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Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X

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Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X

China Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X supplier

Large Image :  Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X

Product Details:

Place of Origin: China
Brand Name: Hengli
Model Number: Type Z4WEH/Z4WH10 ..L4X

Payment & Shipping Terms:

Minimum Order Quantity: 1 set
Price: Negotiable
Packaging Details: Wooden packing
Delivery Time: 5-30 days upon order quantity
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 50 set / 30 days
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Detailed Product Description
Material: C.S/SS Seal: NBR/FKM
Pressure: 315 Bar Max. Flow: 160 L/min
Environment Temperature Range: -30 To +50 (NBR Seals)/-20 To +50 (FKM Seals) ℃

4/2 and 4/3 way isolator valve-Type Z4WEH/Z4WH10 ..L4X
Features:
– Directional spool valve, pilot operated
– 2 types of actuation:
Electrohydraulic (type WEH)
Hydraulic (type WH)
– Functions as; an isolating/free-flow valve or as an isolating/free-flow short circuit valve
– P and T have free-flow in all switched positions
– Porting pattern to ISO4401-05-04-0-05
– Wet-pin DC or AC voltage solenoids, optional
– Manual override, optional
 
Function and configuration
Valves of type Z4WEH are directional spool valves with electro-hydraulic actuation. They control the start and stop of a flow.
These directional valves basically consist of the housing (1), main control spool (2), one or two return springs (3.1 and 3.2), and pilot valve (4).
Main control spool (2) in the main valve is held by the springs in the neutral or initial position. In the initial position, the two spring chambers (6) and (8) are connected to tank via pilot valve (4). The pilot valve is supplied with pilot oil via pilot channel (7). The pilot oil supply can be provided internally or externally (externally via port X in the sandwich plate).
When the pilot valve is operated, e.g. solenoid "a", pilot spool (5) is pushed to the left, and consequently spring chamber (8) is pressurized to pilot pressure. Spring chamber (6) remains with no pressure. The pilot pressure acts on the left side of main control spool (2) and pushes it against spring (3.1). As a result of this, the connections on the component side and on the plate side are opened according to the relevant symbols.
When the solenoid is de-energized, pilot spool (5) returns to the initial position. Pressure chamber (8) is connected to the tank.
The pilot oil is drained from spring chamber (8) internally via pilot valve (4) into channel T (Y).
An optional manual override (9) allows pilot spool (5) to be moved without energization of the solenoid.
 
Throttle insert
The use of throttle insert (11) is required, if the pilot oil supply in channel P of the pilot valve is to be limited.
Throttle insert (11) is to be installed in channel P of the pilot valve.
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
Valves of type Z4WH are directional spool valves with hydraulic actuation. They control the start and stop of a flow.
These directional valves basically consist of valve housing (1), main control spool (2), one or two return springs (3.1) and (3.2) in the case of valves with spring return or spring centering, as well as pilot oil sub plate (10).
Main control spool (2) is operated directly by pressurization.
Main control spool (2) is held by springs in the neutral or initial position. The pilot oil is supplied and drained externally.
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
 
Spool symbols
Type Z4WEH ( = component side, = plate side)
Ordering code                  Version "ET"                                                        Version "T"
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
1) Opening cross-section in spool position "a" (A2 → B2) = 50 mm2
2) Opening cross-section in spool position "b" (A2 → B2) = 35 mm2
 
Type Z4WEH ( = component side, = plate side)
Ordering code                                                             Version "No code"
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
1) Opening cross-section in spool position "a" (A2 → B2) = 50 mm2
2) Opening cross-section in spool position "b" (A2 → B2) = 35 mm2
 
Specification
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
 
Technical data
 

Fixing positionOptional
Environment temperature range-30 to +50 (NBR seal)
-20 to +50 (FKM seal)
WeightSingle solenoidkg4.2
Double solenoidskg4.6
Valve with hydraulic actuationkg3.5
Switching time adjustmentkg0.8
Pressure reducing valvekg0.4
Plate for version “T”kg0.5
Max.operating pressurePort A, Bbar315
Port T (Pilot oil drain only internal)bar160 (version “WEH” with AC solenoid)
210 (version “WEH” with DC solenoid)
Port Pbar315
External pilot oil supply
Internal pilot oil supplybar210 (without pressure reducing valve)
315 (with pressure reducing valve)
Max. flow-rateL/min160
FluidMineral oil suitable for NBR and FKM seal
Phosphate ester for FKM seal
Fluid temperature range-30 to +80 (NBR seal)
-20 to +80 (FKM seal)
Viscosity rangemm2/s10 to 500
Minimum pilot pressurebar12
Degree of contamination Maximum permissible degree of contamination of the pressure fluid is to ISO 4406 (C) class 20/18/15

Caution: with electrical connections the protective conductor (PE) must be connected according to the relevant regulations.
 
Unit dimensions (dimensions in mm)
Type Z4WEH10
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
Type Z4WEH10
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
1   Nameplate of complete valve
2   Nameplate of pilot valve
3   Main valve
4   Sandwich plate for external pilot control (to be used at operating pressure > 210 bar)
5   Pressure reducing valve "D3" (must be used in the case of pilot pressures above 250 bar; only with version "Z4WEH")
6   Space required to remove mating connector
7   Switching time adjustment (for throttle check valve); Depending on the installation position, meter-in or meter-out control (illustration: meter-      in control)
8   R-ring plate
9   Pilot valve
     – Type 4WE 6 J.. for symbol E62
     – Type 4WE 6 Y.. for symbol E50, E51, E52, E63, E68
     Dimensions () for valve with AC solenoid
10 Dimension for valve with manual override "N";
     Dimensions () for valve with AC solenoid
11 Solenoids "a" and "b" (can be rotated 90° )
12 Identical seal rings for ports A, B, P, TA and TB
13 Identical seal rings for ports A, B, P and T
14 Pilot oil sub plate
15 Valve mounting bores
     Valve mounting screws (separate order)
     4 hexagon socket head cap screws
     ISO 4762 - M6 - 10.9
16 Valve mounting screws (separate order)
     4 hexagon socket head cap screws
     ISO 4762 - M5 - 10.9
 
Stroke adjustment, attachment options (dimensions in mm)
Electronic Hydraulic Flow Control Valve , Hydraulic Pilot Control Valve Z4WEH/Z4WH10 ..L4X
17 Locknut 27 A/F
18 Adjustment spindle, hexagon socket 5 A/F
 
The stroke adjustment feature limits the stroke of the main spool. The spool stroke can be reduced by loosening locknut (17) and turning adjustment spindle (18) clockwise. The control chamber must be pressure less during this process.
Stroke 6 mm (1 turn = 1 mm stroke)

Attachment
options

Ordering
code

L1L2

Stroke adjustment
on side A and B

1095149

Stroke adjustment
on side A

1195 

Stroke adjustment
on side B

12 149

 

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