PVDF Pressure Release Valve
A PVDF Pressure Release Valve (also called a pressure relief valve or safety valve) is a protective device made from Polyvinylidene Fluoride (PVDF) that automatically releases excess pressure from a piping system or tank to prevent damage, leakage, or system failure. The PVDF Pressure Release Valve is designed to protect piping systems and sensitive components from overpressure conditions by automatically releasing excess pressure. Constructed from high purity Polyvinylidene Fluoride (PVDF), it is highly resistant to corrosive chemicals and UV degradation. This PVDF Pressure Release Valve is ideal for applications in chemical processing, oil & gas treatment, and semiconductor industries where system safety and media purity are critical. The PVDF Pressure Release Valve remains closed under normal operating pressure. When the system pressure exceeds a preset limit, the valve opens automatically. It releases fluid (liquid or gas) to reduce pressure. Once pressure returns to safe levels, the valve closes again.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Pressure Release Valve Details
DN: Nominal Diameter (Internal reference).
L: Total overall length (Face-to-face).
H: Total height from the pipe center to the top of the actuator/handle.
D: Outside diameter of the union nuts.
d: Outside diameter of the pipe/socket connection.
z: Laying length (the distance between the pipe stops inside the sockets).
h: Height from the pipe center to the mounting platform
| DN | L | H | D | d | z | h |
| 15 | 170 | 172 | 82 | 20 | 21 | 27 |
| 20 | 170 | 172 | 82 | 25 | 21 | 27 |
| 25 | 212 | 202 | 107 | 32 | 26 | 35 |
| 32 | 226 | 202 | 107 | 40 | 28.5 | 35 |
| 40 | 292 | 259 | 148 | 50 | 37 | 58 |
| 50 | 305 | 259 | 148 | 63 | 37 | 58 |
| Parameter | Details |
| Product Type | Pressure Release Valve (Safety / Relief Valve) |
| Material (Body) | Polyvinylidene Fluoride (PVDF) |
| Internal Components | PVDF / PP / Stainless steel spring (isolated from fluid) |
| Seal Material | EPDM / FPM (Viton) / PTFE |
| Valve Type | Spring-loaded / diaphragm-operated |
| Working Principle | Opens automatically when pressure exceeds set value |
| Function | Protects system from overpressure by releasing excess fluid |
| Construction | Compact, corrosion-resistant, non-metallic wetted parts |
| Connection Type | Threaded / Socket / Flanged (DIN / ANSI) |
| Available Sizes | DN15 to DN50 (½″ to 2″) |
| Pressure Range | Adjustable approx. 0.2 to 10 bar (3–150 PSI) |
| Set Pressure | Factory-set or field adjustable |
| Operating Temperature | -10°C to +120°C |
| Flow Capacity | Depends on valve size and set pressure |
| Mounting Position | Vertical or horizontal installation |
| Flow Direction | Uni-directional (relief direction) |
| Response Type | Automatic (self-actuating) |
| Density (PVDF) | ~1.75 – 1.78 g/cm³ |
| Tensile Strength | ~35 – 50 MPa |
| Chemical Resistance | Excellent (acids, alkalis, solvents, oxidizers) |
| Thermal Stability | High (suitable for elevated temperatures) |
| UV Resistance | Excellent (outdoor suitability) |
| Surface Finish | Smooth internal surface (high purity applications) |
| Leakage Protection | Tight sealing, leak-proof operation |
| Adjustment Mechanism | Spring tension / screw adjustment |
| Maintenance | Low maintenance, simple design |
| Standards Compliance | DIN / ANSI / ISO |
| Applications | Chemical processing, water treatment, storage tanks, dosing systems |
Corrosion Resistant: Made from PVDF for excellent chemical and environmental resistance.
Adjustable Pressure Settings: Can be calibrated to specific relief pressures as per system requirements.
Reliable Overpressure Protection: Safeguards pumps, pipes, and other components from damage.
Compact and Robust Design: Easy to install, even in space-constrained piping setups.
High Purity Material: Suitable for ultra-pure and high-purity fluid handling systems.
Low Maintenance: Non-metallic design minimizes corrosion and scaling, ensuring longevity.
Leak-proof Performance: Precision sealing to ensure reliable and tight operation.
