Email: [email protected]
Phone: +91 93135 43530
Address: 133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
MS Body Wafer Check Valve (NRV) — Manufacturer & Supplier | KELOR, Ahmedabad
Mild Steel body · Single Plate Wafer Type NRV · SS Disc · EPDM / NBR / PTFE Seat · Size 1″ to 24″ (DN25–DN600) · API 594 · PN10 / PN16 / ANSI 150 · Starting ₹130/Unit
Ready Stock: 2″, 3″, 4″, 6″ CI & MS · MOQ 20 Nos · GST Invoice (GSTIN: 24AKLPP6499B1ZT) · Pan India Dispatch · 2-Hour Quote on WhatsApp
Also Available In — Other Body Materials
The MS Body Wafer Check Valve (also known as a Mild Steel NRV, MS Non-Return Valve, or MS wafer type check valve) is a compact single-plate backflow prevention valve designed to be clamped between two pipe flanges. The mild steel (WCB carbon steel) body provides higher pressure and temperature rating than cast iron, making it the preferred choice for steam lines, oil and gas utilities, compressed air systems, and higher-temperature water systems where CI would be inadequate.
Krishna Industries (KELOR Valves), Ahmedabad, manufactures and supplies MS body wafer check valves from 1″ to 24″ — ready stock in common sizes — with GST invoice, MTC on request, and pan India dispatch.
MS Wafer Check Valve Price List — Indicative (Ex-Ahmedabad)
Prices are indicative for standard MS body + SS disc + EPDM seat configuration at PN16 rating. Final price depends on quantity, disc/seat material, and delivery. WhatsApp for confirmed bulk pricing within 2 hours.
| Size (NB) | DN Size | Indicative Price (₹/Unit) | MOQ | Stock Status |
|---|---|---|---|---|
| 1″ (25mm) | DN25 | ₹180 – ₹220 | 20 Nos | ⏱ 7–10 Days |
| 1½” (40mm) | DN40 | ₹220– ₹280 | 20 Nos | ⏱ 7–10 Days |
| 2″ (50mm) | DN50 | ₹280 – ₹380 | 20 Nos | ⏱ 7–10 Days |
| 2½” (65mm) | DN65 | ₹380 – ₹520 | 20 Nos | ⏱ 7–10 Days |
| 3″ (80mm) | DN80 | ₹550 – ₹750 | 20 Nos | ⏱ 7–10 Days |
| 4″ (100mm) | DN100 | ₹950 – ₹1,400 | 20 Nos | ⏱ 7–10 Days |
| 6″ (150mm) | DN150 | ₹1,800 – ₹2,600 | 20 Nos | ⏱ 7–10 Days |
| 8″ (200mm) | DN200 | ₹3,200 – ₹4,500 | 10 Nos | ⏱ 7–10 Days |
| 10″ (250mm) | DN250 | ₹4,500 – ₹5,000 | 10 Nos | ⏱ 7–10 Days |
| 12″ (300mm) | DN300 | ₹5,000 – ₹7,000 | 5 Nos | ⏱ 10–15 Days |
| 14″–24″ | DN350–DN600 | On Request | 5 Nos | ⏱ 15–20 Days |
⚠️ Prices are indicative only. Final price depends on seat material (EPDM / NBR / PTFE / Viton), disc material (MS / SS304 / SS316), flange standard (PN10 / PN16 / ANSI 150), quantity, and delivery location. WhatsApp +91 93135 43530 with your size, quantity, and seat/disc requirement for a confirmed quotation within 2 hours.
