Poppet hydraulic directional control valve CR series

direct-operated

Switch units combine the function of a directional seated valve with a pressure valve and check valve. They control dual stage pumps, a combination of high-pressure pump and low-pressure pump, in bottom and top ram presses. The low-pressure circuit and the high-pressure circuit are combined for rapid movement. If the low-pressure value is reached or exceeded, the switch unit type CR switches the low-pressure circuit to circulation. The high-pressure pump carries out the pressing action. The switch unit hydraulic release acts automatically. It initiates surge-free decompression that relieves the press. In the closed state the switch unit has zero leakage. The switch unit type CR can be attached directly to hydraulic power packs type MPN and RZ. Features and benefits: Special valve for controlling upstroke presses Smooth, gentle switching No pressure drop during press operation due to zero leakage Fully automatic switching of the low-pressure pump to circulation Intended applications: Machine tools (presses) Woodworking and processing machinery Printing and paper technology Foodstuff and packaging machinery