Product Details
The Humphrey R665 1/4 pipe, check valve includes an air pilot override. A Pilot Operated Check Valve, the R665 functions as a check valve until an air pilot signal overrides the check function, allowing full flow in either direction. Valve returns to normal checking function once the air pilot signal is removed. Order mounting base separately.
| Description | Check Valve, w/Pilot Override |
| Media | Air, Inert Gas |
| Valve Function | Check |
| Piping Type | Inline, Direct Piping |
| Port Size | 1/4 NPSF (1/8 NPSF pilot) |
| Number of Ports | 3 ports |
| Number of Positions | 2 positions |
| Size (in) HxWxD | 2.78 x 1.63 DIA |
| Options Included | With air pilot override |
| Flow Coefficient (Cv) | 0.83 |
| Pressure Range (psi) | 0.5-125 |
At Valved Pressure of:
Recommended Pilot Pressure (psi): | | <=30 PSI | 60 PSI | 90 PSI | 120 PSI | | 28 | 48 | 67 | 86 |
|
| Ambient Temperature Range (⁰F) | 0-225 |
| Wetted Materials | Zinc Diecast, Brass, Buna N |
| Weight (oz) | 9.0 |
