Direct answer · 2026-08-25
How do I select a check valve (NRV) from an Indian manufacturer?
Match valve type to layout: swing check for horizontal lines, dual-plate wafer for space-constrained headers, non-slam axial for high-energy pump discharge. Specify API 594 or BS 1868, material (WCB, SS316, CI), class, and cracking pressure.
Check Valve Manufacturer India — NRV Selection Guide
Technical guide · Supreme Valves India · 2026-08-25
Non-return valves protect pumps and compressors from reverse flow. Indian export houses supply swing, lift, dual-plate, and axial non-slam designs in sizes from 15 NB to 600 NB.
Type selection
- Swing check: Low pressure drop; requires straight upstream run; common on firewater and cooling water.
- Dual-plate wafer: Compact; suitable between flanges on HVAC and utility headers.
- Non-slam axial: Fast closure on pump trip; use on boiler feed and high-head pumps.
Material and class
WCB Class 150/300 for general service; SS316 for corrosive or offshore seawater packages; cast iron for HVAC. Confirm face-to-face per API 594 or manufacturer standard before ordering replacement NRVs on brownfield sites.
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