer Check Valves Are Critical for Jal Jeevan Mission Projects

Every JJM water supply scheme involves pumping water from a source (borewell, river intake, or reservoir) through a network of rising mains, distribution pipelines and overhead service reservoirs to reach rural households. At every pump discharge point, a non-return valve (NRV) is mandatory to prevent reverse flow when the pump stops — protecting the pump from backspin, the piping from water hammer, and the system from loss of prime. The wafer check valve is the preferred NRV type for JJM projects because of its compact design (easy to install between flanges in rural pump houses), low cost (cast iron body with EPDM seat is the most economical option), and reliable spring-assisted closure (prevents water hammer in long rising mains).

KELOR JJM Supply Specifications

Parameter	JJM Standard Specification
Valve Type	Single Plate Wafer Check Valve (NRV) — API 594 design
Body Material	Cast Iron (CI) — most cost-effective for water supply, IS 776 compliant
Seat Material	EPDM — safe for potable water, rated -10°C to +120°C
Spring Material	SS316 — corrosion resistant for long service life in water applications
Pressure Rating	PN16 (standard for JJM rising mains and distribution lines)
Size Range for JJM	DN50 (2″) to DN300 (12″) — covers pump discharge to distribution mains
Standards Compliance	API 594 / IS 776 / IS 5312-1 (required in most JJM tender documents)
Testing	Factory-tested per API 598 with hydro test certificates
Documentation	MTC (EN 10204 Type 3.1), hydro test report, dimension drawings, GST invoice
Third-Party Inspection	TPI coordination available for PHED and state water supply tenders

JJM project supply by KELOR: We are actively supplying CI wafer check valves for Jal Jeevan Mission projects in Rajasthan, Madhya Pradesh, Uttar Pradesh, Maharashtra, Gujarat, Karnataka, Tamil Nadu and other states. Our Ahmedabad manufacturing facility can handle bulk JJM orders (500–10,000+ pcs) with dedicated production scheduling and competitive contract pricing. Every valve ships with API 598 test certificate and MTC — meeting the documentation requirements of PHED and state water supply department tenders. Contact us for JJM project-specific quotations with size-wise pricing, documentation support and delivery scheduling.

Wafer Check Valve — Available Material Grades

As a wafer check valve manufacturer, KELOR supplies all standard material grades for industrial and fire fighting applications. Select your required variant:

CI Wafer Check Valve Cast Iron · Most Popular · Fire Fighting MS/WCB Wafer Check Valve Carbon Steel · Oil and Gas · Steam SS304 Wafer Check Valve Stainless Steel 304 · Food and Pharma SS316 Wafer Check Valve Stainless Steel 316 · Chemical and Marine

Also available on request: SG Iron (Ductile Iron), CF8 (SS304 casting), CF8M (SS316 casting), and Bronze body wafer check valves (NRV). Contact us for pricing and lead time on these grades.

Indian & International Standards for Wafer Check Valves

Wafer check valves in India must conform to specific Indian and international standards. This section provides a comprehensive reference that virtually no competitor page covers — helping fire consultants, MEP engineers and purchase managers specify the correct valve for their projects and tender documents:

Standard	Full Title	Applicability to Wafer Check Valves
IS 776	Cast Iron Check Valves	PRIMARY — cast iron check valve specifications covering material grades, face-to-face dimensions, pressure-temperature ratings and test procedures.
IS 5312-1 (2004)	Swing Check Type Reflux (Non-Return) Valves for Water Supply	PRIMARY — specifies materials, dimensions, pressure ratings and testing for NRVs used in water supply including fire fighting systems.
API 594	Wafer and Wafer-Lug Check Valves	PRIMARY — international design standard for wafer type check valves (single plate and dual plate).
API 598	Valve Inspection and Testing	TESTING — specifies hydrostatic shell test, seat test, and backseat test procedures.
BS EN 16668	Industrial Valves — Check Valves of Metallic Construction	DESIGN — European standard for metallic check valve design.
BS EN 12266	Industrial Valves — Testing of Metallic Valves	TESTING — European equivalent of API 598 for pressure testing.
IS 3844 (1989)	Code of Practice for Fire Safety in Industrial Buildings	REFERENCE — mandates fire protection systems including check valves (NRV).

