| Valve Type ID | 1a21b7ac-dd36-4608-9c38-2847e8b655b7 |
|---|---|
| Size Range | DN65-DN260 |
| Pressure Rating | PN100.0-PN200.0 |
| Temperature Range | -20°C to 150°C |
| Body Material | stainless steel |
| Trim Material | Hastelloy |
| Seal Material | FKM |
| Stem Material | duplex steel |
| End Connection | welded |
| Standard | DIN |
| Operation Method | hydraulic |
| Flow Coefficient (Cv) | 1640.66 |
| Leak Rate | ANSI Class V |
| Applicable Media | high-viscosity media |
| Applications | high-viscosity media |
| Industry Tags | nuclear power |
| Test Pressure | 108 |
| Design Pressure | 200 |
| Design Standard | DIN |
| Design Temperature | 150 |
| Body Material Grade | WC6 |
| Weight (kg) | 983 |
Check valves permit flow in one direction only and protect systems from backflow. Selection balances the type (swing, lift, dual-plate, tilting-disc) against pressure, flow velocity, and space. Sizing to avoid chatter and confirming the cracking pressure are essential for reliable operation.
Q: What is a check valve used for?
A: Check valves prevent reverse flow in a pipeline, protecting pumps, compressors, and upstream equipment from backflow damage.
Q: Which standards govern check valves?
A: Common standards include API 594 (dual-plate and swing check), API 6D, and MSS SP-71.
Guidance reflects general engineering practice for check valves; confirm against the project specification and applicable standards before procurement.
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