WEH Series Directional Hydraulic Valves Of Pilot Operated

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WEH Series Directional Hydraulic Valves Of Pilot Operated

The WEH series directional hydraulic valves of pilot operated are advanced components that provide precise and efficient control over hydraulic systems. Designed to meet the demands of various industries, these valves offer exceptional performance, reliability, and versatility.

The WEH series directional hydraulic valves of pilot operated are reliable, high-performance components that empower operators with precise control and efficient fluid management in hydraulic systems. With their pilot-operated design, exceptional directional control, a wide range of configurations, and high flow capacity, these valves offer the reliability and versatility required in various industries. Following the recommended usage methods and adhering to regular maintenance practices, the WEH series valves will continue delivering exceptional performance. Upgrade your hydraulic system with the WEH series directional hydraulic valves operated and experience the benefits of precision, control, and reliability.

WEH Series Directional Hydraulic Valves Of Pilot Operated Key Characteristics:

  • Pilot Operated Design:
    • The WEH series valves utilize a pilot-operated design, which enhances their responsiveness and control accuracy.
    • This design enables the valves to handle high-pressure applications, ensuring optimal performance easily.
  • Directional Control:
    • These hydraulic valves excel in providing precise directional control of hydraulic fluid.
    • Operators can easily manage fluid flow and direct it to different actuators or components within the hydraulic system.
  • Wide Range of Configurations:
    • The WEH series valves are available in various configurations, including various sizes, flow rates, and pressure ratings.
    • This versatility allows them to be tailored to specific application requirements and system specifications.
  • High Flow Capacity:
    • These valves are designed to handle high flow rates, making them suitable for applications that demand substantial fluid flow.
    • Their optimized internal passages and robust construction ensure minimal pressure drop and efficient fluid management.

WEH Series Directional Hydraulic Valves Of Pilot Operated Parameter:

NG10

SpecificationsWEH10  type
Max. operating  pressure:P、A、B350
Port  TWith external pilot oil drain  bar315
With internal pilot oil drain   barDC  210 AC  160
Port  YWith external pilot oil drain  barDC  210 AC  160
Min. control pressureWith external pilot oil supply  ( not apply to  C、Z、
F、G、H、P、T、V)   bar
3-position valve  10
Spring-return 2-position valve            10
Hydraulic-return 2-position valve            7
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar
6.5
Max. control pressure  bar250
FluidMineral oil,Phosphate ester
Fluid temperature range   ℃-30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range mm2/s2.8  to  500
Switching pilot oil volume             cm33-position valve  2.04
2-position valve  4.08
Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC )
Control pressure  bar70140210250
ACDCACDCACDCACDC
3-position valve   ms3065256020551550
2-position valve    ms3580307525702065
Switching times (= Valve switching time from the switched position to the neutral position)
3-position valve    ms30
2-position valve    ms3540303525302025
Installation positionHC、HD、HK、HZ、HY Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/minabout 35
WeightSingle solenoid valve kg6.7
Double solenoid valve kg7.1
Switching time regulator kg1.0
Reducing valve kg0.5

NG16

SpecificationsWEH16…  type
Max. operating  pressure:P、A、B350
Port  TWith external pilot oil drain  bar250
With internal pilot oil drain   barDC  210 AC  160
Port  YWith external pilot oil drain  barDC  210 AC  160
Min. control pressureWith external pilot oil supply  ( not apply to  C、Z、
F、G、H、P、T、V)bar
3-position valve  14
Spring-return 2-position valve            14
Hydraulic-return 2-position valve       14
With internal pilot oil supply ( apply to  C、Z、F、 G、
H、P、T、V) bar
When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar250
FluidMineral oil,Phosphate ester
Fluid temperature range   ℃-30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range mm2/s2.8  to  500
Switching pilot oil volume
– Spring-centering 3-position valve   cm35.72
– 2-position valve      cm311.45
* * Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar50150250
ACDCACDCACDCACDCACDCACDC
– Spring-centering 3-position valve  ms356530603058
– 2-position valve     ms456535553050
**Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms30
– 2-position valve    ms454535353030
Installation positionC,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/minabout 35
Weight  kgabout 9.5

NG25

SpecificationsWEH25…  type
Max. operating  pressure:P、A、B350
Port  TWith external pilot oil drain  bar250
With internal pilot oil drain   barDC  210 AC  160
Port  YWith external pilot oil drain  barDC  210 AC  160
Min. control pressureWith external pilot oil supply  ( not apply to  C、Z、F、
G、H、P、T、V)   bar
Spring-centering 3-position valve           13
Spring-return 2-position valve                13
Hydraulic-return 2-position valve            8
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar
When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar250
FluidMineral oil,Phosphate ester
Fluid temperature range   ℃-30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Switching pilot oil volume
– Spring-centering 3-position valve    cm314.2
– 2-position valve      cm328.4
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar50140210250
ACDCACDCACDCACDC
– Spring-centering 3-position valve  ms5085407535703065
– 2-position valve     ms1201601001308512070105
*Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms40
– 2-position valve    ms1201259510085907580
Installation positionC,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/minabout 35
Weight   kgabout 18

