Wafer Type Single Disc Swing Check Valve
Model H74W-40P | DN200 | PN40 | CF8 Body & Disc
WEISSMILLER Wafer Type Single Disc Swing Check Valve is designed to prevent reverse flow in industrial piping systems. With compact wafer construction, single disc swing mechanism, and spring-assisted closing, this valve provides reliable non-return performance in space-limited pipeline installations.
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Product Overview
Wafer Type Single Disc Swing Check Valve is a compact non-return valve used to allow flow in one direction and prevent backflow when reverse pressure occurs. The valve disc opens automatically by forward flow pressure and closes when the flow stops or reverses.
This valve uses a single disc swing design with hinge and spring-assisted closing mechanism. The wafer type body allows installation between pipeline flanges, making it suitable for compact piping systems where shorter face-to-face dimensions are required.
Key Features
Single Disc Swing Design
One-piece disc opens by forward flow and closes to prevent reverse flow in the pipeline.
Compact Wafer Body
Wafer type construction provides short face-to-face dimension and easy installation between flanges.
Spring-Assisted Closing
Spring mechanism supports faster disc closing and helps reduce reverse flow impact.
CF8 Construction
CF8 body and disc construction provides corrosion resistance for industrial fluid applications.
PN40 Pressure Rating
Designed for PN40 pressure class applications in industrial piping systems.
Flow Direction Marking
Direction arrow is marked on the valve body to support correct installation orientation.
Technical Specification
| Item | Specification |
|---|---|
| Product Type | Wafer Type Single Disc Swing Check Valve |
| Valve Type | Check Valve / Non-Return Valve |
| Model | H74W-40P |
| Brand | WEISSMILLER |
| Size | DN200 |
| Pressure Rating | PN40 / 4.0 MPa |
| Connection | Wafer Type |
| Body Material | CF8 |
| Disc Material | CF8 |
| Seat Material | 304 |
| Spring Material | 304 |
| Pin Material | 304 |
| Hinge Material | 304 |
| Gasket Material | PTFE |
| Face to Face / L | 127 mm |
| Outside Diameter / D | 290 mm |
| Operation | Automatic by Flow Pressure and Spring Return |
| Flow Direction | Marked on Body |
| Function | Reverse Flow Prevention |
| Installation | Installed Between Pipeline Flanges |
Product Details
Additional product views showing the compact wafer body, single disc swing mechanism, spring-assisted closing design, flow direction marking, and stainless steel construction details.
Applications
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