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Check Valve, Direct Operated
Check Valve, Direct Operated
Direct operated check valves, type NRD valve is normally closed valve, as puppet is seating on valve seat, flow B to A is checked and restricted however flow from A to B is open. Springless valve, with 0 (zero) cracking pressure has to be vertically mounted, keeping A at the bottom and B at the top. The thread size BSP (A/F) is: Œ (19), 3/8 (24), œ (30) Ÿ (36), 1 (46), 1-1/4 (60) and 1-1/2 (65). Line mounted check valve with BSP connection; allows the flow in one direction, reverse flow is leak free closed; and cracking pressure from 0 bar to 5 bar as per model. Direct operated check valves, type NRD are available in sizes 6, 8, 10, 15, 20, 25 and 30; pressure 315 bar; and flow 450 LPM (max).