Valken Ultra Rig Low Pressure Output Tank Kit (150psi) Replacement Loader Parts surrounded by performance stretch fabrics 320 56 0159 surrounded by performance stretch fabrics and neoprene While existing designs may require a low force to open the exhaust valve they are still bound by the need to overcome blowback using the speed and mass of the bolt which means that the valve has to be opened with a greater speed than is actually required The Valken Ulra Rig low pressure regulator is threaded to fit popular paintball style compressed air systems and designed to provide optimum performance with airsoft HPA engines operating at low pressure for maximum consistency and efficiency the Valken Ultra Rig accepts input pressures up to 800psi allowing its use with most popular and widely available paintball style HPA systems