Directional control valves with spring return or detent

Functional description, section

The type WMM valves are hand lever actuated directional spool valves. They control the start, stop and direction of a flow. The directional valves basically comprise of a housing (1), hand lever(2), control pool (3), as well as one or two return springs (4). In the unoperated condition the control spool (3) is the neutral or its initial position by the return springs(4). The control spool(3) is actuated via the hand lever (2), this acts via a joint and the pin(5) directly onto the control spool (3). The spool is thereby moved out of its rest position into its required switched position. After the hand lever (2) has been returned to the switched position zero, the spool (3) is returned to the neutral position via the return springs (4).

Type H-4WMM.../F… (with detent)
These valves are either 2 or 3 position directional control valves which are fitted with a detent (6), which operates in all of the switched positions.

Ordering details


Example:
Spool E on the side "a".                                        4.Spool K only for Size 16 and 25.
Order example: ….EA…                                       5. Spool S only for Size 16.
Spool E on the side "b".                                       6.For Size 16 and 25, spool C is the same as spool D.
Order example: ….EB…                                         For Size 16 and 25, spool D is the same as spool E.
1.Spool E1: P A/B preview port (only for Size 6)     7.Only for Size 16 and 25
2.For Size 10, Spool B, Y hand lever on side B.     8.Only for Size 16 and 25
3.Spool A and B only for Size 6 and 10.

Technical data

Size		6	10	16	25
Operating pressure   (Mpa)	port A, B, P	to 31.5		to 35
	port T	To 16	To 15	To 25	To 25
Max. flow            L/min		To 60	To100	To 300	To 450
Flow cross section (control position 0)		for symbol Q, 6% of nominal cross section for symbol W, 3% of nominal cross section		for symbol Q, V, 16% of nominal cross section for symbol W, 3% of nominal cross section
Pressure Fluid		Mineral oil or Phospate ester
Temperature range      ℃		-30~+80
Viscosity range        mm²/s		2.8~500
Weight                kg		Approx 1.4	Approx 3.3	Approx 8	Approx 17
Control power of push lever (N)		Without return pressure approx20 without return pressure approx 30	With detent approx16 to 23 Without detent approx20 to 27	Approx 75	Approx120

Unit dimensions (Dimensions in mm)

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