SMC Pressure Regulating Valves. SMC 555 556 Balanced Pressure Regulator is designed for carwash and pressure wash applications where a weep gun is used or bypass can be returned to the supply tank. Available with three standard spring pressure ranges to 2000 psi. Can be used in systems with more than one outlet. Buna-N, Ethylene Propylene and Fluoroelastomer (Viton®) seals are available for chemical compatibility.

555 Series mounts to a “T” from the pump outlet and is repairable.

556 Series mounts to the pump outlet with a flow through “T-Body” and is repairable.