PVDF Pneumatic Actuated Diaphragm Valve
A PVDF Pneumatic Actuated Diaphragm Valve is a type of valve made from PVDF (Polyvinylidene Fluoride) in which a flexible diaphragm controls the flow of fluid, and the valve is operated automatically by a pneumatic (air-powered) actuator. It is specifically designed for handling corrosive, abrasive, or sterile fluids in industrial and chemical processes.
The PVDF Pneumatic Actuated Diaphragm Valve is a high-performance, corrosion-resistant valve designed for automated flow control in aggressive chemical and ultra-pure fluid applications. The valve offers superior chemical resistance and thermal stability. It features a pneumatic actuator that allows for efficient remote operation, making it ideal for use in industries such as chemical processing, semiconductor manufacturing, pharmaceuticals, and oil and gas treatment.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PVDF Pneumatic Actuated Diaphragm Valve Details
d – Nominal Bore
DN – Diameter Nominal
PN – Pressure Nominal
B – Overall Height
B1 – Lower Body Height
C – Center to Bottom Distance
C1 – Center to Top Distance
E – End to Center Distance
H – Overall Length/Height
H1 – Top Actuator Height
L – Face to Face Length
R1 – Thread Size
Ra – Surface Roughness
Z – Center to Center Distance / Installation Length
| d | DN | PN | B | B1 | C | C1 | E | H | H1 | L | R | R1 | Ra | Z |
| 20 | 15 | 10 | 148 | 25 | 66 | 24 | 41 | 129 | 97 | 90 | 1″ | 1/4″ | 100 | 25 |
| 25 | 20 | 10 | 151 | 30 | 69 | 24 | 50 | 154 | 97 | 108 | 1″1/4 | 1/4″ | 116 | 32 |
| 32 | 25 | 10 | 159 | 33 | 78 | 24 | 58 | 168 | 97 | 116 | 1″1/2 | 1/4″ | 124 | 40 |
| 40 | 32 | 10 | 163 | 30 | 82 | 24 | 72 | 192 | 97 | 134 | 2″ | 1/4″ | 140 | 50 |
| 50 | 40 | 10 | 207 | 35 | 112 | 24 | 79 | 222 | 126 | 154 | 2″1/4 | 1/4″ | 160 | 63 |
| 63 | 50 | 10 | 245 | 46 | 142 | 24 | 98 | 266 | 157 | 184 | 2″3/4 | 1/4″ | 190 | — |
| Parameter | Typical Value / Range |
| Valve Type | Pneumatic actuated diaphragm valve |
| Body Material | PVDF (Polyvinylidene Fluoride) |
| Diaphragm Materials | EPDM, PTFE / EPDM, FKM / Viton |
| Actuator Types | Double Acting & Spring Return (single acting) |
| Nominal Sizes | DN15 – DN150 (½″ to 6″ typical) |
| Pressure Rating | Up to ~6–10 bar @ 20 °C (depending on size & diaphragm) |
| Air Supply Pressure | ~4–8 bar (5.5–7 bar typical) |
| Temperature Range | ~-10 °C to +120 °C (depending on diaphragm material) |
| Connection Types | Flanged, threaded, socket, true union (varies by model) |
| Actuation Control | Solenoid pilot valves, positioners, limit switches (optional) |
| Mounting Orientation | Can be installed horizontal or vertical |
Corrosion-Resistant Material: PVDF construction provides excellent resistance to acids, alkalis, and solvents.
Pneumatic Automation: Fast and reliable valve actuation using compressed air.
Isolated Flow Path: Diaphragm design isolates the actuator from the process fluid, ensuring purity and safety.
Leak-Proof Design: Ensures tight shut-off with minimal maintenance.
Compact and Lightweight: Space-saving design with easy installation in vertical or horizontal pipelines.
Fail-Safe Options: Available in spring return (fail-open/fail-close) or double-acting configurations.
High Cycle Life: Durable design suitable for continuous process operations.
Ideal for Critical Applications: Suitable for corrosive, high-purity, and hazardous fluid systems.
