Disc Check Valve
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Disc Check Valve
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A disc check valve is a type of valve that prevents backflow in a pipeline by using a disc to close the valve when the fluid pressure drops below a certain threshold. It is commonly used in applications where a fluid is being pumped through a line and there is a risk of backflow. When the fluid flow stops, the disc closes, preventing the fluid from flowing back through the valve.
The versatility of disc check valves makes them suitable for a wide range of applications across various industries. They are commonly employed in water and wastewater treatment plants, chemical processing facilities, oil and gas pipelines, HVAC systems, and pharmaceutical manufacturing. Disc check valves come in various designs, including swing disc, lift disc, and dual plate configurations, each offering specific advantages in terms of flow characteristics, pressure drop, and suitability for different fluid types.Â
Features
- One-Way Flow Control
- Disc Closure Mechanism
- Compact Design
- Low Pressure Drop
- Fast Response Time
- Versatile Applications
Applications
- Water and Wastewater Treatment
- Oil and Gas Industry
- Chemical Processing
- HVAC Systems
- Marine Applications
- Medical Equipment
Specifications
| Valve Type | Spring-loaded Disc, Swing Disc, Dual Plate Disc |
| Size Range | 1/2" to 24" (or larger, depending on manufacturer) |
| Pressure Rating | 150 PSI to 2500 PSI (or higher, depending on standard and material) *Note: often given as a Class (e.g., Class 150, Class 300) |
| Temperature Range | -20°F to 400°F (or wider, depending on material and design) *Note: Check the specific material temperature limits. |
| Body Material | Stainless Steel (304, 316), Carbon Steel (A105, A216 WCB), PVC, CPVC, Brass, Ductile Iron, other alloys |
| Disc Material | Same as body material, or compatible alloy/polymer (e.g., PTFE, Viton) |
| Seat Material | Metal (integral with body or replaceable), Soft Seat (e.g., EPDM, Viton, PTFE) |
| End Connections | Threaded (NPT, BSP), Flanged (ANSI, DIN), Wafer, Lug |
| Applicable Media | Water, Oil, Gas, Chemicals, Steam (check material compatibility) |
| Cracking Pressure | 0.5 PSI to 5 PSI (typical range for spring-loaded; swing check depends on gravity/backpressure) |
| Standards Compliance | API 594, API 6D, ASME B16.34, MSS SP-61 (check specific valve certification) |
| Mounting Position | Horizontal, Vertical (some designs are orientation-specific) |
| Coating/Lining | Epoxy, PTFE, Rubber (for corrosion resistance or special applications) |
