- Outlet Connection: 1 1/4" FNPT
- Inlet Connection: 1 1/4" FNPT
- Material: Steel
- Flow Indicator: No
- Seat Type: Soft Seats
Application: In-Line Full Flow Swing Check
Propane Flow Capacity @ 10 PSIG Differential Pressure: 132 GPM
Back check valves allow flow in only one direction and are normally closed. They are installed in liquid filling connections on stationary storage tanks and bobtail delivery trucks and liquid transfer lines. The soft seated construction is for the filling connection on bobtail delivery trucks. Because the valve gives tight shutoff, piping on the bobtail can be depressurized for maintenance or repair without leakage.