1️.Typical Working Pressure at 20°C
| Valve Size (DN) | Size (Inch) | Pressure Rating (Bar) | Pressure Rating (PSI) | DIN Rating | ANSI Equivalent |
| DN15 – DN50 | ½” – 2″ | 10 bar | 150 psi | PN10 | Class 150 |
| DN65 – DN100 | 2½” – 4″ | 6 – 10 bar | 90 – 150 psi | PN6 / PN10 | Class 150 |
| DN125 – DN150 | 5″ – 6″ | 6 bar | 90 psi | PN6 | Class 150 |
2️.Temperature vs Pressure Derating (PVDF Material)
| Temperature (°C) | Maximum Working Pressure (Bar) |
| 20°C | 10 bar |
| 40°C | 8 bar |
| 60°C | 6 bar |
| 80°C | 4 bar |
| 100°C | 2 – 3 bar |
| 120°C (Max Limit) | ≤ 2 bar |
3️.Pneumatic Actuator Operating Air Pressure
| Parameter | Typical Range |
| Air Supply Pressure | 4 – 8 bar |
| Recommended Operating Pressure | 5 – 6 bar |
| Maximum Air Pressure | 8 bar |
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 Pneumatic Actuated Diaphragm Valve
1️. Excellent Chemical & Corrosion Resistance
- PVDF body and PTFE/EPDM/FKM diaphragm resist acids, alkalis, and solvents.
- Prevents corrosion and scaling, extending valve life.
- Ideal for aggressive chemical environments in industrial plants.
2️. Pneumatic Automation for Fast, Reliable Operation
- Quick quarter-turn or linear action depending on design.
- High cycle capability for frequent opening/closing.
- Reduces manual labor and increases process efficiency.
- Can integrate with PLCs or control systems for automatic operation.
3️. Fail-Safe Options (Spring Return)
| Actuator Type | Safety Benefit |
| Single Acting (Spring Return) | Automatically moves valve to a “safe” position (Open or Closed) on air failure. |
| Double Acting | Air is required for both opening and closing; allows for more precise control and higher torque. |
4️. Leak-Free Flow Control
- Flexible diaphragm ensures tight shutoff, even in low-pressure applications.
- Prevents backflow and leakage, crucial for hazardous chemicals.
5️. Hygienic and Easy to Maintain
- Smooth interior surfaces prevent sediment build-up.
- Diaphragm replacement is simple without removing the valve body in some designs.
- Suitable for sterile or pharmaceutical applications.
6️. Lightweight & Space-Saving
- PVDF body is lighter than metals .
- Reduces installation effort and support structure requirements.
- Compact design fits tight piping layouts.
7️. Versatile Applications
- Chemical processing
- Oil, gas and wastewater treatment
- Pharmaceutical and food industries
- Corrosive or abrasive media handling
Types of PVDF Pneumatic Actuated Diaphragm Valve
1️. By Valve Body Design
Weir Type
- Diaphragm presses against a raised weir inside the valve body.
- Low pressure drop, ideal for throttling or flow control.
- Suitable for clean or moderately aggressive fluids.
Straight-Through (Full-Bore) Type
- Linear flow path with minimal obstruction.
- Excellent for viscous, abrasive, or solid-laden fluids.
- Allows maximum flow capacity.
2️. By Pneumatic Actuator Type
Single Acting (Spring Return)
- Air pressure opens or closes the valve; spring returns to safe position.
- Provides fail-safe operation in case of air loss.
Double Acting
- Requires air to both open and close.
- Provides higher torque and precise control for larger valves.
3️. By Control Function
| Type | Description | Application |
| On/Off | Fully open or fully closed | Isolation and safety shut-off |
| Modulating (with Positioner) | Partial opening control | Flow regulation, dosing applications |
| Quick Exhaust / Fast-Acting | Rapid closing | Emergency shut-off in critical processes |
4️. By Diaphragm / Sealing Material
| Material | Typical Application |
| EPDM | Water, mild acids & bases |
| PTFE | Strong acids, alkalis, solvents |
| FKM / Viton | Oils, high temperature fluids |
| Silicone | Pharmaceutical or food-grade fluids |
Applications of PVDF Pneumatic Actuated Diaphragm 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 specialises in manufacturing world-class chemical systems for industrial and commercial applications, and PVDF Pneumatic Actuated Diaphragm Valve for industrial applications, including infrastructure projects. As a leading PVDF Pneumatic Actuated Diaphragm Valve manufacturer, Petron Thermoplast also serves the sector through products in different categories. As we exclusively bring Petron Thermoplast PVDF chemical systems to the market, we are the first choice globally for potable chemical applications. Petron Thermoplast’s robust distribution network, combined with best-in-class technology, is set to create a strong & sustainable presence in the chemical Industry.
The core differences of PVDF Pneumatic Actuated Diaphragm Valve lie in their connection method, applicable scenarios, and cost-effectiveness. The former is characterized by its lightweight and low cost, making it suitable for small pipelines and low-pressure conditions; the latter, with its high strength and ease of maintenance, dominates medium to large-scale industrial projects.