🛡️ Why Standards Matter for Your Project

Most Indian EPC tenders, fire protection specifications and government procurement documents require check valves conforming to IS 776, IS 5312-1 or API 594. When you source from KELOR, every wafer check valve comes with:

Material Test Certificate (MTC) as per EN 10204 Type 3.1
Hydrostatic test certificate as per API 598 / BS EN 12266
Dimension certificate and certified engineering drawings
Third-party inspection (TPI) coordination for EPC and government tender orders

All valves are factory-tested per API 598 and shipped with test certificates.

Wafer Check Valve Pricing by Material

Below are indicative wafer check valve prices per piece for DN50 (2 inch). Exact pricing depends on size, quantity and seat material.

💰 Indicative Price Range — Per Piece (Ex-Works Ahmedabad, DN50 / 2 inch)

CI Wafer Check Valve₹700 – ₹1,200/pcFire fighting, water, HVAC — Most Popular

SS304 Wafer Check Valve₹1,800 – ₹3,000/pcFood, pharma, mild chemical

SS316 Wafer Check Valve₹2,500 – ₹4,500/pcOffshore, seawater, aggressive chemicals

WCB / MS Wafer Check Valve₹800 – ₹1,500/pcOil, gas, steam, higher temperature

SG Iron (Ductile Iron) Wafer NRV₹650 – ₹1,200/pcHigher pressure water, fire lines

Bronze Wafer Check Valve₹1,200 – ₹2,500/pcSeawater, marine, potable water

Volume Pricing: 10–49 pcs: Standard. 50–99 pcs: 10% discount. 100–499 pcs: 15–20% discount. 500+ pcs: 20–30% discount.

Wafer Check Valve — Size-Wise Price Range (CI Body, EPDM Seat)

Size	DN	CI (per piece)	SS304 (per piece)	SS316 (per piece)
1″	DN25	₹500 – 800	₹1,100 – 1,800	₹1,500 – 2,500
2″	DN50	₹700 – 1,200	₹1,800 – 3,000	₹2,500 – 4,500
2½″	DN65	₹800 – 1,350	₹2,100 – 3,500	₹3,000 – 5,200
3″	DN80	₹900 – 1,500	₹2,500 – 4,000	₹3,500 – 6,000
4″	DN100	₹1,200 – 2,000	₹3,500 – 5,800	₹5,000 – 8,000
6″	DN150	₹1,800 – 3,000	₹5,000 – 8,000	₹7,500 – 12,000
8″	DN200	₹2,500 – 4,000	₹8,000 – 15,000	₹12,000 – 20,000
10″	DN250	₹3,200 – 5,000	₹12,000 – 20,000	₹18,000 – 30,000
12″	DN300	₹3,500 – 5,500	₹15,000 – 25,000	₹20,000 – 35,000

Materials of Construction

Component	Available Materials
Body	Cast Iron (CI) · SG Iron · WCB (Carbon Steel) · MS · SS304 · SS316 · CF8 · CF8M · Bronze
Disc	CI · MS · SS304 · SS316
Seat / Seal	Nitrile (NBR) · EPDM · Viton (FKM) · PTFE
Spring	SS316 (standard on all variants)

Technical Specifications

Parameter	Specification
Valve Type	Single Plate Wafer Check Valve (Non-Return Valve / NRV)
Design Standard	API 594 / BS EN 16668 / IS 776 / IS 5312-1
Testing Standard	API 598 / BS EN 12266
Size Range	1″ to 24″ (DN25 to DN600)
Pressure Rating	PN10 / PN16 / ANSI Class 150
End Connection	Wafer Type (clamp between flanges)
Body Material Options	CI · SG Iron · WCB/MS · SS304 · SS316 · CF8 · CF8M · Bronze
Seat / Seal Options	EPDM · NBR · Viton FKM · PTFE
Spring	SS316 (all variants)
Installation	Horizontal or Vertical (upward flow)
Temperature Range	-10°C to +120°C (EPDM) · -20°C to +200°C (Viton) · up to +200°C (PTFE)
Cracking Pressure	5–15 mbar (depending on size and seat material)
HSN Code	848180
Country of Manufacture	India 🇮🇳 (Dispatched from Ahmedabad, Gujarat)

