Note: This diaphragm valve cannot be used for drinking water.
The key component of the PVC diaphragm valve is a flexible diaphragm that separates the valve's body from the flow path. This diaphragm is made of CPVC or UPVC which can withstand corrosive or acidic substances.
Specification
| Model |
CCHN-FDV-DN25 |
| Size |
1 inch (DN25) |
| Structure Type |
Flanged Type |
| Diaphragm Valve Assembly |
Parts |
Material |
| Diaphragm |
PTFE |
| Film |
EPDM |
| Valve Body |
UPVC, CPVC |
| Valve Plate |
UPVC, CPVC, Steel, Stainless Steel |
| Cover Limit |
AS |
| Stud |
Steel, Stainless Steel |
| Retaining Nut |
FRPP |
| Washer |
FRPP |
| Wheel |
Alloy Material |
| Platen |
Steel, Stainless Steel |
| Double-Headed Stud and Nut |
Steel, Stainless Steel |
| Bonnet |
UPVC, CPVC |
| Yoke Nut |
Ht300 Steel |
| Stem |
Steel, Stainless Steel |
Dimension (Unit: mm)

| Size |
Valve Body Material |
d |
D |
L |
h |
n-φ |
| 1 inch (DN25) |
UPVC |
86 |
117 |
146 |
19 |
4-φ14 |
| CPVC |
86 |
117 |
147 |
19 |
4-φ14 |
Note: The above dimensions are for reference only, please refer to the actual product.
Detail

Working Pressure
| Size |
Working Pressure (MPa) |
| UPVC |
CPVC |
| 20~40℃ |
41~60℃ |
61~80℃ |
0~40℃ |
41~60℃ |
61~90℃ |
| 1/2" (DN15) |
0.8 |
0.8 |
0.7 |
0.7 |
0.7 |
0.6 |
| 3/4" (DN20) |
0.8 |
0.8 |
0.7 |
0.7 |
0.7 |
0.6 |
| 1" (DN25) |
0.8 |
0.8 |
0.7 |
0.7 |
0.7 |
0.6 |
| 1-1/4" (DN32) |
0.7 |
0.7 |
0.6 |
0.7 |
0.7 |
0.6 |
| 1-1/2" (DN40) |
0.7 |
0.7 |
0.6 |
0.7 |
0.7 |
0.5 |
| 2" (DN50) |
0.7 |
0.7 |
0.6 |
0.7 |
0.7 |
0.5 |
| 2-1/2" (DN65) |
0.7 |
0.7 |
0.6 |
0.7 |
0.7 |
0.5 |
| 3" (DN80) |
0.7 |
0.7 |
0.6 |
0.7 |
0.7 |
0.5 |
| 4" (DN100) |
0.7 |
0.7 |
0.6 |
0.7 |
0.6 |
0.5 |
| 5" (DN125) |
0.5 |
0.5 |
0.4 |
0.5 |
0.5 |
0.4 |
| 6" (DN150) |
0.5 |
0.5 |
0.4 |
0.5 |
0.4 |
0.3 |
| 8" (DN200) |
0.3 |
0.3 |
0.2 |
0.5 |
0.3 |
0.25 |
| 10" (DN250) |
0.3 |
0.3 |
0.2 |
0.3 |
0.3 |
0.2 |
Tips: Flanged diaphragm valve advantages
Flanged diaphragm valves offer several advantages in various industrial applications. Their design features a flexible diaphragm that acts as a barrier between the process fluid and the valve components, providing numerous benefits:
- Exceptional Sealing: Diaphragms ensure a tight and reliable seal, preventing leakage and cross-contamination. This is particularly important in industries where purity and sterility are critical, such as pharmaceuticals or food production.
- Corrosion Resistance: Diaphragm valves can be made from materials that are highly resistant to corrosion, making them suitable for handling aggressive chemicals and corrosive fluids.
- Minimal Maintenance: Their simple construction minimizes the need for maintenance, resulting in reduced downtime and cost savings.
- Precise Flow Control: Diaphragm valves offer excellent throttling capabilities, allowing for precise control over flow rates, making them ideal for applications requiring accurate dosing or control.
- Biocompatibility: In the medical and biotech industries, these valves are suitable for handling sensitive or biocompatible fluids due to their diaphragm materials.
- Reduced Fouling: The smooth, obstruction-free flow path minimizes the risk of fouling and clogging, ensuring consistent performance.
- Versatility: Flanged connections make installation and integration into existing systems straightforward.