Corrosion Resistance: The plastic head offers excellent resistance to corrosion, making these valves ideal for handling aggressive media, including acids, alkalis, and saline solutions.
Lightweight Construction: Being made of plastic, these valves are lighter than their metal counterparts, which facilitates easy installation and handling.
Chemical Compatibility: The plastic material is typically resistant to a wide range of chemicals, reducing the risk of degradation and leaks when used with corrosive fluids.
Angle Seat Design: This design ensures a high flow rate and reduced fluid resistance, providing efficient flow control and minimizing pressure drop across the valve.
Pneumatic Actuation: Like other angle seat valves, these often feature pneumatic actuation for fast response times and compatibility with automated control systems.
Plastic Angle seat valve Datesheet
| Orifice | DN10-DN65 |
| Thread | G3/8"- G2-1/2" |
| Working type | single acting, double acting |
| Valve material | stainless steel 316 |
| Actuator material | plastic |
| Valve core seal | PTFE |
| Valve stem seal | PTFE/FKM |
| Applicable medium | water, liquid, neutral gas, oil water steam, weak acid or weak alkalis solution |
| Medium temperature | -10℃~180℃ |
| Environment temperature | -10℃~60℃ |
| Pattern | NC, NO |
| Viscidity | max.600mm 2/S |
| Installation | any position |
| Controlling medium | air or neutral gas |
| Controlling pressure range | 0.3~1Mpa |
| Liquid Working pressure | 0~1Mpa |
The Plastic Head Angle Seat Valve is a highly efficient pneumatic control valve designed for regulating flow in demanding industrial fluid systems. Engineered for durability, fast response, and stable performance, it is widely used in water treatment, food processing, chemical pipelines, and automated production systems.
With its corrosion-resistant structure and optimized angle seat design, this valve ensures high flow capacity with minimal pressure loss, making it an ideal choice for modern automation environments.
A Plastic Head Angle Seat Valve is a pneumatically actuated valve that uses a piston-driven mechanism to control the opening and closing of a flow channel at an angled seat (usually 45°).
The “plastic head” refers to the actuator housing material, typically made from high-strength engineering plastics such as PA (Polyamide) or PPS, offering excellent resistance to corrosion, moisture, and industrial chemicals.
This structure combines:
High durability metal valve body
Lightweight and corrosion-resistant plastic actuator head
Efficient angled seat flow design
1. Corrosion-Resistant Plastic Actuator Head
The actuator housing is made from reinforced engineering plastic, ensuring strong resistance against:
Chemical corrosion
Humidity and water exposure
Acid and alkaline environments
This makes it ideal for harsh industrial applications.
2. High Flow Efficiency Design
The 45-degree angle seat structure allows:
Smooth fluid passage
Reduced turbulence
Higher flow rate compared to straight valves
3. Fast Pneumatic Response
Equipped with a pneumatic piston actuator, the valve provides:
Rapid opening and closing
Short response time
High cycle durability for automation systems
4. Compact and Lightweight Structure
The plastic head design reduces overall weight, making installation easier and reducing mechanical load on pipelines.
5. Long Service Life
High-quality sealing materials and precision machining ensure:
Low leakage rate
Minimal wear and tear
Extended operational lifespan
Technical Specifications (Typical Range)
Valve Type: Angle Seat Valve
Actuation: Pneumatic (Single/Double Acting Optional)
Body Material: Stainless Steel (SS304 / SS316)
Actuator Head Material: Engineering Plastic (PA / PPS)
Sealing Material: PTFE / FKM / EPDM
Pressure Range: 0–16 bar (varies by model)
Temperature Range: -10°C to 180°C (depending on seal material)
Connection Type: Threaded / Flanged / Welded
This valve is widely used in industrial automation and fluid control systems, including:
Industrial Applications
Chemical processing systems
Water and wastewater treatment
Steam and hot water pipelines
Air and gas control systems
Food & Beverage Industry
Beverage filling machines
Dairy processing lines
CIP (Clean-in-Place) systems
Pharmaceutical Industry
Sterile fluid control
Clean production environments
Biotech processing systems
General Automation Systems
Pneumatic production lines
Packaging machinery
Industrial washing systems
The Plastic Head Angle Seat Valve offers significant improvements over conventional solenoid or globe valves:
Higher flow efficiency with less pressure drop
Better corrosion resistance in aggressive environments
Faster switching speed for automation systems
Lower energy consumption in pneumatic control
More stable performance under continuous operation
Choosing the right control valve directly impacts system efficiency and maintenance costs. This valve is designed to deliver:
Reliable operation in harsh environments
Reduced downtime due to fewer maintenance requirements
Compatibility with automated control systems
Cost-effective long-term performance
It is especially suitable for industries requiring high-frequency switching and clean fluid control.
To ensure optimal performance:
Install according to flow direction markings
Use clean compressed air for actuator operation
Regularly check seals for wear in high-temperature applications
Avoid exceeding rated pressure limits
Ensure proper pipeline alignment to reduce stress
Proper maintenance significantly extends service life and ensures stable operation.
1. What is the function of a plastic head in this valve?
The plastic head serves as the actuator housing, providing corrosion resistance and reducing overall weight while protecting internal pneumatic components.
2. Can it be used for steam applications?
Yes, depending on seal and body material selection, it can handle steam and high-temperature media.
3. Is it suitable for food-grade applications?
Yes, when equipped with food-grade seals and stainless steel body, it is widely used in food and beverage processing.
4. What is the difference between plastic head and aluminum head angle seat valves?
Plastic head valves are lighter and more corrosion-resistant, while aluminum heads offer higher mechanical strength in extreme conditions.
The Plastic Head Angle Seat Valve is a high-performance pneumatic control solution designed for modern industrial systems requiring reliability, efficiency, and corrosion resistance. Its optimized structure, fast response, and wide compatibility make it a preferred choice across multiple industries.
If you are looking for a durable and efficient flow control valve for automated systems, this product offers a balanced combination of performance and cost-effectiveness.
Overall Dimension

Product Details
| Model | Actuator size | A | B | C | D | E | F | H |
| RJQ22P50-10 | 50 | 148 | 157 | G3/8 | 69 | 27 | 63.3 | G1/4 |
| RJQ22P50-15 | 50 | 148 | 157 | G1/2 | 69 | 27 | 63.3 | G1/4 |
| RJQ22P50-20 | 50 | 151 | 161.5 | G3/4 | 75.5 | 32 | 63.3 | G1/4 |
| RJQ22P50-25 | 50 | 172 | 183.5 | G1 | 90.5 | 39 | 39 | G1/4 |
| RJQ22P63-25 | 63 | 213.5 | 209 | G1 | 90.5 | 39 | 39 | G1/4 |
| RJQ22P63-32 | 63 | 213.5 | 227 | G1 1/4 | 117.5 | 50 | 79.5 | G1/4 |
| RJQ22P63-40 | 63 | 213.5 | 227 | G1 1/2 | 117.5 | 55 | 79.5 | G1/4 |
| RJQ22P80-40 | 80 | 229 | 243.5 | G1 1/2 | 117.5 | 55 | 100 | G1/4 |
| RJQ22P63-50 | 63 | 237.5 | 251 | G2 | 137.5 | 70 | 79.5 | G1/4 |
| RJQ22P80-50 | 80 | 256 | 270.5 | G2 | 137.5 | 70 | 100 | G1/4 |