Cast Iron Single Plate Wafer Type Check Valve

Cast Iron Single Plate Wafer Check Valve (NRV) Supplier India — PN10/PN16 | KELOR

Cast Iron Single Plate Wafer Type Check Valve (NRV) Supplier in India — PN10/PN16 | KELOR

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Cast Iron Single Plate Wafer Type Check Valves (Non-Return Valves / NRV) — spring-loaded single disc design — PN10 / PN16 pressure rating — EPDM seat (standard) / NBR / Viton / metal seat on request — 2″ to 12″ (DN50 to DN300) — CI body (IS 210 FG200) — CI or SS disc — conforming to IS 13094 and API 594 — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

Mill Test Report 3.1 can be provided on request from verified vendors. API 598 test certificates, hydro test reports and BIS/ISI marked products arranged on request from BIS-certified vendors. OEM logo and packaging available on bulk orders from verified vendor partners.

CI Single Plate Wafer Check Valve NRV non-return valve supplier India KELOR Ahmedabad Cast Iron Wafer NRV Valve single disc check valve KELOR Single Disc Wafer Check Valve CI body EPDM seat supplier India
⚠️ Note: Actual product appearance may vary by size, seat material, and vendor batch. Contact KELOR for specific product photos matching your requirement.
💰 CI Single Plate Wafer Check Valve starting from ₹130/piece (DN50 EPDM Seat) — Bulk discount on 100+ pcs — Ex-Factory Ahmedabad pricing

⚡ Quick Reference

SupplierKrishna Industries (KELOR) — Ahmedabad
Body MaterialCast Iron (IS 210 FG200)
Seat (Standard)EPDM / NBR
Pressure RatingPN10 / PN16
Size Range2″ to 12″ (DN50–DN300)
End ConnectionWafer Between Flanges
MOQ10 Pieces
HSN Code84818090

📧 Get Fast Quotation — Bulk & Project Pricing

WhatsApp size list, quantity, and seat material preference — receive competitive pricing within 2 hours from our sales engineers.

💬 Get Price on WhatsApp 📩 Get Price by Email

Technical Overview — Cast Iron Single Plate Wafer Check Valve

The Cast Iron Single Plate Wafer Type Check Valve is a compact non-return valve (NRV) designed to automatically prevent reverse flow in pipelines. The spring-loaded single disc design ensures quick response, reduced pressure loss, and long service life in continuous industrial operation. It is installed between flanges without additional support — making it the most economical and space-efficient NRV for water supply, HVAC, fire fighting, and general industrial piping systems across India.

Krishna Industries (KELOR) supplies CI wafer check valves from verified and quality-assured vendor partners who conform to IS 13094 and API 594 design requirements. Every valve is factory-tested per API 598 (shell test and seat leakage test) before dispatch. With supply capacity to meet project orders of 100 to 1000+ pieces, KELOR serves EPC contractors, MEP consultants, fire protection engineers, and water treatment plant operators across India with competitive ex-factory Ahmedabad pricing.

How Does a Single Plate Wafer Check Valve Work?

1

Forward Flow Opens

Upstream pressure overcomes the spring force and disc weight. The single disc swings open, allowing fluid to pass through the valve body with minimal pressure drop and energy-efficient pump operation.

2

Steady Flow

Disc stays fully open during normal flow conditions. The streamlined single-plate design ensures the lowest possible pressure drop compared to swing check or dual plate alternatives.

3

Flow Stops / Reverses

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. This prevents water hammer and pump damage.

4

Reverse Flow Blocked

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

Key B2B Benefits

The CI single plate wafer check valve delivers significant operational and commercial advantages for procurement teams, EPC contractors, and project engineers. Understanding these benefits helps justify the specification and build the business case for purchase orders:

  • Prevents costly backflow damage — protects pumps, pipelines, and equipment from reverse flow and water hammer damage that can cause costly plant shutdowns
  • Compact wafer design — installed between two flanges without its own flanged ends, saving space in tight plant galleries and reducing installation cost
  • Low cracking pressure — spring-loaded single disc opens at low differential pressure, minimising energy loss and reducing pump head requirement
  • Suitable for water, air, oil, and utility services — the CI body with EPDM/NBR seat covers the majority of non-corrosive industrial applications
  • High durability in continuous operation — CI body (IS 210 FG200) provides long service life under continuous industrial duty with minimal maintenance
  • Most economical NRV type — single plate wafer is 40–60% lower cost than swing check or dual plate check valves for equivalent service conditions