Wafer Check Valve Dimensions — ØA, ØB, C (mm)

DN	Size (inch)	ØA (mm)	ØB (mm)	C (mm)
DN40	1½″	60	95	14
DN50	2″	60	105	14
DN65	2½″	67	120	16
DN80	3″	73	135	16
DN100	4″	79	160	16
DN125	5″	92	190	18
DN150	6″	105	215	18
DN200	8″	125	270	20
DN250	10″	145	325	22
DN300	12″	160	380	24
DN350	14″	178	440	26
DN400	16″	200	495	28
DN450	18″	220	545	30
DN500	20″	235	600	32
DN600	24″	270	710	36

⚠️ DN25 and DN32 dimensions are available on request. Dimensions may vary by ±2mm based on material grade. Contact KELOR for certified dimension drawings before piping fabrication.

Cracking Pressure Data

DN	Size (inch)	Cracking Pressure (mbar)
DN40	1½″	15
DN50	2″	10
DN80	3″	10
DN100	4″	8
DN150	6″	8
DN200	8″	5
DN300	12″	5
DN350–DN600	14″–24″	5

Material Selection Guide

Grade	Best For	Suitable Media	Avoid
CI (Cast Iron)	Water supply, fire fighting, HVAC, general utilities — most cost-effective	Water, air, non-corrosive fluids	Acids, seawater, aggressive chemicals
SG Iron (Ductile Iron)	Higher pressure water lines, fire fighting, high-rise buildings	Water, air, neutral fluids	Corrosive media
WCB / MS (Carbon Steel)	Oil and gas, steam, higher temperature process lines	Oil, gas, steam, neutral fluids	Corrosive media, wet conditions
SS 304 / CF8	Food processing, pharma, mild chemical, potable water	Water, food-grade fluids, dilute acids	Chloride environments, concentrated acids
SS 316 / CF8M	Offshore platforms, seawater, chemical processing, desalination	Seawater, chlorides, aggressive chemicals	Hydrochloric acid at high concentration
Bronze	Seawater, marine applications, potable water systems	Seawater, water	High temperature, strong acids

Seat Material Selection Guide — EPDM vs NBR vs Viton vs PTFE

Seat Material	Best Applications	Temp. Range	Not Suitable For
EPDM	Fire fighting, water supply, HVAC chilled water, potable water — MOST COMMON	-10°C to +120°C	Oil, fuel, petroleum
NBR (Nitrile)	Oil and gas, hydraulic systems, fuel lines	-20°C to +100°C	Steam, hot water, ozone
Viton (FKM)	Chemical processing, oil and gas (high-temp), aggressive chemicals	-20°C to +200°C	Ketones, esters, hot ammonia
PTFE	Chemical processing, pharmaceutical, food grade, aggressive acids	-200°C to +260°C	High-pressure steam (creep)

Wafer Check Valve vs Swing Check Valve vs Dual Plate Check Valve

Feature	Wafer Check Valve	Swing Check Valve	Dual Plate Check Valve
Design	Single disc, spring-loaded, wafer body	Swinging disc, no spring, flanged body	Two half-discs, spring-loaded, wafer body
Face-to-Face	Shortest — saves pipe space	Longest	Short
Weight	Light	Heavy	Medium
Water Hammer Protection	Good (spring-assisted)	Poor (gravity-dependent)	Excellent (dual spring)
Cost	Lowest	Medium	Higher
Best For	Water, fire, HVAC, utilities	Water mains, high-velocity lines	Oil and gas, petrochemical

Fire Fighting Check Valve — CI Wafer Type NRV

🔥 CI Wafer Check Valve — Standard for Fire Fighting in India

The CI wafer check valve with EPDM seat is the industry-standard NRV for fire fighting systems across India. Conforming to API 594, IS 776 and IS 5312-1, with PN10/PN16 pressure ratings.