NG32

SpecificationsWEH32…  type
Max. operating  pressure:P、A、B350
Port  TWith external pilot oil drain  bar250
With internal pilot oil drain   barDC  210 AC  160
Port  YWith external pilot oil drain  barDC  210 AC  160
Min. control pressureWith external pilot oil supply

With internal pilot oil supply

   3-position valve    8.5
Spring-return 2-position valve            10
Hydraulic-return 2-position valve       15
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar
When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar250
FluidMineral oil,Phosphate ester
Fluid temperature range   ℃-30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range   mm2/s2.8  to  500
Switching pilot oil volume
– Spring-centering 3-position valve    cm329.4
– 2-position valve      cm358.8
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar50150250
ACDCACDCACDC
– Spring-centering 3-position valve  ms6580509035105
– 2-position valve     ms1001307510060115
*Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms( DC :50,AC :60)
– 2-position valve    ms1159035706565
Installation positionC、D、K、Z、YType hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/minabout 50
Weight  kgabout 36

WEH Series Directional Hydraulic Valves Of Pilot Operated Advantages:

• Electrohydraulic directioanl valve directioanls the oil path by controlling the main spool
• WEH electrohydraulic control
• Installation face follow DIN 24340 A, ISO 4401 and CETOP-RP 121H Sub-plate mounting connection
• Wet DC or AC solenoid (optional)
• With manual emergency control
• Electropneumatic connection as single or center connection
• Spring or hydraulic alignment or bias

Usage Method Of WEH Series Directional Hydraulic Valves Of Pilot Operated:

  • System Integration:
    • Identify the optimal location for installing the WEH series valves within the hydraulic system, considering the desired flow path and control requirements.
    • Ensure compatibility with the system’s pressure and flow specifications.
    • Mount the valves securely using appropriate brackets or mounting accessories.
  • Pilot Control Setup:
    • Connect the pilot control lines to the designated ports on the valves, following the manufacturer’s instructions.
    • Ensure proper sizing and routing of the pilot lines to maintain optimal control signal integrity.
  • Fluid Connections:
    • Select compatible hydraulic fittings and hoses for secure and leak-free connections.
    • Follow the manufacturer’s instructions for proper torque values during the installation process.
    • Use appropriate thread sealants or tape to ensure reliable seals.
  • Control and Adjustment:
    • To operate the WEH series valves, utilize the recommended control method, such as manual levers or electrical controls.
    • Adjust the valves’ settings to achieve the desired flow direction and rates, ensuring optimal performance.

How Do Hydraulic Valve Lifters Work?

Hydraulic valve lifters, also known as hydraulic tappets or hydraulic lash adjusters, play a vital role in the proper operation of an internal combustion engine. They are responsible for maintaining the proper clearance, or “lash,” between the engine’s camshaft and valve train components. Here’s an overview of how hydraulic valve lifters work:

  1. Structure:
    • Hydraulic valve lifters are small cylindrical devices typically made of metal.
    • They are between the camshaft and the engine’s valve train components, such as the pushrods, rocker arms, or overhead cam followers.
  2. Hydraulic Operation:
    • Inside the hydraulic valve lifter, a small piston mechanism operates based on hydraulic pressure.
    • The lifter is filled with hydraulic fluid, typically engine oil, which acts as a working fluid.
  3. Camshaft Interaction:
    • The camshaft has lobes or eccentric shapes that push against the lifters as it rotates.
    • As the camshaft lobe comes into contact with the lifter, it applies a force that compresses its internal piston.
  4. Lash Adjustment:
    • When the lifter’s piston is compressed, it pushes the hydraulic fluid out of the lifter through a small orifice.
    • This hydraulic fluid is expelled into the engine’s oil galleries or passages.
  5. Lash Compensation:
    • The expelled hydraulic fluid creates a hydraulic cushion or “spring” effect, compensating for any clearance or lash between the camshaft lobe and the valve train components.
    • This compensation eliminates excessive clearance and ensures that the valve train remains in constant contact with the camshaft lobes.
  6. Maintenance of Lash:
    • If there is excessive clearance or lash in the valve train due to wear or other factors, the lifter’s internal piston will extend further to maintain the necessary hydraulic pressure.
    • This extended position allows the lifter to take up the additional clearance, thus maintaining proper valve lash.
  7. Oil Pressure and Lubrication:
    • The hydraulic valve lifters rely on the engine’s oil pressure for proper operation.
    • The oil pump circulates oil through the engine, and the lifters receive a continuous oil supply to maintain hydraulic pressure and lubrication.

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我们还拥有一条由动力链驱动的大型油缸半自动喷漆生产线,设计产能为每班 60 箱。

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我们拥有一流的检验设施和试验台,确保气缸的性能符合要求。

 

 

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