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WENK Pneumatic QTYH High Pressure Regulator

The QTYH series high pressure regulator is a robust pneumatic component designed for precision pressure control in high-pressure systems. Manufactured by WENK Pneumatic, it features a maximum input pressure of 4.0 MPa and adjustable output pressure range of 0.05-3.5 MPa.

Constructed with high-quality aluminum alloy, this regulator maintains stable output pressure despite fluctuations in input pressure and flow rate. It incorporates a spring diaphragm mechanism for reliable pressure reduction and stabilization.

Available in multiple sizes (QTYH-08 to QTYH-25) with connection threads from G1/4" to G1", the QTYH regulator is suitable for various industrial applications including heavy machinery, energy, and chemical processing. Its compact design allows for easy installation in limited spaces.

Equipped with a built-in pressure gauge for real-time monitoring, the QTYH regulator ensures precise pressure control with minimal pressure loss, making it an ideal solution for high-pressure pneumatic systems requiring reliable performance and safety.

product Details

product description

Product Detail

Working Media	Cleaned Air
Working Pressure	0.1~3.0Mpa
Proof Pressure	4Mpa
Working Temperature Range	5℃~60℃
Body Material	Aluminum Alloy

QTYH Series High Pressure Regulator - User Guide

Product Overview

The QTYH series high pressure regulator is a high-performance pneumatic component designed specifically for high-pressure pneumatic systems. It precisely adjusts input high-pressure gas to the required low-pressure output and maintains stable output pressure despite fluctuations in input pressure and flow rate. Featuring a spring diaphragm structure, it provides both pressure reduction and stabilization functions, making it suitable for various industrial high-pressure pneumatic systems.

Technical Parameters:

Type: Spring diaphragm high pressure regulator
Working medium: Compressed air
Maximum input pressure: 4.0 MPa
Output pressure range: 0.05-3.5 MPa
Operating temperature: -5-80°C
Connection thread: G1/4" to G1" (depending on model)
Model specifications: QTYH-08 (G1/4"), QTYH-10 (G3/8"), QTYH-15 (G1/2"), QTYH-20 (G3/4"), QTYH-25 (G1")
Features: High-precision pressure control, aluminum alloy construction, built-in pressure gauge, secondary venting function, high-pressure resistant design

Installation Steps

1. Pre-installation Preparation

Ensure the compressed air system is shut off and depressurized
Clean connecting pipes to remove foreign objects and impurities
Prepare necessary tools: wrench, PTFE tape, etc.
Inspect the pressure regulator for damage and confirm the model meets system requirements

2. Installation Position and Sequence

Installation sequence: In a pneumatic system, the pressure regulator should be installed after the filter
Installation position: Should be installed as vertically as possible (handle facing up or down)
Installation direction: Must be installed according to the "IN" (inlet) and "OUT" (outlet) markings on the valve body

3. Pipe Connection

Use PTFE tape for thread sealing (note: do not allow PTFE tape to enter the pipe interior)
Tighten connections evenly with a wrench, avoiding excessive force that may damage threads
Ensure all connections are secure and tight without leakage
Leave 1.5-2 thread widths at the pipe end, do not over-tighten

4. Mounting Installation

For larger models (QTYH-20 and above), it is recommended to use a dedicated bracket for fixation
Ensure secure installation to avoid vibration effects
Leave sufficient space for operation and maintenance

5. Post-installation Check

Ensure all connections are secure without looseness
Confirm airflow direction matches the markings
Check if the installation position meets requirements
Verify that the pressure gauge is clearly visible

Operation Guide

1. Initial Pressure Setting

Pressure adjustment method:
1. Rotate the adjustment handle counterclockwise to the loosest position (minimum pressure)
2. Slowly open the air supply and observe the pressure gauge reading
3. Rotate the adjustment handle clockwise to adjust the pressure to the desired value
4. After adjustment, the handle can remain in the current position
Precautions:
- Adjust slowly to avoid sudden pressure increases
- The set pressure should not exceed system requirements
- The set pressure should not exceed the regulator's maximum adjustment range
- Input pressure must be at least 0.1MPa higher than output pressure

2. Pressure Adjustment Operation

Increase pressure: Rotate the adjustment handle clockwise
Decrease pressure: Rotate the adjustment handle counterclockwise
Pressure monitoring: Real-time monitoring of output pressure via built-in pressure gauge

3. Operation Check

After starting the system, observe the operation of the pressure regulator
Check if the output pressure is stable at the set value
Inspect all connections for leaks
Confirm the secondary venting function is normal (gas should be exhausted when reducing pressure)

Maintenance

1. Daily Inspection

Regularly check if the output pressure is stable
Verify if the pressure gauge reading is accurate
Inspect all connections for leaks
Keep the valve body clean, avoiding dust and debris accumulation

2. Periodic Maintenance

Cleaning and maintenance:
1. Shut off the air supply and release system pressure
2. Disassemble the pressure regulator (if necessary)
3. Clean the exterior of the valve body with compressed air
4. Inspect the condition of diaphragms and seals
5. Reinstall and test
Maintenance cycle:
- Daily inspection: Once a week
- Cleaning maintenance: Once every 3 months
- Seal replacement: Once every 12 months or as needed
- Comprehensive inspection: Once every 12 months

3. Troubleshooting

Unstable output pressure:
1. Check if the input pressure is stable
2. Inspect if the diaphragm is damaged
3. Check if the valve seat has impurities
4. Inspect if the adjustment spring is fatigued
Unable to reach set pressure:
1. Check if the input pressure is sufficient
2. Verify if the adjustment range matches requirements
3. Check if the valve port is blocked
4. Inspect if the diaphragm is damaged
Pressure leakage:
1. Check if connections are tight
2. Inspect if seals are damaged
3. Check if the valve body has cracks
4. Inspect if the pressure gauge interface is leaking

Precautions

1. Safety Precautions

Always shut off the air supply and release pressure before installation and maintenance
Do not exceed the maximum working pressure of 4.0MPa
Avoid use in high-temperature environments (temperature not exceeding 80°C)
Do not strike or scratch the valve body with sharp objects

2. Usage Limitations

For compressed air systems only
Not suitable for corrosive gas environments
Avoid direct sunlight and strong vibration
Not for use with oxygen or other flammable and explosive gases

3. Repair and Replacement

Use original accessories for maintenance
Follow product manual guidelines for seal replacement
If valve body damage is found, immediately stop use and replace
Conduct pressure testing after maintenance to ensure safety

Frequently Asked Questions

Q1: Where should the QTYH high pressure regulator be installed in a pneumatic system?
A1: It should be installed after the filter, near the pneumatic components requiring stable pressure, preferably in a vertical position.

Q2: How to determine if the pressure regulator is working properly?
A2: After starting the system, observe if the pressure gauge reading remains stable at the set value and if the pressure adjustment responds sensitively.

Q3: Can the QTYH regulator be adjusted while the system is running?
A3: Yes, the QTYH series regulator is designed to allow pressure adjustment during system operation.

Q4: What is the maximum input pressure of the QTYH regulator?
A4: The QTYH series regulator has a maximum input pressure of 4.0MPa and an output pressure range of 0.05-3.5MPa.

Q5: What may cause unstable output pressure of the regulator?
A5: Possible causes include: input pressure fluctuations, damaged diaphragm, impurities on the valve seat, or fatigued adjustment spring.

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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