Fire Pump DischargeInstalled at fire pump outlet to prevent reverse flow when pump stops

Sprinkler NetworkPrevents backflow from sprinkler zones into main riser

Hydrant SystemProtects hydrant lines from reverse flow and water hammer

Deluge and Pre-ActionUsed in deluge valve trim and pre-action sprinkler systems

Wafer Check Valve Solutions — By Industry and Decision-Maker

Different industries need different wafer check valve specifications. Below, we address each industry and persona directly, with the exact specifications and KELOR supply capabilities you need.

Fire Protection

Wafer Check Valve for Fire Fighting Systems

For: MEP Contractors / Fire Consultants / Fire System Integrators

Every fire fighting system mandates NRV at pump discharge and zone isolation points. CI wafer check valve with EPDM seat is the industry-standard, conforming to API 594, IS 776 and IS 5312-1.

Standard Spec: CI body / EPDM seat / SS316 spring / PN16 / API 594
Common Sizes: DN50, DN80, DN100, DN150 (ready stock)
Documentation: API 598 test cert, MTC, TPI coordination

Get Fire Fighting NRV Quote

HVAC & Chillers

Wafer Check Valve for HVAC Chiller Pump

For: HVAC Contractors / MEP Consultants / Chiller Plant Engineers

HVAC chilled water and condenser water circuits require wafer check valves at every chiller pump discharge. Compact wafer design saves up to 60% face-to-face space vs swing check.

HVAC Spec: CI body / EPDM seat / SS316 spring / PN16
Premium: SS304 body for hospital and pharma HVAC
Sizes: DN50 to DN200 (ready stock)

Get HVAC Chiller NRV Quote

Water Treatment

Wafer Check Valve for Water Treatment & Supply

For: Project Engineers / EPC Contractors / Water Supply Consultants

WTP, STP, pump stations and distribution networks require CI wafer check valves conforming to IS 776 and IS 5312-1 with MTC and TPI support for government tenders.

Water Spec: CI body / EPDM seat / SS316 spring / PN16 / IS 776 / IS 5312-1
JJM Support: MTC, hydro test cert, TPI coordination
Sizes: DN50 to DN300

Get Water Treatment NRV Quote

Oil & Gas / Petrochemical

API 594 Wafer & Dual Plate Check Valve

For: Maintenance Heads / EPC Contractors / Refinery Procurement

Oil and gas refineries require API 594 check valves with WCB or SS316 body, Viton or PTFE seats rated for hydrocarbons and high temperatures.

O&G Spec: WCB or SS316 body / Viton seat / API 594
Dual Plate: Also available for higher-pressure applications
Sizes: DN50 to DN300

Get Oil & Gas Check Valve Quote

Power Plants

Dual Plate Check Valve for Power Plants

For: O&M Contractors / Power Plant Procurement

Power generation plants require reliable check valves for cooling water, condensate return and utility piping. Dual plate design preferred for superior water hammer protection.

Power Spec: WCB or SS316 body / Viton or PTFE seat / API 594
Types: Single plate and dual plate available
Sizes: DN100 to DN400

Get Power Plant Check Valve Quote

Swimming Pool & Pharma

SS304 Wafer Check Valve for Pool & Pharma

For: Swimming Pool Contractors / Pharma Engineers

Swimming pool and pharma water systems require non-contaminating, corrosion-resistant SS304 wafer check valves with EPDM or PTFE seats.

Pool Spec: SS304 body / EPDM seat / chlorine-resistant
Pharma Spec: SS304/SS316 body / EPDM or PTFE seat / CIP compatible
Sizes: DN25 to DN100

Get SS304 Check Valve Quote

Original Manufacturer from Ahmedabad, Gujarat — Supplying PAN India

Regardless of your industry, KELOR supplies wafer check valves direct from our Ahmedabad manufacturing facility to every state in India — and for export via FOB Mundra / Nhava Sheva. Factory-direct pricing, consistent quality, full documentation, and reliable supply for both small and bulk orders.

📱 WhatsApp us your specification: Size, material grade, seat material, quantity and delivery location. We reply within 2 hours.

Industries and Applications

🔥 Fire Fighting

Pump discharge, sprinkler, hydrant, deluge. CI body with EPDM seat. See Fire Section →

💧 Water Supply

Municipal WTP, pump stations, distribution mains, overhead tanks. CI or SS304 NRV.

❄️ HVAC Systems

Chilled water, AHU connections, cooling tower loops. CI or SS304 wafer NRV.

