UPVC Diaphragm Valve
A UPVC Diaphragm Valve is a linear motion valve designed to control the flow of liquids by regulating a flexible diaphragm that comes into contact with a weir or saddle to stop or modulate flow. Manufactured from Unplasticized Polyvinyl Chloride (UPVC), this valve is especially suitable for highly corrosive or abrasive media. It is widely used in chemical processing, water treatment, and pharmaceutical industries due to its excellent chemical resistance and contamination-free flow path.
UPVC Diaphragm Valve
- Excellent Chemical Resistance: Suitable for acids, alkalis, and other aggressive fluids.
- Non-Metallic Construction: Prevents corrosion and ensures long service life.
- Leak-Proof Operation: Diaphragm ensures tight shut-off and isolation.
- Flow Regulation Capability: Allows for throttling and precise flow control.
- Maintenance-Friendly Design: Easy to service with minimal tools.
- Contamination-Free: Ideal for high-purity and clean fluid applications.
- Flexible Installation: Can be mounted in vertical or horizontal orientations.
Technical Details of UPVC Diaphragm Valve
| Parameter | Specification |
|---|---|
| Body Material | UPVC (Unplasticized Polyvinyl Chloride) |
| Diaphragm Material | EPDM / PTFE / Viton |
| Size Range | ½” to 4” (15 mm to 110 mm) |
| Connection Types | Socket (Solvent Weld), Threaded (BSP/NPT), Flanged |
| Operating Pressure | Up to 6 bar (90 psi) |
| Temperature Range | 0°C to 60°C (32°F to 140°F) |
| Operation Method | Manual Handwheel / Pneumatic Actuation |
| Standards Compliance | ASTM D1784, ISO, DIN |
| d | DN | R1 | PN | B1 | E | H | H1 |
|---|---|---|---|---|---|---|---|
| 1/2" | 15 | 1" | 10 | 25 | 41 | 143 | 80 |
| 3/4" | 20 | 1" 1/4 | 10 | 30 | 50 | 167 | 80 |
| 1" | 25 | 1" 1/2 | 10 | 33 | 58 | 180 | 80 |
| 1" 1/4 | 32 | 2" | 10 | 30 | 72 | 208 | 80 |
| 1" 1/2 | 40 | 2" 1/4 | 10 | 35 | 79 | 234 | 120 |
| 2" | 50 | 2" 3/4 | 10 | 46 | 98 | 272 | 120 |
d – Pipe Outside Diameter (or Nominal Pipe Size in Inches)
DN – Diameter Nominal (Standard Metric Pipe Size)
R1 – Reduced Size / Branch Size (Reducer dimension)
PN – Pressure Nominal (Pressure Rating, in bar)
B1 – Body Length / Base Dimension
E – Engagement Length / Socket Depth
H – Total Height
H1 – Height to Branch / Secondary Height

Customization & Processing Options
Customizations Option Available for UPVC Diaphragm Valve
At Petron Thermoplast, we offer customized PVDF fittings to meet your specific system requirements.
Customization options include:
- Tailor-made dimensions and wall thicknesses
- Custom-molded and machined PVDF fittings
- Pre-fabricated manifolds and assemblies
- Choice of connection type (butt fusion, socket fusion, or flanged)
- OEM branding or marking options
