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* Realistic industrial representation•Genuine brand compatibility
Check & Backflow Valves
NRV
Valves & Piping SparesDealer Certified
Non-Return Valves (check valves) in dual-plate, swing-check, or lift-check designs. Installed on pump delivery pipes to prevent backflow and protect pumps from catastrophic water hammer shocks when motors shut off.
Key Features & Benefits
- Automatic shut-off actuated by back-pressure flow; no manual control required
- Dual-plate check design features spring-assisted closing to prevent slamming
- EPDM or metal-to-metal seating ensures high sealing capability
- Compact structural face-to-face length saves piping space
Technical Specifications
| Pipeline Bore Size | DN50 to DN500 flanged sizes |
| Pressure Capability | PN10, PN16, or PN25 pressure limits |
| Design Formats | Dual Plate Check, Swing Check, Lift Type Check |
| Shell Strength Test | Hydrotested up to 37.5 Bar (PN25) |
| Standard Flange Fit | Conforms to DIN, BS, or ANSI standards |
Applications & Uses
- Delivery pipes of booster pumps and municipal water headers
- Boiler feed water lines (preventing steam boiler backflow)
- Sewage sump discharge lines (preventing line emptying)
- Fire fighting manifold lines
Industries Served
Water SupplyWastewater TreatmentCommercial BuildingsFire FightingIndustrial Plants