Material of Construction

PartMaterialStandard
BodyCast IronIS 210 FG200 / ASTM A126 Class B
Disc / PlateCast Iron (standard) / SS304 or SS316 (optional)IS 210 / ASTM A182 (SS)
SeatEPDM (standard) / NBR / Viton (FKM) / PTFE / Metal seatPer application specification
SpringSS316 (standard)ASTM A313
Hinge PinSS316ASTM A276
Body GasketEPDM / NBRPer seat material selection

Technical Specifications

ParameterSpecification
Design TypeSingle Plate Wafer Type
Body MaterialCast Iron (IS 210 FG200)
Disc MaterialCast Iron / SS304 / SS316 (optional)
Seat MaterialEPDM (standard) / NBR / Viton / PTFE / Metal
Spring MaterialSS316
Pressure RatingPN10 / PN16
End ConnectionWafer Between Flanges
Size Range2″ (DN50) to 12″ (DN300)
MediaWater, Air, Oil, Utilities
Temperature Range-10°C to +120°C (EPDM) / -10°C to +80°C (NBR)
Design StandardIS 13094 / API 594
Testing StandardAPI 598 — shell test and seat leakage test
MOQ10 Pieces
HSN Code84818090

📖 Applicable Standards

CI wafer check valves supplied by Krishna Industries (KELOR) conform to the following Indian and international standards:

  • API 594 — Wafer and wafer-lug check valves (design requirements)
  • API 598 — Valve inspection and testing (shell test and seat leakage test)
  • IS 13094 — Cast iron wafer type check valves (Indian standard for CI NRV)
  • IS 210 — Grey iron castings (CI body grade FG200)
  • ISO 5208 — Industrial valves — pressure testing of metallic valves

Standard Dimensions

Size (NB)DN (mm)Face to Face (mm)Flange OD 150# (mm)Bolt Circle (mm)
2″504312089
3″8046150115
4″10064175140
6″15076220185
8″20089270230
10″250114325285
12″300114380340
⚠️ Note: Dimensions are reference values per IS 13094 / API 594. Actual vendor dimensions may vary slightly. Contact KELOR for certified vendor-specific dimension drawings. Face-to-face dimensions may differ between PN10 and PN16 constructions for some sizes.
EPDM SeatWater, Fire Fighting, HVAC
NBR SeatOil, General Industrial
Viton Seat (FKM)Chemical, Solvent
Metal SeatHigh Temperature Steam

Applications in Indian Industries

💧 Water Supply & Treatment

Installed at pump discharge lines, distribution headers, and overhead tank inlets in municipal water supply, Jal Jeevan Mission projects, and industrial water treatment plants. EPDM seat ensures safe, non-contaminating sealing for potable water. CI body with PN16 rating handles the pressure requirements of most urban and rural water distribution systems.

🔥 Fire Fighting Systems

Standard NRV for fire pump discharge lines, sprinkler risers, and hydrant ring mains. NBC 2016 mandates NRV at every fire pump discharge — CI wafer check valve with EPDM seat is the industry-standard specification. KELOR supplies with API 598 test certificates for fire NOC inspections and insurance audits.

🏥 HVAC Systems

Installed on chilled water, cooling water, and hot water circuit lines in commercial building HVAC systems. The compact wafer design fits in tight mechanical room spaces. Low cracking pressure reduces pump energy consumption. The most economical NRV for AHU, chiller, and cooling tower connections.

⚙ Industrial Process Plant

General utility isolation for cooling water circuits, compressed air lines, process water distribution, and oil handling systems. CI body provides the durability needed for continuous industrial operation. For corrosive chemical service, specify SS304 or SS316 wafer check valve instead of CI.

Why Choose KELOR for CI Wafer Check Valves?

✅

Quality Verified

API 598 shell test and seat leakage test. Mill Test Report 3.1 can be provided on request from verified vendors. Full material traceability maintained.

🚚

Pan India Dispatch

GST invoice with E-Way bill. Dispatch from Ahmedabad within 5–10 working days. Ready stock available in common sizes (2″, 4″, 6″, 8″).

📧

Fast Quotation

WhatsApp size list and quantity — project pricing within 2 hours. Dedicated support for EPC contractors, MEP consultants, and government tenders.

📋

Full Documentation

API 598 test certificate, hydro test report, MTC (EN 10204 Type 3.1), GST invoice. Third-party inspection (TPI) coordination available.