Technical Specifications — MS Body Wafer Check Valve
| Parameter | Specification |
|---|---|
| Valve Type | Single Plate Wafer Check Valve (Non-Return Valve / NRV) |
| Body Material | Mild Steel (MS) / WCB Carbon Steel |
| Disc Material | MS (standard) · SS304 (CF8) · SS316 (CF8M) on request |
| Seat / Seal Material | EPDM (standard, -10°C to +120°C) · Nitrile NBR · PTFE (up to +200°C) · Viton (on request) |
| Shaft / Spring | SS304 spring-loaded · SS316 on request |
| Design Standard | API 594 / BS EN 16668 |
| 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 — clamped between flanges (ANSI / DIN / IS flange compatible) |
| Face-to-Face | Short pattern (API 594 Table 1) — significantly shorter than flanged check valves |
| Operation | Automatic — spring-assisted fast closure, no handwheel or actuator required |
| Flow Direction | Unidirectional — flow arrow marked on valve body |
| Installation | Horizontal pipelines (preferred) · Vertical pipelines with upward flow |
| Temperature Range | -10°C to +120°C (EPDM seat) · Up to +200°C (PTFE seat) |
| Surface Finish | Shot-blasted + primer paint (standard) · Epoxy-coated on request |
| Starting Price | ₹130/unit (1″ MS body, EPDM seat, ex-Ahmedabad) |
| HSN Code | 84818000 |
| GST Rate | 18% |
MS vs CI Wafer Check Valve — When to Specify Mild Steel
Most buyers default to Cast Iron (CI) wafer check valves for cost reasons — but MS (WCB carbon steel) is the correct specification in several common situations. Use this guide to choose correctly.
| Criteria | MS (Mild Steel / WCB) | CI (Cast Iron) |
|---|---|---|
| Body Material | Carbon steel (WCB / WC6) — tough, weldable | Grey cast iron / SG iron — brittle under impact |
| Pressure Rating | PN16, ANSI 150, ANSI 300 — higher pressure capable | PN10 / PN16 maximum — not suitable for ANSI 300 |
| Temperature | Up to +300°C (WCB) with correct seat | Up to +200°C maximum — avoid steam above 200°C |
| Impact Resistance | ✅ High — handles water hammer, surge, hydraulic shock | ⚠️ Low — cast iron shatters under severe water hammer |
| Applications | Steam lines, oil & gas, compressed air, high-temp water, EPC industrial | Cold water supply, HVAC, fire fighting, general utilities below 200°C |
| Cost | 15–25% higher than CI equivalent | Lower cost — preferred for non-critical water/HVAC duty |
| Corrosion | Both require coating for corrosive media — SS disc + EPDM seat improves internal resistance | Same — CI also corrodes internally in aggressive water |
| Weldability | ✅ Weldable — can be welded into pipework for permanent installation | ❌ Not weldable |
ℹ️ Rule of thumb: Specify MS wafer check valve whenever: (1) operating temperature exceeds 120°C, (2) the system is steam, oil, compressed air, or gas, (3) water hammer risk is high (fast pump starts/stops), or (4) the valve is on a high-pressure line above PN16. Specify CI wafer check valve for cold water, HVAC, and fire fighting duty up to PN16 where cost is the primary driver.
Seat Material Selection — EPDM vs NBR vs PTFE
| Seat Material | Temperature Range | ✅ Specify For | ❌ Avoid |
|---|---|---|---|
| EPDM (Standard) | -10°C to +120°C | Water supply, HVAC chilled water, fire fighting, potable water, mild chemicals, dilute acids/alkalis | Petroleum products, oils, hydrocarbons — EPDM swells in oil |
| NBR (Nitrile) | -20°C to +100°C | Oil, petroleum, diesel, natural gas, LPG, compressed air with oil carry-over | Hot water above 100°C, steam, ozone/UV exposure |
| PTFE | -50°C to +200°C | Chemical service, concentrated acids/alkalis, steam, pharmaceuticals, high-purity water, food GMP | Abrasive slurries — PTFE is soft and can be damaged by particles |
| Viton (FKM) | -20°C to +200°C | High-temperature oil/gas, chlorinated solvents, aggressive chemicals, offshore service | Ketones, esters, amine-based fluids — check chemical compatibility |
Applications — Where MS Wafer Check Valves Are Used
🔥 Steam Systems
MS body with PTFE seat for condensate return lines, steam distribution, and boiler room pipework where CI is inadequate above 120°C.
⛽ Oil & Gas
MS/WCB body with NBR seat for crude oil transfer, refined petroleum product lines, and compressed gas pipework.
