0102030405
WENK Pneumatic 3H/4H Manual Lever Valve
Product Detail
Acting Mode |
Manual Direct-Acting |
Working Pressure |
0~0.8Mpa |
Proof Pressure |
1.2 MPa |
Working Temperature Range |
0℃~60℃ |
Body Material |
Aluminum Alloy |
3H/4H Series Manual Lever Valve User Manual

Product Overview
The WENK Pneumatic 3H/4H Series Manual Lever Valve is a precision-engineered manually operated valve designed for reliable operation in pneumatic systems. This series features a compact aluminum alloy body and durable operating lever, ensuring smooth lever actuation and long service life.

Installation Steps
-
Pre-installation Preparation
- Ensure air supply pressure is within the valve's operating pressure range
- Verify air supply is filtered (40μm or finer)
- Check valve model and specifications match system requirements
-
Installation Process
- Select appropriate installation location ensuring easy operation
- Use suitable sealing material (e.g., PTFE tape) on threaded connections
- Install valve into pneumatic system using appropriate tools
- Ensure secure installation to prevent air leakage
- Connect control lines to corresponding ports:
- Port P: Supply port
- Port A/B: Outlet ports
- Port R/S: Exhaust ports
-
Post-installation Check
- Inspect all connections for tightness
- Ensure valve position in system is protected from external mechanical damage
- Verify operating lever moves freely without binding
Pre-installation Preparation
- Ensure air supply pressure is within the valve's operating pressure range
- Verify air supply is filtered (40μm or finer)
- Check valve model and specifications match system requirements
Installation Process
- Select appropriate installation location ensuring easy operation
- Use suitable sealing material (e.g., PTFE tape) on threaded connections
- Install valve into pneumatic system using appropriate tools
- Ensure secure installation to prevent air leakage
- Connect control lines to corresponding ports:
- Port P: Supply port
- Port A/B: Outlet ports
- Port R/S: Exhaust ports
Post-installation Check
- Inspect all connections for tightness
- Ensure valve position in system is protected from external mechanical damage
- Verify operating lever moves freely without binding

Operation Guide
-
Basic Operation
- Lever operation: Directly toggle the operating lever to change valve state
- 2-position type: Lever has two stable positions corresponding to the valve's two operating states
- 3-position type: Lever has three stable positions, with the middle position typically being closed center, pressure center, or exhaust center
- Apply moderate operating force to ensure smooth operation, avoiding excessive force
-
Status Indication
- Determine valve operating status based on lever position
- Monitor system pressure changes to ensure proper valve operation
-
Operation Precautions
- Avoid excessive force during operation to prevent valve damage
- Regularly check for smooth valve operation
- Avoid use in environments with vibration or impact; if unavoidable, take protective measures
Basic Operation
- Lever operation: Directly toggle the operating lever to change valve state
- 2-position type: Lever has two stable positions corresponding to the valve's two operating states
- 3-position type: Lever has three stable positions, with the middle position typically being closed center, pressure center, or exhaust center
- Apply moderate operating force to ensure smooth operation, avoiding excessive force
Status Indication
- Determine valve operating status based on lever position
- Monitor system pressure changes to ensure proper valve operation
Operation Precautions
- Avoid excessive force during operation to prevent valve damage
- Regularly check for smooth valve operation
- Avoid use in environments with vibration or impact; if unavoidable, take protective measures

Maintenance
-
Daily Inspection
- Check for air leakage
- Verify smooth operation of lever
- Inspect connections for tightness
-
Regular Maintenance
- Every 3 months: Clean external surfaces, check connection tightness
- Every 6 months: Inspect internal seal condition, replace if necessary
- Annually: Perform comprehensive inspection including disassembly to check internal component wear
-
Maintenance Precautions
- Always disconnect air supply and relieve pressure before maintenance
- This valve requires no additional lubrication
- Use original factory parts when replacing seals
- Take care not to damage sealing surfaces when reinstalling after maintenance
Daily Inspection
- Check for air leakage
- Verify smooth operation of lever
- Inspect connections for tightness
Regular Maintenance
- Every 3 months: Clean external surfaces, check connection tightness
- Every 6 months: Inspect internal seal condition, replace if necessary
- Annually: Perform comprehensive inspection including disassembly to check internal component wear
Maintenance Precautions
- Always disconnect air supply and relieve pressure before maintenance
- This valve requires no additional lubrication
- Use original factory parts when replacing seals
- Take care not to damage sealing surfaces when reinstalling after maintenance

Safety Precautions
- Always disconnect air supply and relieve pressure before installation or maintenance
- Do not exceed the valve's maximum operating pressure
- Avoid use in environments with corrosive gases or liquids unless specifically designed for such use
- Do not disassemble valve unless proper knowledge and tools are available
- Immediately stop using valve if abnormalities are detected and perform inspection
- Regularly check valve operating status to ensure safe and reliable operation

Our Commitments & Core Advantages
1. We are a factory specializing in the production of pneumatic components, with mature manufacturing experience and technology.
2. We manufacture and supply a wide range of series and specifications of air cylinders and pneumatic components, providing you with flexible options.
3. We can undertake the customization business of various pneumatic components according to the specific needs of customers.
We adhere to the service concept of efficiency and thoughtfulness, making you feel comfortable throughout the cooperation process, just as smooth as cooperating with a close friend.











