Directional valve with mechanical, manual operation Type WHD,WN,WP10...L3X

4-way 3-position, 4-way 2-position and 3-way 2-position directional valve with mechanical, manual operation

Type WHD,WN,WP10...L3X

Features

- Direct operated directional spool valve

- Types of actuation:

• Pneumatic (WP, WPZ)

• Hydraulic (WH, WHZ)

- Sub-plate mounting

- Porting pattern to DIN 24 340 Form A, and ISO 4401

Function

Valves of type WP and WH are directional spool valves with fluid logics actuation. They control the start, stop and direction of a flow.

The directional valves basically consist of housing (1), one or two actuation elements (2) (hydraulic, pneumatic actuation cylinder), one or two return springs (3) and control piston (4).

Type WHD.../

In the initial state, the main spool(2) remain in the intermediary civilian under the action of two return springs(3), into the external model oil through the a port into the oil to promote the left of the piston(4) to the right, remove the

signal Oil, the main spool(2) back to the middle position under the right spring force back to the middle position. If external oil from the b port, the oil push the right side of the piston (4) left, thus driving the main spool (2) left, remove the signal oil, the main spool (2) back to the middle position under the left spring force.

Without spring return, Type ..O/..

(Only for Spool Symbol A,C,D)

If using actuation elements without return springs and without detent, a defined spool position is not given in the de-energized condition.

Without spring return with detent,

Type ..OF/.. (Only for Spool Symbol A,C,D)

Directional valves with hydraulic or pneumatic actuation are also available as 2-spool position valve with detent. If using actuation elements with detent, every spool position can be locked.

Cartridge throttle

The use of a throttle insert is required when due to prevailing operating conditions, flows can occur during the switching processes, which exceed the performance limit of the valve. It is inserted in channel P of the directional valve.

Specifications

Symbols

Technical data

Unit dimensions (WHD) (Dimensions in mm)

1 Used for 3-postition valve or,

2-postition */O, */OF

2 Used for 2-postition valve B, Y, EB...

3 Name plate

4 2-postition valve A, C, D, EA...

5 Valve with a actuator (2-position valve)

6 O-ring 12×2 , with ports A, B, P, T

7 Port TB used for special manifold

Valve mounting screws:

Internal hexagon screw

M6×40 GB/T 70.1-10.9,

Tightening torque MA =15.5Nm

It must be ordered separately, if connection plate is needed. Type:

G 66/01 (G 3/8), G 66/02(M18×1.5)

G 67/01 (G 1/2), G 67/02(M22×1.5)

G 534/01 (G 3/4), G 534/02(M27×2)

Unit dimensions (WN, WP) (Dimensions in mm)

1 2-position valves

symbols B, Y, EB...

2 2-position valves

symbols A, C, D, EA...

3 3-position valves

4 Cover for valves with one operating element

(2-position valve)

5 Name plate

6 O-ring 12×2

7 The additional T connection (TB) can also be optionally used in special manifold blocks.

8 Porting pattern

9 Pilot port

Valve mounting screws:

Internal hexagon screw, M6×40 GB/T 70.1-10.9,

Tightening torque, MA =15.5Nm

It must be ordered separately, if connection plate is needed. Type:

G 66/01 (G 3/8), G 66/02(M18×1.5)

G 67/01 (G 1/2), G 67/02(M22×1.5)

G 534/01 (G 3/4), G 534/02(M27×2)

Leeman Paper Co., Ltd.
Stora Enso

Mustad.
Yinzhou Paper Co., Ltd.

Guangxi University
Nanjing Forestry University