Pressure Control Unit – PCU20 Designed to control double pumps of HI-Low system. Unloads the low pressure pump when the system pressure rises above the unloader pressure Relieves the high pressure pump when the system pressure reaches the relief valve setting. Solenoid unloading facility is available as an optional feature PRISM HYDRAULICS Authorised Dealer Al Ameen Enterprises Kolkata prism hydraulics prism pressure relief valve