⚗️ Chemical & Pharma

Process pipelines, dosing lines. SS316 with Viton or PTFE seat.

⛽️ Oil & Gas

Refinery process lines, pipelines. WCB or SS316 with Viton seat. API 594.

⚡ Power Plants

Cooling water, utility lines. Bulk project supply.

🏗 EPC & Infrastructure

Government tenders, industrial estates, SEZ development. Multi-size orders.

🏢 Commercial Buildings

High-rise services, hotels, hospitals. HVAC and fire protection NRV.

🏊 Swimming Pools

Pool pump, filtration, chemical dosing. SS304 with EPDM seat.

💊 Pharma Water Systems

PW and WFI distribution. SS304/SS316 with EPDM or PTFE. CIP compatible.

💧 Jal Jeevan Mission

Rural water supply pump stations, rising mains. CI body, IS 776 / IS 5312-1.

🛠️ Data Centre Cooling

Redundant chilled water NRV for 24/7 cooling. CI or SS304.

Key Technical Advantages of KELOR Wafer Check Valves

API 594 design with IS 776 / IS 5312-1 compliance — conforms to both international and Indian standards required by fire consultants, EPC contractors and insurance-mandated specifications
Compact wafer design — up to 60% shorter face-to-face dimension vs conventional swing check valves; ideal for tight installation spaces between flanges in pump rooms and pipe racks
Spring-assisted fast closure — disc closes before flow reverses, eliminating water hammer and reverse shock in pump discharge lines
Low cracking pressure (5–15 mbar) — minimal energy loss during pump operation
Elastomer seat seal — NBR/EPDM/Viton/PTFE seat options ensure bubble-tight shutoff across all common industrial fluids
Lightweight construction — significantly lighter than flanged check valves; reduces pipe support and installation cost
Universal flange compatibility — fits ANSI 150, DIN PN10/PN16, IS flange standards without modification
9 body material options — CI, SG Iron, WCB/MS, SS304, SS316, CF8, CF8M, Bronze
Both horizontal and vertical installation — install in any orientation (vertical must be upward flow)
Factory-tested per API 598 — every wafer NRV hydrostatically tested before dispatch with test certificate

Why EPC Contractors Choose KELOR

🏭

Manufacturing Since 1985

Part of Krishna Industries family with 40+ years of domain expertise. KELOR brand operations since 2017. Factory-direct pricing.

📦

Bulk Manufacturing Capacity

Reliable production for large EPC projects and repeat MRO orders. Common sizes in ready stock at Ahmedabad warehouse.

📄

GST Compliant Billing

100% GST invoice with E-Way bill for every shipment. GST No: 24AKLPP6499B1ZT.

🚚

PAN India Dispatch

Dispatching from Ahmedabad to Mumbai, Delhi, Chennai, Bangalore, Hyderabad, Kolkata and all states — 7–15 working days.

🔬

Test Certificates

MTC, hydro test reports, dimension drawings and third-party inspection (TPI) support on request.

🏷️

OEM / Private Label

Supply under your brand name for traders and distributors. Custom marking and packaging. MOQ applies.

📋 Commercial Terms — Quick Reference

Payment Terms100% advance or 50% advance + 50% before dispatch. EPC/project orders: negotiable credit terms.

Warranty12 months from dispatch against manufacturing defects. EPC projects: 18–24 months negotiable.

MOQStandard: 20 pcs per size and grade. Single-piece accommodated for genuine project needs.

ExportFOB Mundra / Nhava Sheva. CIF / DAP terms on request. IEC code: AKLPP6499B.

DeliveryReady stock: 2–3 working days. Standard: 7–10 working days. Bulk (500+): 15–20 working days.

DocumentationGST invoice + E-Way bill. MTC, hydro test report, dimension drawings, TPI on request.

Sample1–2 pieces at sample cost for approval. Cost adjusted against bulk order.

PackingStandard export-worthy packing. Custom packing for OEM/private label orders.

🔗 Related Products from KELOR

Fire Fighting Check Valves Industrial Fasteners SS Washers Stud Bolts O-Rings Butterfly Valves Flanges Wedge Lock Washers

Need Factory Price for Wafer Check Valves?

