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WENK Pneumatic 4HV Series Hand Valve

The 4HV Series Hand Rotary Valve by WENK Pneumatic is a high-performance manual control valve designed for precise pneumatic system regulation. Available in 4/2 way and 4/3 way configurations, this valve offers smooth operation with excellent tactile feedback and accurate positioning.

Featuring a large effective flow area that minimizes pressure loss, the 4HV Series supports various port sizes from 1/8" to 3/4" and multiple thread types (PT, G, NPT) for versatile installation. Its aluminum alloy construction ensures durability while maintaining a lightweight design.

Suitable for panel or body mounting, this valve excels in industrial automation, packaging machinery, and conveyor systems. With a working pressure range of 0-1.0MPa and temperature tolerance from -20°C to 70°C, the 4HV Series delivers reliable performance in diverse operating environments.

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Product Detail

Model		4HV2□□-06	4HV2□□-08	4HV3□□-06	4HV3□□-08	4HV4□□-06	4HV4□□-08
Working Media		Clean air
Position		4/2 Port，4/3 Port
Port Size		G1/8	G1/4	G1/4	G3/8	G1/2	G3/4
Effective Sectional Area(mm²)		14(0.78)	16(0.89)	30(1.67)	33(1.83)	88(4.89)	95(5.27)
Working Pressure Range		1.0MPa
Proof Pressure		1.5MPa
Working Temperature Range		0℃~60℃
Operation Angle		90℃
Material	Body	Aluminum Alloy
	Seal	Nylon

4HV Series Hand Rotary Valve User Guide

1. Product Introduction

The WENK Pneumatic 4HV Series Hand Rotary Valve is a manually operated pneumatic directional control valve that controls airflow direction through handle rotation. This series features:

Smooth operation with excellent tactile feedback and precise positioning
Large effective flow area minimizing pressure loss
Versatile mounting options (panel or body mount)
Multiple port sizes and thread types available
Suitable for various pneumatic control systems

2. Technical Specifications

Working medium: Compressed air filtered through a 40μm filter

Working pressure range: 0~1.0MPa

Proof pressure: 1.5MPa

Working temperature range: -20~70°C

Operation method: Manual rotation

Position types: 4-port 2-position, 4-port 3-position

Port sizes: 1/8", 1/4", 3/8", 1/2", 3/4"

Thread types: PT, G, NPT

Effective flow area:

14mm² (Cv=0.78)

16mm² (Cv=0.89)

30mm² (Cv=1.67)

33mm² (Cv=1.83)

88mm² (Cv=4.89)

95mm² (Cv=5.27)

Operating angle: 90° (45° for 4-port 3-position)

Body material: Aluminum alloy

3. Installation Steps

Determine the installation location and method (panel mount or body mount)

Prepare appropriate mounting accessories based on the installation method

Panel mounting:

Insert the valve into the panel opening

Secure the valve with the provided nut

Ensure the valve is firmly installed without looseness

Body mounting:

Fix the valve to the mounting surface using bolts

Ensure the mounting surface is flat and the valve is vertical

Pneumatic connection:

Identify port functions (P: Supply, A/B: Output, R/S: Exhaust)

Use appropriate sealing material (e.g., Teflon tape) on threaded connections

Connect ports according to the pneumatic circuit diagram

Ensure connections are secure and leak-free

4. Operation Guide

4.1 4-port 2-position Hand Rotary Valve

Handle position "0": Initial position, air circuit status depends on specific model

Handle rotated 90° to position "1": Circuit switched, P→A connected, B→R connected

Handle rotated 90° to position "2": Circuit switched, P→B connected, A→R connected

4.2 4-port 3-position Hand Rotary Valve

Handle position "0": Middle position, all ports blocked (closed center)

Handle rotated 45° to position "1": Circuit switched, P→A connected, B→R connected

Handle rotated 45° to position "2": Circuit switched, P→B connected, A→R connected

4.3 Operation Precautions

Rotate the handle smoothly, avoiding excessive force

Confirm accurate positioning after handle rotation

Avoid frequent switching under pressure to prevent shortened valve life

If equipped with a locking device, lock the handle position after operation

5. Maintenance

Regular inspection:

Weekly: Check valve exterior for damage

Monthly: Inspect connections for leaks

Quarterly: Verify operational performance for smooth switching

Cleaning:

Clean the valve exterior with dry compressed air

For internal contamination, disassemble and clean (professional operation required)

Avoid using corrosive cleaning agents

Lubrication:

Generally no lubrication required

If lubricated air is used, ISO VG32 or equivalent grade oil is recommended

Lubrication frequency depends on operating environment, typically quarterly

Storage:

Clean the valve and apply anti-rust oil for long-term storage

Store in a dry, ventilated environment free from corrosive gases

Avoid direct sunlight and high-temperature environments

6. Safety Precautions

Always shut off air supply before installation and maintenance

Do not exceed the rated pressure

Avoid use in environments with corrosive gases, dust, or moisture unless specially protected

Wear appropriate protective equipment during operation

Immediately stop use and inspect if abnormalities are detected

Repairs should be performed by qualified personnel

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.

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