PPH Air Release Valve
A PPH Air Release Valve is a type of valve made from Polypropylene Homopolymer (PPH) that is designed to automatically release trapped air from pipelines and fluid systems. The PPH Air Release Valve helps maintain smooth fluid flow by preventing air pockets that can cause pressure loss, flow disruption, or damage to the piping system. The valve works through an internal float mechanism that detects the presence of air inside the pipeline. When air accumulates, the float drops and the valve opens to release the trapped air. Once the air is expelled and the liquid level rises again, the float closes the valve to prevent leakage.
PPH Air Release Valves are widely used in water treatment plants, chemical processing industries, irrigation systems, and industrial pipelines, where removing trapped air is essential for efficient and safe system operation. In pressurized pipe systems, an automatic air release valve is essential. The purpose of a PPH air release valve, also known as an air relief valve, is to relieve trapped air that collects at each maximum height of a full pressurized tube. As the internal lever system increases the temp force to exceed the internal pressure, an air release valve may open against the internal pressure.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PPH Air Release Valve Details
*Technical Diagram
*Technical Data
| Parameter / Feature | Details & Specifications |
| Product Type | Air Release Valve / Air Vent Valve |
| Material | Polypropylene Homopolymer (PPH) |
| Operation | Automatic (Float-operated mechanism) |
| Function | Releases trapped air / gases from pipelines |
| Size Range | DN15 to DN50 (½” to 2”) |
| Pressure Rating | PN10 / PN16 |
| Temperature Range | 0°C to +95°C |
| End Connections | Threaded (BSP/NPT) / Flanged (optional) |
| Seal Material | EPDM / FKM (Viton) |
| Standards | DIN 8078, ISO 15493, ASTM D4101 |
| Working Medium | Water, chemicals, acids, alkalis |
| Installation | Installed at high points of pipeline |
| Flow Mechanism | Float rises/falls to open/close vent |
| Body Construction | Single-piece / compact molded body |
| Float Type | Lightweight plastic float (automatic operation) |
| Internal Mechanism | Lever & float system |
| Surface Finish | Smooth, corrosion-resistant |
| Color | Grey / Natural / Beige |
| Weight | Lightweight (easy handling) |
| Sealing System | O-ring + seat sealing (leak-proof) |
| Design | Compact and space-saving |
| Mounting | Vertical installation preferred |
| Maintenance | Easy access, low maintenance |
- Automatic Air Release Mechanism
The valve is designed with an internal float system that automatically releases trapped air from the pipeline during operation. - High Chemical Resistance
Manufactured from Polypropylene Homopolymer (PPH), the valve offers excellent resistance to corrosive chemicals, acids, and alkalis. - Corrosion-Resistant Construction
The PPH body ensures the valve does not rust or corrode, making it suitable for harsh industrial and chemical environments. - Lightweight Design
Compared to metal valves, PPH air release valves are lightweight, making them easy to handle, transport, and install. - Leak-Proof Sealing
The valve is equipped with high-quality seals and seats that provide tight sealing and prevent leakage during operation. - Durable and Long Service Life
The strong thermoplastic construction ensures long-term durability and reliable performance in demanding applications. - Low Maintenance Requirement
Due to its simple internal mechanism and corrosion-resistant material, the valve requires minimal maintenance. - Pressure Control Support
By releasing trapped air, the valve helps maintain stable pressure and smooth fluid flow in the pipeline. - Multiple Connection Options
Available with threaded or flanged connections, allowing compatibility with different piping systems. - Wide Industrial Applications
Commonly used in water treatment plants, chemical processing systems, irrigation networks, and industrial pipelines for efficient air management.
| Valve Size (Typical) | Pressure Rating | Pressure (Bar) | Pressure (PSI) | Notes |
| DN15 (½″) | PN10 | 10 Bar | ~145 PSI | Common for small pipelines |
| DN20 (¾″) | PN10 | 10 Bar | ~145 PSI | Used in water and chemical lines |
| DN25 (1″) | PN10 | 10 Bar | ~145 PSI | Standard industrial size |
| DN32 – DN50 (1¼″ – 2″) | PN10 | 10 Bar | ~145 PSI | Larger pipeline systems |
Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.
Benefits of Using PPH Air Release Valve
Efficient Removal of Trapped Air
The valve automatically releases trapped air from pipelines, preventing air pockets that can disrupt fluid flow and reduce system efficiency.
Improves Pipeline Performance
By removing accumulated air, the valve helps maintain smooth and continuous fluid flow, improving the overall performance of the piping system.
Excellent Chemical Resistance
Made from Polypropylene Homopolymer (PPH), the valve offers strong resistance to corrosive chemicals, acids, and alkalis, making it suitable for chemical processing environments.
Corrosion-Free Material
PPH material does not rust or corrode like metal valves, ensuring long service life even in aggressive industrial conditions.
Automatic Operation
The valve operates automatically using an internal float mechanism, eliminating the need for manual air release.
Lightweight and Easy Installation
Compared to metal valves, PPH valves are lightweight, making them easier to handle, install, and maintain.
Prevents Pipeline Damage
By releasing trapped air, the valve helps reduce the risk of pressure surges, vibrations, and potential damage to pipelines and equipment.
Low Maintenance Requirement
The simple design and corrosion-resistant material result in minimal maintenance and reliable operation.
Energy Efficiency
Proper air removal improves pump efficiency and reduces energy consumption in fluid transport systems.
Suitable for Multiple Industries
Commonly used in water treatment plants, chemical industries, irrigation systems, and industrial piping networks where air removal is essential for system efficiency.
Types of PPH Air Release Valve
Single Orifice PPH Air Release Valve
This type has one air outlet opening that releases small amounts of trapped air from the pipeline during normal system operation. It is commonly used in water supply and irrigation systems.
Double Orifice PPH Air Release Valve
This valve contains two openings (large and small orifice). The large orifice releases a large volume of air during pipeline filling, while the small orifice releases small trapped air during operation. It is widely used in industrial and water treatment pipelines.
Combination PPH Air Release Valve
A combination air valve performs both air release and vacuum relief functions. It removes trapped air during operation and allows air to enter the pipeline when it is drained, preventing pipe collapse.
Threaded End PPH Air Release Valve
This type comes with threaded connections for easy installation and removal in small and medium-sized piping systems.
Flanged End PPH Air Release Valve
The valve is designed with flanged connections, making it suitable for large pipelines and heavy industrial applications where strong and secure connections are required.
Automatic PPH Air Release Valve
This valve works with an internal float mechanism that automatically releases air without manual operation, ensuring continuous and efficient pipeline performance.
Applications of PPH Air Release Valve
Process Industry
High Purity Applications
Electronic Industry
Electrical Industry
Semi-conductors Industry
Pharmaceutical Industry
Solar power panels
Sugar Industry
Paper & Pulp Industry
Nuclear Power Industry
Automotive Industry
DI water plants
Why Choose Petron Thermoplast?
Petron Thermoplast is your go to solution for the PPH Air Release Valve when you need precise flow control in industrial applications. They create higher pressure drops than some alternatives, but that tortuous flow path is exactly what gives them their incredible throttling capability.
Use Petron Thermoplast PPH Air Release Valve when:
