Description Size 16 … 32 Component series 7X, 5X Maximum operating pressure 350 bar Maximum flow 1100 l/min Features Direct operated directional spool valve with hand lever actuation Porting pattern according to DIN 24340 form A and ISO 4401 with spring return or detent, optional Actuation mechanism protected against contamination and humidity ingress Head end with actuation mechanism exchangeable without disassembly of the valve Inductive position switch and proximity sensors (contactless) Product description Valves type WMM are manually actuated directional spool valves. They control the start, stop and direction of a flow and basically consist of housing (1), hand lever (2), control spool (3) and one or two return springs (4). When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4). The control spool (3) is actuated directly by the hand lever (2). By means of a socket and the bolt (5), it acts directly on the control spool (3) which is thereby moved from its rest position to the desired end position. When the hand lever (2) has been reset to spool position zero, the return spring (4) pushes the control spool (3) back to its rest position again. Type H-4WMM../F.. (with detent) This version is a directional valve with 2 or 3 spool positions and a detent (6) which locks all spool positions. Type H-4WMM 16 E 7X/… Type H-4WMM 16 E 7X/F… (with detent) Type code 01 02 03 04 05 06 07 08 09 10 H – 4 WMM / * 01 Maximum operating pressure 350 bar H 02 4 main ports 4 Actuation 03 Hand lever WMM 04 Size 16 16 Size 25 22 Size 32 32 05 Spool symbol, e. g. C, E etc., see Symbols 06 NG16 and 25 – Component series 70 to 79 (70 to 79: unchanged installation and connection dimensions) 7X NG32 – Component series 30 to 39 (30 to 39: unchanged installation and connection dimensions) 5X 07 With spring return no code With detent F Spool position monitoring (NG16 and 25 only) 08 Without position switch no code Monitored spool position "a" QMAG24 Monitored spool position "b" QMBG24 Monitored rest position QM0G24 Seal material 09 NBR seals no code FKM seals (other seals upon request) Observe compatibility of seals with hydraulic fluid used. V 10 Further details in the plain text * Preferred types and standard units are contained in the EPS (standard price list). Technical data general Size 16 25 32 Weight (approx.) kg 8 12.2 49 Operating force with detent (approx.) N 75 105 100 with spring return (max.) N 75 105 150 Installation position any Ambient temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 Actuation angle from the central position 1) 2 x ° 26 24.5 25 1) see Unit dimensions hydraulic Size 16 25 32 Maximum operating pressure Port A bar 350 Port B bar 350 Port P bar 350 Port T bar 250 1) 250 2) Maximum flow l/min 300 450 1100 Hydraulic fluid see table Hydraulic fluid temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 Viscosity range mm²/s 2.8 … 380 Maximum admissible de
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