Engineered with a simple and robust design featuring a single moving part—the disc. This inherent simplicity reduces potential failure points, ensures dependable backflow prevention, and leads to a long, low-maintenance service life with minimal downtime.
When fully open, the single disc swings completely out of the flow path. This creates a full, unobstructed port that minimizes pressure drop (head loss) across the valve, improving overall system efficiency and reducing energy consumption from pumps.
Design and Manufacture: API 609, ASME B16.34, ASME Section VIII
Side Flange Standards: ASME / ANSI: Class 125LB & 150LB; EN / DIN: PN6, PN10, PN16; BS / AS: BS 10 Table D/E, AS 2129 Table D/E; JIS: 5K, 10K (JIS B2220); GB / HG/T / GOST
Face-to-Face Dimension: API 609, ISO 5752, EN 558-1, ASME B16.10, MSS SP-68
Testing & Inspection Standards:: API 598; EN 12266-1; ISO 5208; BS 6755-1
Certifications & Conformity: ISO 9001:2015; CE Marking (PED); SIL 3; EAC; BV
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
| Type of Connection | Wafer |
| Size |
DN32~DN1200 (1 1/4~48in) |
| Pressure |
0bar~18bar (0mpa~1.8mpa) |
| Testing Pressure |
Shell: 1.5 x Rated Pressure; Seat: 1.1 x Rated Pressure (acc. to API 598) |
| Medium | Water/Oil/Air |
| Medium Temperature | -25~180℃ |
Material of the Valve |
|
|---|---|
| Body |
Carbon Steel (WCB, WCC) Low-Temp Carbon Steel (LCB, LCC, LC1) |
| Disc |
Cast Iron: DI, CI Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), 1.4529 (926) Aluminum Bronze: C95400, C95800 Nickel Alloy: CW6MC (Hastelloy C-276 eq.) |
| Stem |
Carbon Steel: 45# Stainless Steel: SS410, SS416, SS420; SS304, SS316, SS304L, SS316L; 17-4PH (SS630); Duplex 2205, Super Duplex 2507, 1.4529 Nickel Alloy: Monel K500, Hastelloy C-276 |
| Seat | Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ |
| Coating | Epoxy Resin 200um ~250um |
The Wafer Swing Check Valve is celebrated for its compact, lightweight design and reliable backflow prevention. Its versatility makes it a preferred choice across numerous sectors. Below are nine key industries where our valves deliver exceptional performance, though their application extends far beyond this list.

In heating, ventilation, and air conditioning systems, space is a premium. The compact, short face-to-face dimension of the Wafer Swing Check Valve makes it an ideal solution for preventing backflow in chiller and boiler systems, ensuring efficient operation without requiring extensive installation space.

Essential for municipal and industrial water systems, our Wafer Swing Check Valve reliably protects pumps and pipelines from damaging water hammer and reverse flow. Its simple, robust design ensures long service life and minimal maintenance in demanding treatment plant applications.

With material options like Aluminum Bronze and Duplex Stainless Steel, the Wafer Swing Check Valve offers excellent corrosion resistance in saltwater environments. Its lightweight, wafer-style body is perfect for ballast, bilge, and cooling water systems on ships, where weight and space are critical concerns.

Safety and process integrity are paramount in the chemical industry. The Wafer Swing Check Valve, available with corrosion-resistant alloys like Hastelloy and various stainless steels, prevents the backflow of aggressive media, safeguarding against cross-contamination and equipment damage.

In pulp and paper mills, a dependable valve is key to managing process water, white water, and chemical lines. The full-port design of the Wafer Swing Check Valve minimizes pressure drop and clogging, ensuring continuous and efficient fluid control throughout the production cycle.

Engineered for durability, the Wafer Swing Check Valve is a workhorse in mining operations. It effectively prevents the backflow of water and light slurries in dewatering and processing lines, with a resilient seat design that provides a tight seal even in challenging conditions.

In critical fire sprinkler and standpipe systems, maintaining line pressure is non-negotiable. The Wafer Swing Check Valve provides a vital safety function by preventing water from draining back to the source, ensuring that water is immediately available when fire suppression is activated.

Protecting water sources from contamination is crucial in agriculture. Our Wafer Swing Check Valve is installed at pump outlets to prevent back-siphonage of fertilizers and chemicals into wells or municipal water supplies, ensuring both pump protection and environmental safety.

From factory utility lines to compressed air systems, the Wafer Swing Check Valve is a versatile and economical choice. Its simple installation between flanges and reliable performance make it a go-to solution for preventing reverse flow in a wide array of general industrial processes.
Our competitive edge lies in our state-of-the-art manufacturing facility. We utilize high-precision CNC machining centers to ensure every Wafer Swing Check Valve meets exact design specifications. This commitment to precision engineering guarantees superior quality, flawless performance, and extended service life for all our products.









Quality is the cornerstone of our brand. Our products and processes are independently audited and certified to meet the highest international standards, ensuring that you receive a valve you can trust.



Ready to configure for your project?
Yes. The Wafer Swing Check Valve is highly versatile. It can be installed in horizontal pipelines. For vertical installation, it must be oriented with the flow direction pointing upwards. This ensures that gravity assists the disc in closing, providing a quick and effective seal against backflow.
The single disc design closes based on gravity and back-pressure. While inherently simple and reliable, in high-pressure or rapid-flow-reversal systems, water hammer can be a concern. For such applications, we can provide solutions like a dashpot or a counterweight lever to control the closing speed and significantly mitigate water hammer effects.
Our Wafer Swing Check Valves with resilient seats (like EPDM, NBR, FKM) are engineered for bubble-tight shut-off. Each valve is factory tested according to API 598 standards to ensure zero visible leakage, making them a highly reliable choice for critical applications where backflow prevention must be absolute.
Yes, it performs well. The cracking pressure (the minimum upstream pressure required to open the valve) is very low due to the single disc's design and its pivot point. This allows the valve to open fully even with minimal flow, ensuring it doesn't impede low-pressure systems while still providing effective backflow prevention.
Maintenance is exceptionally simple. The design has minimal moving parts—primarily the disc and hinge pin. If the resilient seat wears over time, it can be easily replaced in the field, extending the valve's service life at a low cost. This makes it a very economical and low-maintenance choice for long-term use.