Share your size, material grade, quantity and delivery location. We reply within 2 hours on WhatsApp. Bulk orders (100+ pcs) get special manufacturer pricing.

📱 WhatsApp for Price ✉ Email Inquiry

Supply Coverage — PAN India and Export

KELOR wafer check valves (NRV) are dispatched from our Ahmedabad warehouse to all major industrial cities: Mumbai, Pune, Nashik, Nagpur (Maharashtra) · Chennai, Coimbatore, Bengaluru, Hyderabad (South India) · Delhi, Noida, Gurugram, Faridabad (NCR) · Kolkata (East India) · Jaipur, Indore, Lucknow, Kanpur, Ludhiana (Central and North India) · Surat, Vadodara, Rajkot (Gujarat) and all other states.

Export supply available: FOB Mundra / Nhava Sheva. CIF / DAP terms on request. IEC code: AKLPP6499B. in India | CI, SS304, SS316 Wafer Check valve (NRV) Manufacturer in Wafer Check valve (NRV) Manufacturer in Wafer Check valve (NRV) Manufacturer in

Frequently Asked Questions — Wafer Check Valve (NRV)

What sizes are available for wafer check valves?

We manufacture wafer check valves (NRV) from 1″ (DN25) to 24″ (DN600) in CI, SG Iron, WCB/MS, SS304, SS316, CF8, CF8M and Bronze. Common sizes 2″, 3″, 4″, 6″ in CI are in ready stock. Larger sizes available on 7–15 working days.

What materials are wafer check valves made of?

Body materials: CI, SG Iron, WCB, MS, SS304, SS316, CF8, CF8M, Bronze. Seat options: NBR, EPDM, Viton FKM, PTFE. Spring: SS316 on all variants.

What is the difference between CI and SS wafer check valves?

CI is for water, air and non-corrosive fluids — most cost-effective from ₹700/pc DN50. SS304/SS316 for corrosive media, food processing, chemical service, offshore. SS316 offers superior chloride resistance.

What is the minimum order quantity?

Standard MOQ: 20 pieces per size and grade. Single-piece accommodated for genuine project needs. Bulk orders (100+ pcs) qualify for 15–30% discount.

Do you supply wafer check valves for fire fighting?

Yes — this is our highest-volume application. CI wafer check valves with EPDM seats conforming to API 594, IS 776 and IS 5312-1. Ready stock in DN50, DN80, DN100, DN150.

What is the delivery time from Ahmedabad?

Ready stock: 2–3 working days. Standard: 7–10 working days. Bulk (500+ pcs): 15–20 working days. PAN India dispatch via reputed transporters.

Do you provide GST invoice and MTC?

Yes. GST invoice with E-Way bill for every shipment (GSTIN: 24AKLPP6499B1ZT). MTC per EN 10204 Type 3.1, API 598 hydro test certificates, dimension drawings, and TPI coordination available.

Can you supply with private labelling?

Yes. KELOR offers OEM/private label supply with your brand marking, custom packaging and documentation.

What is the cracking pressure?

DN40: ~15 mbar, DN50-DN80: ~10 mbar, DN100-DN150: ~8 mbar, DN200-DN600: ~5 mbar (EPDM seat, SS316 spring).

What is the price of CI wafer check valve?

CI starts from ₹700/pc for DN50 (2 inch). DN80: ₹900–1,500. DN100: ₹1,200–2,000. DN150: ₹1,800–3,000. Bulk orders (100+ pcs) get 15–30% discount.

Which seat material should I choose?

EPDM for water, fire, HVAC (most common). NBR for oil and fuel. Viton for oil/gas/chemicals. PTFE for aggressive chemicals. See Seat Material Guide →

Do you supply for Jal Jeevan Mission projects?

Yes. CI wafer check valves for JJM/AMRUT projects conforming to IS 776 and IS 5312-1. MTC, API 598 test certs, TPI coordination. Bulk supply 500–10,000+ pcs. See JJM Section →

Do you hold UL or FM certification?

Not currently. All valves are factory-tested per API 598 and conform to API 594, IS 776, IS 5312-1. For UL/FM requirements, we can guide on alternative sourcing.