💨 Compressed Air
MS body for compressor discharge lines, air receiver outlets, and pneumatic system distribution — prevents back-surge when compressor stops.
💧 Water Treatment
MS body with EPDM seat for pump discharge lines, filter outlets, and high-pressure water treatment plant piping above PN10.
🏗️ EPC Projects
Bulk project supply for refinery, petrochemical, power plant, and infrastructure EPC contractors requiring ANSI 150 or PN16 carbon steel check valves with MTC.
🏭 Sugar & Distillery
Process water, juice, and utility lines in sugar plants and ethanol distilleries — MS body handles higher process temperatures than CI.
⚡ Power Plants
Cooling water pump discharge, service water systems, and auxiliary utility piping in thermal and hydro power plants.
🔧 Pump Protection
Installed on pump discharge to prevent reverse rotation and backflow damage when pump stops suddenly or power fails.
How an MS Wafer Check Valve Works
The MS body wafer check valve operates entirely automatically — no actuator, handwheel, or external signal required:
- Forward flow: Upstream pressure exceeds downstream pressure → spring-loaded disc opens → fluid flows through
- Flow stop / reversal: Upstream pressure drops below downstream → spring closes disc before flow reverses → backflow is prevented
- Water hammer prevention: Spring-assisted fast closure means the disc closes before a significant reverse flow velocity builds up — this eliminates the pressure spike (water hammer) that causes pipeline damage and noise in swing check valves
- Installation: Clamped between two pipe flanges using standard bolts — no special bolting required. Flow direction arrow on valve body must point in the direction of desired forward flow
Get MS Wafer Check Valve Price — 2-Hour Response
Share: Size (1″–24″) · Quantity · Seat Material (EPDM/NBR/PTFE) · Disc Material (MS/SS304/SS316) · Delivery Location
📲 WhatsApp for Price 📧 Email EnquiryWhy Contractors & Traders Choose KELOR for MS Wafer Check Valves
🏭
Direct Manufacturer
Krishna Industries manufactures wafer check valves directly — no middleman. Factory pricing, fast production, and full quality control in-house.
📦
Ready Stock — Fast Dispatch
2″, 3″, 4″, and 6″ MS body wafer check valves in ready stock. Dispatch within 2–3 working days of order confirmation and advance payment.
📄
Full Documentation
GST invoice + E-Way bill on every shipment. MTC, hydrostatic test certificate, and third-party inspection available on request for EPC orders.
🚚
Pan India Dispatch
Dispatching from Ahmedabad to Mumbai, Pune, Chennai, Bengaluru, Hyderabad, Delhi, Kolkata, and all other states. Export (FOB Mundra) available.
🏷️
OEM / Private Label
Supply under your brand name for traders and distributors. Custom packaging and stenciling available. MOQ applies — WhatsApp to discuss.
⚡
2-Hour Quote
WhatsApp size, quantity, and seat material — confirmed price and delivery timeline within 2 business hours. No lengthy RFQ process for standard items.
Pan India Supply — MS Wafer Check Valve
Krishna Industries dispatches MS body wafer check valves from Ahmedabad to all major cities and states: Mumbai, Pune, Nashik, Nagpur (Maharashtra) · Chennai, Coimbatore, Bengaluru, Hyderabad, Visakhapatnam (South India) · Delhi, Noida, Gurugram, Faridabad, Ludhiana (North India) · Kolkata, Bhubaneswar (East India) · Jaipur, Indore, Bhopal, Lucknow, Kanpur (Central India) · Surat, Vadodara, Rajkot, Vapi (Gujarat) and all other industrial cities across India.
Frequently Asked Questions — MS Wafer Check Valve
What is an MS body wafer check valve and how is it different from CI?
An MS body wafer check valve uses a Mild Steel (WCB carbon steel) body instead of Cast Iron. The key differences: MS handles higher pressure (PN16 and ANSI 150/300 ratings), higher temperatures (up to +300°C with PTFE seat vs +200°C for CI), and is significantly more resistant to hydraulic shock and water hammer — cast iron bodies can crack under water hammer while MS deforms without fracturing. MS is the correct specification for steam lines, oil and gas, compressed air, and any system where CI is inadequate on pressure or temperature. For cold water, HVAC, and fire fighting duty within PN16 limits, CI is preferred as it is 15–25% cheaper.