💰

Competitive Pricing

Starting from ₹130/pc (DN50). Bulk discount on 100+ pieces. Ex-factory Ahmedabad pricing eliminates distributor margins.

🎯

OEM Available

OEM logo and packaging available on bulk orders from verified vendor partners. Industrial transit-safe packing standard.

📈 Pricing & Order Details

Price Range ₹130 – ₹9,000+ / Piece
Price Basis Ex-Factory Ahmedabad
Payment Terms Advance / Proforma Invoice
Delivery Ready Stock / Made to Order
MOQ 10 Pieces
Packing Industrial transit-safe packing
Documentation MTC 3.1, API 598 test certificate
HSN Code 84818090

Frequently Asked Questions

1. What is a single plate wafer check valve?
A single plate wafer check valve is a compact non-return valve (NRV) that uses a spring-loaded single disc to automatically prevent reverse flow in pipelines. It is installed between two flanges (wafer type) without requiring its own flanged ends. When forward flow stops or reverses, the spring forces the disc shut against the seat, preventing backflow. It is the most common NRV specified in water supply, HVAC, and fire fighting systems across India.
2. What is the pressure rating for CI wafer check valves?
Standard CI single plate wafer check valves are rated PN10 (10 bar) or PN16 (16 bar). PN16 is the standard for most Indian water supply and HVAC applications, providing a 16 bar pressure rating at ambient temperature. PN10 is used for lower pressure applications. Always verify the pressure-temperature rating for your specific operating conditions before specifying.
3. What seat materials are available?
EPDM is the standard seat material for water, HVAC, and fire fighting service — temperature range -10°C to +120°C. NBR (Nitrile) is used for oil and general industrial service — -10°C to +80°C. Viton (FKM) is specified for chemical resistance. PTFE is specified for aggressive chemical and food-grade applications. Metal seat is available for high temperature steam service. Contact KELOR to specify the correct seat material for your process fluid.
4. What is the MOQ?
MOQ is 10 pieces. Project orders for water treatment, HVAC, and fire fighting systems typically range 20 to 500+ pieces across sizes. API 598 test certificate, Mill Test Report 3.1 can be provided on request from verified vendors, and GST invoice provided with every order. WhatsApp size list and quantity for project pricing within 2 hours.
5. Can CI wafer check valves be used for fire fighting?
Yes — CI single plate wafer check valves with EPDM seat are the standard NRV for fire fighting systems in India. They are installed at fire pump discharge lines, sprinkler risers, and hydrant ring mains to prevent backflow. The CI body with EPDM seat is NBC 2016 compliant for fire water service. KELOR supplies fire fighting check valves with API 598 test certificates and documentation for fire NOC inspections.
6. What is the difference between PN10 and PN16?
PN10 indicates a pressure rating of 10 bar at ambient temperature, while PN16 indicates 16 bar. PN16 valves have a heavier body wall thickness to withstand higher pressure. For most Indian water supply, HVAC, and fire fighting applications, PN16 is the standard specification as it provides adequate safety margin. PN10 may be specified for low-pressure utility applications where cost optimisation is critical.
7. Can I get test certificates?
Yes — API 598 test certificates (shell test and seat leakage test) can be provided on request from verified vendors. Mill Test Report (MTC) per EN 10204 Type 3.1 can be provided on request. Hydro test reports, material certificates, and third-party inspection (TPI) reports can be arranged for project-specific documentation requirements.
8. What sizes are most commonly ordered?
The most commonly ordered sizes for Indian projects are 2″ (DN50), 4″ (DN100), 6″ (DN150), and 8″ (DN200). These sizes are typically available in ready stock at the Ahmedabad warehouse. Larger sizes 10″ (DN250) and 12″ (DN300) are used for main water supply lines and fire fighting ring mains, and may require 5–10 working days for dispatch.

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Krishna Industries (KELOR) supplies Cast Iron Single Plate Wafer Type Check Valves (NRV) — PN10 / PN16 — EPDM / NBR / Viton / Metal seat — 2″ to 12″ (DN50–DN300) — CI body (IS 210 FG200) — CI or SS disc — IS 13094 / API 594 — API 598 tested — MTC — GST invoice — Pan India dispatch from Ahmedabad.

WhatsApp size list, quantity, and seat material for pricing within 2 hours. Starting from ₹130/piece. OEM logo available on bulk orders.

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