Description Close Coupled Unloder Valve for Use with the NP10 and NP16 Pump ranges .Unloder valves bypasses excess pressure during use. When system is dead headed the unloader will go onto low pressure bypass. Common Features Part No. 12.6291 - 60.0820.00 VB135 Close Coupled Unloader Valve Suitable for SPECK NP10 Only 12.6292 - 60.0930.00 VB75 Close Coupled Unloader Valve Suitable for SPECK NP16 Only Inlet. 1/2 Bsp F Oulet. 3/8 Bsp F Bypass . 3/8 Bsp F Rated Pressure - 12.6291 - 60.0820.00- 160 Bar - 16 MPa - 2300 Psi 12.6292 - 60.0930.00 - 220 Bar - 22 MPa - 3200 Psi Permissible Pressure - 12.6291 - 60.0820.00 - 180 Bar - 18 MPa - 2600 Psi 12.6292 - 60.930.00 - 250 Bar - 25 MPa - 3650 Psi Rated Flow Rate - 25 / 30 l/min - 6.5 / 8 USGpm Rated Temperature - 90 C