UPVC Diaphragm Valve
UPVC diaphragm valves are an essential part of many industrial processes, which are commonly used in applications where precise control of fluid flow is required. These valves consist of a flexible diaphragm that separates the valve body from the fluid being controlled, and they are available in a variety of materials, sizes, and configurations. In optical media and other applications demanding smaller and lighter weight dispense valves, the UPVC Diaphragm Valves deliver drip-free coating and uniform shot-to-shot bonding.
The UPVC diaphragm valve controls the utilization in the pharmaceutical filling system and has the benefit of having a 150 million life opening and shutting time at 3 bar operating pressure. Liquid sampling, biological systems, labs, and other initiatives, all types of UPVC diaphragm valve parts. The innovative design of UPVC Diaphragm Valves removes the trapped air and bubbles.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
UPVC Diaphragm Valve Details
DN: Nominal Diameter Size
D: Flange Outer Diameter
b: Flange Thickness Dimension
k: Bolt Circle Diameter
h: Number of Holes
d: Pipe Outside Diameter
H: Total Valve Length
H1: Handwheel Outer Diameter
B: Center to Top
B1: Center to Bottom
| Size (DN) | Size (Inch) | D | b | k | h | d | Weight (kg) |
| 15 | 1/2″ | 95 | 14 | 65 | 45 | 14 | 0.8 |
| 20 | 3/4″ | 105 | 16 | 75 | 50 | 14 | 1.0 |
| 25 | 1″ | 115 | 16 | 85 | 52 | 14 | 1.2 |
| 32 | 1 1/4″ | 140 | 18 | 100 | 55 | 18 | 1.9 |
| 40 | 1 1/2″ | 150 | 18 | 110 | 58 | 18 | 2.3 |
| 50 | 2″ | 165 | 20 | 125 | 62 | 18 | 3.1 |
| Parameter | Technical Details |
| Valve Type | Diaphragm Valve (Weir / Straight-through type) |
| Body Material | uPVC (Unplasticized Polyvinyl Chloride) |
| Diaphragm Material | EPDM / PTFE / Nitrile (application dependent) |
| Bonnet Material | uPVC |
| Stem Material | Stainless Steel (SS 304/316) or uPVC |
| Seat Type | Soft seat (integral with diaphragm) |
| End Connections | Flanged / Threaded / Solvent Cement |
| Size Range | Typically 15 mm to 200 mm (½” to 8”) |
| Pressure Rating | PN6 / PN10 (size & temperature dependent) |
| Operating Temp | 0°C to 60°C (uPVC body) |
| Working Media | Water, chemicals, slurry, corrosive fluids |
| Flow Control | Excellent throttling capability |
| Leakage Class | Bubble-tight shutoff |
| Actuation Type | Manual (handwheel) / Pneumatic / Electric |
| Installation Pos. | Any orientation (preferably upright) |
| Maintenance | Easy diaphragm replacement, low maintenance |
| Corrosion Res. | Excellent (non-metallic body) |
| Chemical Res. | High (depends on diaphragm material) |
| Weight | Lightweight compared to metal valves |
| Standards | As per ISO / DIN / ASTM |
Non-corrosive uPVC body
They are resistant to rust, scaling, and most chemicals.
Flexible UPVC diaphragm sealing
They ensure the bubble-tight shutoff and zero leakage.
- Excellent chemical resistance
These are suitable for acids, alkalis, salts, and corrosive fluids (diaphragm dependent)
- Smooth internal flow path
Minimize the pressure drop and prevent the material buildup.
- Isolated operating mechanism
Upvc diaphragm is a water fluid completely separated from the stem and actuator, improving safety.
- Low-maintenance design
The upvc diaphragm valve has fewer moving parts; diaphragm replacement is simple and fast.
- Good throttling capability
Allow the accurate flow control in addition to on/off service
- Lightweight construction
Easy handling and installation with reduced pipe support
- Wide size and pressure range
They are available in multiple sizes and pressure ratings (PN6 / PN10)
- Multiple actuation options
Manual, pneumatic, or electric operation
- Hygienic and non-toxic
These are suitable for potable water and sensitive process applications.