By Operation Mechanism
| Type | Description | Use Case |
| Spring-Loaded Pressure Relief Valve | Uses a spring to hold the valve closed until system pressure exceeds the set point. | Most common: adjustable set pressure for chemical tanks and pipelines |
| Diaphragm-Operated Pressure Relief Valve | Uses a flexible diaphragm to sense pressure and open the valve. | Suitable for low-pressure or precise release applications |
| Pilot-Operated Pressure Relief Valve | Uses a pilot valve to control the main valve opening. | High-flow systems or industrial plants needing precise control |
By Connection Type
| Type | Description | Use Case |
| Threaded (BSP/NPT) | Screwed connection; easy to install and remove | Low-pressure systems or temporary installations where welding isn’t feasible. |
| Socket / Solvent Weld | PVDF piping welded into valve ends; strong and leak-proof | Permanent, high-purity installations (requires specialized heat fusion for PVDF). |
| Flanged Ends | Bolted connection; ideal for larger systems or frequent maintenance | Industrial pipelines where valves must be pulled for service without cutting pipe. |
By Pressure Setting / Range
| Type | Pressure Range | Notes |
| Low-Pressure Release Valve | 0.2 – 3 bar | For small tanks, low-pressure systems |
| Medium-Pressure Release Valve | 3 – 10 bar | Standard industrial applications |
| High-Pressure Release Valve | 10 – 16 bar | Reinforced PVDF valves for high-pressure chemical systems |
By Special Features / Variants
| Variant | Feature / Use |
| Vacuum / Low-Pressure Rated | Suitable for negative pressure or partial vacuum systems |
| Corrosion / High-Purity Version | Optimized for pharma, semiconductor, or high-purity water systems |
| Adjustable Set Pressure | Field-adjustable spring or diaphragm for precise pressure control |
| High-Capacity / Industrial Flow | Handles larger fluid volumes; used in chemical plants or storage tanks |
| Valve Size | Pressure Setting / Adjustable Range | Max Working Pressure @ ~20–25 °C | Unit | Notes |
| Small (e.g., ¼″ – ½″) | Adjustable ~0.2 – 10 bar | ~10 bar (150 psi) | bar/psi | Typical range of smaller PVDF relief valves |
| Medium (e.g., 1″) | Adjustable ~0.4 – 10 bar | ~10 bar (150 psi) | bar/psi | Field‑adjustable spring set to the desired relief pressure |
| Larger (2″) | Adjustable ~0.2 – 10 bar | ~10 bar (150 psi) | bar/psi | Dependent on the diaphragm and spring options |
| High‑capacity PVDF | Variable spring up to ~16 bar | ~16 bar (250 psi) | bar/psi | Rated to ~250 psi @ 21 °C for industrial series |
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 PVDF Pressure Release Valve
1. Excellent Chemical Resistance
- Resistant to strong acids, alkalis, and corrosive chemicals
- Ideal for chemical processing, pharmaceutical, and oil and gas treatment industries
- Prevents valve body degradation and extends service life
2️. High Temperature Capability
- Can operate in temperatures up to ~140°C (pressure derates at high temp)
- Suitable for hot process fluids
3️. Reliable Overpressure Protection
- Automatically releases excess pressure to protect piping, tanks, and equipment.
- Reduces risk of leaks, bursts, or system damage
- Adjustable set pressure allows precise system protection
4️. Lightweight & Easy Installation
- PVDF construction is lighter than metal valves
- Easier to install and maintain in chemical or corrosive environments
- Reduces structural support requirements
5️. Corrosion & UV Resistance
- Resistant to outdoor exposure and UV radiation
- Suitable for aggressive environments without frequent maintenance
6️. Low Maintenance & Long Service Life
- Minimal moving parts, low friction
- PTFE seats and EPDM/FKM O-rings ensure tight sealing
- Fewer replacements and reduced downtime
7️. Purity and Safety
- Low contamination risk for high-purity or sensitive applications
- Common in pharmaceutical, semiconductor, and high-purity chemical systems
Applications of PVDF Pressure Release Valve
Process Industry
High purity applications
Electronic, electrical, & semi-conductors industry
Solar power panels
Sugar Industry
Paper & pulp Industry
Automotive Industry
DI water plant
Pharmaceutical Industry
Nuclear power industry
Why Choose Petron Thermoplast?
At Petron Thermoplast, we specialize in manufacturing precision-engineered PVDF Pressure Release Valves according to global standards.
Our advantages include:
Accurate machining and flat sealing faces
Full range from Class 150 to Class 2500
Materials certified to ASTM, EN, and ISO standards
Optional RTJ, FF, or RF face types
Quick delivery and custom production
Whether for a large infrastructure project or a small-scale pipeline system, Petron Thermoplast is your trusted partner for high quality PVDF Pressure Release Valves.
