Wafer Check Valve
Wafer Check Valve Manufacturer
MVS Valves offers robust and compact Wafer Check Valves designed to deliver reliable backflow prevention in various process, water, and industrial pipeline systems. The single plate wafer type check valve features a wafer style single disc swing type design that fits between flanges in a space-saving sandwich configuration. Conforming to API 6D and ASME B16.10 face-to-face standards, these valves are perfectly suited for pump discharge duties and applications requiring efficient shut-off performance with minimal pressure loss.
The design incorporates an eccentric-mounted hinge pin and a precision-engineered disc seat that ensures positive sealing of the returning media. Offered in Swing short wafer carbon steel check valve and Swing short wafer stainless steel check valve variants, the Wafer Check Valve provides exceptional durability under varying pressure and flow conditions. For demanding applications, the SS 316 single door wafer check valve offers added resistance to corrosion, while the carbon steel wafer body thin type single plate wafer check valve is ideal for high-strength and budget-friendly installations.
For operations that require enhanced responsiveness, MVS also manufactures Wafer Check Valves with a spring-loaded mechanism on request. This feature allows for quicker closing action and helps prevent water hammer, making them suitable for vertical and horizontal pipeline orientations. Whether it’s the Wafer Swing Check Valve, Stainless Steel Wafer Body Thin Type Single Plate Wafer Check Valve, or Wafer Style Single Disc Short Pattern API 6D Check Valve, each model guarantees reliable flow control in a compact footprint.
The combination of advanced manufacturing, high-grade materials such as carbon steel and stainless steel, and compliance with international standards like ASME, BS, and DIN makes MVS’s Single Disc Wafer Check Valves a trusted solution across critical industries. Their simple yet rugged construction ensures long service life, ease of installation, and consistent sealing performance, making them the go-to choice for efficient non-return flow management.
Specification
| Specification | Details |
|---|---|
| Valve Type | Wafer Style Check Valve (Swing Type) |
| Size Range | Typically 2″ to 42″ (DN 50 – DN 1050) |
| Pressure Class | Class 150# (flanges per ANSI B16.5) |
| Connection | Wafer (sandwich) to suit ANSI/BS/DIN flanges |
| Disc Options | Spring Operated |
| Standards | ASME B16.5, BS EN standards, API 6D compliance |
| Operating Temp | -10 °C to +200 °C (depend on material and seal) |
| Flow Characteristic | Minimal pressure drop, quick response to reverse flow |
Material of Construction
| Body | Ductile Iron, Carbon Steel (WCB) | Stainless Steel (CF8/CF8M), Duplex, Super Duplex |
| Disc | Stainless Steel, Carbon Steel | Rubber/Lined/PTFE-covered, Spring dual-plate SS |
| Seat/Seal | EPDM, NBR, PTFE | Viton (FKM), Graphite, Metal-to-metal seating |
| Spring (if dual-plate) | 304 SS | Inconel X-750, Monel |
Application Industries
Crude Oil & Natural Gas Industry
Chemical & Petrochemical Industry
Water & Wastewater Treatment
Nuclear & Thermal Power Generation
Food & Beverage Industry
Pharmaceutical & Biotechnology
Pulp & Paper Industry
Mining & Mineral Processing
Marine & Shipbuilding
HVAC & Building Services
Automotive & Paint Chemical Manufacturing
Environmental & Bio Gas Renewable Energy
Steel & Metal Processing
Fertilizer Plants, Polymer Production
Cosmetics & Personal Care
Cement & Construction
Chlor-Alkali Industry
Mineral Acids Industry
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Wafer Check Valve
Frequently Asked Questions
Can’t find your duty condition here? Send us the media, size, pressure and temperature and we will specify the valve. Contact us
What is a wafer check valve and how does it work?
A swing-type check valve built into a short wafer body that is clamped between two pipe flanges rather than bolted in as a flanged spool. Forward flow lifts the disc; reverse flow and gravity close it. Removing the flanges from the valve itself makes it dramatically shorter, lighter and cheaper than a conventional swing check of the same bore — which is why it is the general-purpose choice across a very wide size range.
Which body, disc and seat materials are available?
Body in Ductile Iron or Carbon Steel (WCB), with Stainless CF8/CF8M, duplex and super duplex available. Disc in stainless steel or carbon steel, with rubber-lined, PTFE-covered and spring dual-plate stainless options. Seat and seal in EPDM, NBR or PTFE, with Viton (FKM), graphite and metal-to-metal seating available for higher temperature or abrasive duty.
What size, pressure class and standards apply?
Typically 2″ to 42″ (DN 50 – DN 1050) at Class 150# with flanges per ANSI B16.5 — by far the widest size range in our check valve line. Spring-operated disc options are available where faster closure is needed. Tested to API 598. MVS is ISO 9001:2015 certified and test certificates are supplied with each order.
Wafer check or flanged swing check — which do I need?
Choose the wafer design for cost, weight and length in a continuous flanged run, particularly on large bores where a flanged body would be very heavy. Choose the flanged swing check valve where the valve must carry pipe loads, where it will be removed for maintenance without springing the line apart, or where you need a pressure class above 150#, which the flanged design covers to Class 600#.
Are you a manufacturer, and what are your minimum order quantity and customization options?
MVS is a manufacturer — building valves at its own works since 1978, ISO 9001:2015 certified — and exports across several continents. The minimum order quantity is 20 pieces. Spring-assisted discs, PTFE-covered discs, duplex bodies and large diameters are built to order. For corrosive service, see the fully lined PTFE Lined Wafer Check Valve.