- Quiet operation
No vibration or water hammer during operation.
| Valve Size (mm / inch) | PN6 (bar) | PN10 (bar) | PN16 (bar) | Notes / Remarks |
| 15–50 mm (½”–2″) | 6 | 10 | 16 | Standard small-size valves |
| 65–100 mm (2½”–4″) | 6 | 10 | 16 | Suitable for medium pipelines |
| 125–150 mm (5″–6″) | 6 | 10 | 16 | Check manufacturer for exact PN16 rating |
| 200 mm (8″) | 6 | 10 | 16 | Pressure rating may reduce at higher temperature |
| Temperature Derating | 0–20°C: Full PN | 20–40°C: ~10% ↓ | 40–60°C: ~20% ↓ | uPVC body is sensitive to high temperature |
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 UPVC Diaphragm Valve
Excellent corrosion resistance
The UPVC diaphragm valve is immune to rust and corrosion, making it ideal for water and chemical applications.
Superior chemical compatibility
They are suitable for handling acids, alkalis, salts, and other aggressive fluids (depending on diaphragm material).
Bubble-tight shutoff
Their flexible diaphragm ensures zero leakage, even at low pressure.
Low maintenance
Upvc diaphragm is simply designed with fewer moving parts, and the diaphragm can be easily replaced without removing the valve.
Hygienic & contamination-free
No metal contact with fluid; suitable for potable water and sensitive processes.
Good flow control & throttling
They provide the precise flow of regulation to compare with many other valve types.
Lightweight construction
Upvc diaphragm is easier to handle and reduces the installation time, and has lower support requirements.
Long service life
They are resistant to scaling, pitting, and environmental degradation.
Safe for hazardous fluids
Upvc diaphragm isolates the operating mechanism from the fluid, improving safety.
Quiet operation
No vibration or water hammer during the operation.
Cost-effective solution
Upvc diaphragm has a lower initial cost and reduces the maintenance compared to the metal diaphragm valves.
Types of UPVC Diaphragm Valve
1. Weir Type UPVC Diaphragm Valve
- Raised the weir (saddle) inside the body
- They required less diaphragm movement.
- Also, as a longer diaphragm life
- Better for the clean fluids and moderate throttling
- Most commonly used in type.
2. Straight-Through (Full Bore) UPVC Diaphragm Valve
- Flat and unobstructed flow path
- They are ideal for slurry, viscous, or fluid with suspended solids.
- Lower pressure drop
- Required more diaphragm travel
3. Manual UPVC Diaphragm Valve
- Operating the usage of a handwheel
- Simple and economical
- They are suitable for on/off and throttling service
4. Pneumatically Actuated UPVC Diaphragm Valve
- Using compressed air for operation
- Fast response and remote control
- Ideal for automation and process control systems
5. Electrically Actuated UPVC Diaphragm Valve
- They are operated by an electric actuator.
- These are suitable for precise control and automation.
- Used in industrial and dosing applications
6. Lined UPVC Diaphragm Valve
- UPVC diaphragm valve body with special diaphragm lining (PTFE/EPDM)
- Enhancing the chemical resistance
- Used in aggressive chemical environments
Why Choose Petron Thermoplast?
The Petron Thermoplast UPVC diaphragm valve is a versatile and reliable type of valve that is used in a variety of industrial applications. They offer precise over fluid flow control, are easy to maintain, and are available in a variety of materials and configurations. While they may not be suitable for use in high-temperature or high-pressure applications.
They are an ideal choice for applications requiring precise control over fluid flow and low maintenance requirements. When it comes to industrial-grade systems, the choice of the right manufacturer is as important as the material itself. Petron Thermoplast has earned a reputation as a trusted global leader in the field of UPVC diaphragm valves and industrial flow solutions. Our products are known for precision, performance, and durability, designed to meet the most demanding industry standards across the chemical and infrastructure sectors.
