Releasable check valves type RH and DRH - HAWE Hydraulik - #1

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Check valves with release type RH and DRH The check valves with hydraulic release type RH and DRH are used for blocking one or two consumer lines, as hydraulically actuated drain valves, or idle circulation valves. The valves may be optionally equipped with a pre-release, for one or both connection sides, to prevent decompression surges in the event of high pressure and high consumer flows. Features and benefits: ■ Max. pressure 700 bar ■ With pre-release for soft shifting Intended applications: ■ For controls of zero leakage hydraulic cylinders in combination with leaking (design related) cylinders ■ Return relieve, when the return flow from double acting cylinders with unequal area ratio exceeds the permissible values for the directional valve ■ Hydraulically actuated drain or circulation valve Nomen- Check valve with hydraulic release or clature: releasable double check valve Design: Individual valve for ■ In-line installation ■ Manifold mounting valve Actuation: Hydraulic pmax : 400...700 bar Qmax : 15...160 lpm Design and order coding example RH 3 V " 1 Function Without pre-release (-) With pre-release (V) Basic type, size Releasable check valve RH, size 1 to 5 DRH 3 LSS 30 /100 T I Pre-charge pressure [bar] Pressure setting [bar] Basic type, size, function Releasable double check valve DRH, size 1 to 5 Additional versions: ■ With pre-release (one or both sides) With shock valves (for hydraulic motors) With safety valve preventing slow pressure rises With leakage port preventing unintended open-up when pressure migrated from the control side Manifold mounting version (type DRH3P) ■ www.hawe.de | 2011 | 1