What is the price of an MS wafer check valve in India?
MS body wafer check valve prices ex-Ahmedabad start at approximately ₹130 per unit for 1″ (DN25) size with EPDM seat and MS disc. Common sizes: 2″ is approximately ₹200–₹280, 4″ is approximately ₹550–₹750, 6″ is approximately ₹950–₹1,400 — all depending on disc material (MS vs SS304), seat material (EPDM vs NBR vs PTFE), and order quantity. Bulk orders of 100+ pieces qualify for special pricing. WhatsApp +91 93135 43530 with your size, disc/seat requirement, and quantity for a confirmed quotation within 2 hours.
Which seat material should I choose — EPDM, NBR, or PTFE?
EPDM (standard) is suitable for water, HVAC, fire fighting, and mild chemical service up to 120°C — it is the most common and cost-effective choice. NBR (Nitrile) is required for oil, petroleum products, compressed air with oil carry-over, natural gas, LPG, and diesel lines — EPDM swells and fails in hydrocarbon service. PTFE is required for steam (above 120°C), concentrated chemicals, pharmaceutical, and food GMP service — it handles up to 200°C and is chemically inert to almost all media. Viton (FKM) is the premium option for high-temperature oil/gas, chlorinated solvents, and aggressive offshore chemical service up to 200°C. If unsure, share your process media, temperature, and pressure with us and we will confirm the correct seat.
What sizes are available in ready stock?
Ready stock is maintained for 1″, 1½”, 2″, 2½”, 3″, 4″, and 6″ MS body wafer check valves with EPDM seat (standard). These sizes dispatch within 2–3 working days of confirmed order and advance payment. Sizes 8″ to 24″ are available on 7–20 working days lead time depending on size and quantity. For urgent project requirements, WhatsApp us to confirm current stock before placing the order.
Can MS wafer check valves be used for steam service?
Yes — MS body (WCB) wafer check valves with PTFE seats are suitable for steam service up to approximately 200°C and PN16 (or ANSI 150) pressure rating. For steam above 200°C or high-pressure steam above ANSI 150, specify WC6 (Cr-Mo alloy steel) body with PTFE seat — available on request. Do not use EPDM-seated valves for steam service — EPDM deteriorates rapidly in steam above 120°C. Cast iron wafer check valves should also not be used for steam above 120°C due to CI’s brittleness in thermal shock conditions. When specifying for steam, always include operating pressure, saturated or superheated steam, and temperature in your inquiry.
What standard do your MS wafer check valves conform to?
KELOR MS body wafer check valves are designed and manufactured to API 594 (wafer check valve design standard) and tested to API 598 (valve testing standard). Face-to-face dimensions conform to API 594 short-pattern dimensions. The valve is compatible with ANSI B16.5, DIN, and IS flange drilling patterns — it can be installed between any standard metric or imperial flanges without modification. Material test certificates (MTC) for valve body, disc, and seat, hydrostatic test certificates, and dimensional inspection reports are available on request for project and tender orders.
What is the MOQ and payment terms?
Standard MOQ is 20 pieces per size and configuration. For urgent single-piece project requirements, contact us directly — we accommodate genuine project needs on a case-by-case basis. Bulk orders of 100+ pieces qualify for special pricing. Payment terms: 100% advance for standard orders. For established trading and EPC clients with repeat orders, credit terms are available on discussion. GST invoice with E-Way bill provided on every shipment.
Do you supply wafer check valves for fire fighting systems?
Yes — both CI and MS body wafer check valves with EPDM seats are widely used for fire fighting pump discharge lines, hydrant mains, and sprinkler networks. CI is the standard specification for most fire fighting duty within PN16 limits. MS is preferred for higher-pressure fire systems above PN16 or where hydraulic surge risk is elevated. UL/FM listed options are available on request for projects requiring third-party certified fire valves. Confirm the required listing at the time of inquiry.