SPD V2 are the latest check valves. These check valves come with a completely new construction that differs from all others on the market where the check valve is completely sealed and can withstand very high pressures and back pressures. These check valves are specially designed to handle all fuels, air, oil. The non-return valve is developed to cope with ethanol, so internal components have been adapted for this. This is a full-flow construction that does not throttle the flow. Full flow check valve. Can be used for fuel, oil, water and air systems. Thread : AN10 on both sides This check valve does not throttle the flow. Opening pressure approx.: 0.04 bar Measure Key socket: 31.5mm Largest diameter: 36mm Total length: 74mm Areas of use Staged activation of fuel pumps When using two or more fuel pumps that do not run all the time but are activated gradually, a non-return valve is mounted on these to prevent fuel from being pushed out the back way back to the fuel tank and making it ha