| Valve Type ID | 1a21b7ac-dd36-4608-9c38-2847e8b655b7 |
|---|---|
| Size Range | DN15-DN150 |
| Pressure Rating | PN250.0-PN1250.0 |
| Temperature Range | -60°C to 200°C |
| Body Material | alloy steel |
| Trim Material | Monel alloy |
| Seal Material | PTFE |
| Stem Material | stainless steel |
| End Connection | union |
| Standard | ISO |
| Operation Method | intelligent control |
| Flow Coefficient (Cv) | 1525.63 |
| Leak Rate | ANSI Class IV |
| Applicable Media | natural gas |
| Applications | natural gas |
| Industry Tags | HVAC |
| Test Pressure | 23 |
| Design Pressure | 1250 |
| Design Standard | ISO |
| Design Temperature | 200 |
| Body Material Grade | LCC |
| Weight (kg) | 1886 |
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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