Single door check valve
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Single door check valve
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The Engineering Logic of Space-Saving Fluid Control
In modern industrial piping skids, space is often at a premium. While traditional full-body swing check valves are reliable, their bulk and weight can complicate installation in tight manifold configurations. Veyron Valve’s Single Door Wafer Check Valve solves this problem through a minimalistic "Slim-Profile" design. By eliminating the heavy flanged body and opting for a wafer-style sandwich construction, we provide a high-performance backflow preventer that offers a 70% reduction in weight and a 50% reduction in face-to-face dimensions compared to standard DIN/BS swing check valves.
Disc Dynamics: Precision in Motion
The performance of a single door check valve isn't just about blocking flow; it’s about how efficiently it opens and how safely it closes.
- Optimized Flow Path: The disc is designed with a hydrodynamic profile. When the pump is active, the disc swings open into a recessed area of the body, creating an almost unobstructed passage. This ensures that the pressure drop (ΔPΔP) remains exceptionally low, preventing energy waste and protecting pump efficiency.
- Short Stroke Closure: Because the disc has a shorter travel distance (Short Stroke) compared to full-bodied versions, it can respond more rapidly to flow reversal. This quick-closing action is critical in preventing the buildup of back-velocity, which is the primary cause of destructive water hammer in high-rise HVAC and irrigation systems.
- Gravity-Assisted Sealing: Our hinge pin is precision-offset. This ensures that the disc begins to close under its own weight the moment the flow slows down, even before the actual reversal occurs, providing a much smoother transition than spring-heavy alternatives.
Technical & Material Specifications
| Feature | Technical Detail |
|---|---|
| Body Style | Wafer / Sandwich (To fit between EN/ANSI Flanges) |
| Material | Ductile Iron (GGG40/50) or Stainless Steel (CF8M) |
| Seal Type | Integrated EPDM O-ring or Viton (FKM) Seat |
| Design Standard | API 594 / EN 14341 |
| Pressure Rating | PN10, PN16, PN25 (Class 150) |
| Size Range | DN40 to DN600 |
Durability in Demanding Environments
The weak point of many single door valves is the hinge mechanism. Veyron Valve addresses this with a Heavy-Duty Hinge Pin made of high-tensile Stainless Steel 410 or 316. Unlike cheaper versions that use flimsy pins, our pins are designed to withstand the "fluttering" forces caused by turbulent flow. Furthermore, the seating surface is precision-ground. Whether you choose a resilient EPDM seat for zero-leakage water service or a metal-to-metal seat for higher temperatures, the interface ensures a consistent, drip-tight seal over thousands of cycles.
Field Installation Tips
One of the key advantages of Veyron’s single door design is its Versatile Installation Orientation. It can be installed in horizontal lines or vertical pipelines with upward flow. The integral O-ring design on the valve faces eliminates the need for additional flange gaskets, reducing the number of potential leak points and simplifying the workload for field technicians.
| Place of origin | Product name | material | Port size | Working pressure | Application | guarantee period |
| Veyron Valve,Tianjin,China | Single door check valve |
DI-WCB-SS body/DI-SS-WCB disc/EPDM seat/ss420 stem |
DN50-DN600 | low and medium pressure | water,oil ,gas | 18 month |
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Veyron Valve (Tianjin) Co., Ltd.
Tel：+86 13821711216
Wechat/whatsapp：+86 18822206187
E-mail：anna@veyronvalve.com
Address：No.30,Xiaozhan Industrial park,Jinnan District,Tianjin,China
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