Two Functions, One Valve
Switch between overpressure relief and back-pressure control, cutting spare-parts variety.
GB (China) CPVC/UPVC/PVDF/PP双由令DN15~DN65安全/背压两用
CPVC/UPVC/PVDF/PP · Relief or Back-Pressure
Dual-Union Safety / Back-Pressure Valve
CPVC/UPVC/PVDF/PP · Relief or Back-Pressure
A dual-union valve that works as either a safety valve (automatic relief on overpressure) or a back-pressure valve (maintaining system back-pressure). Union ends at both sides allow quick removal for maintenance. Available in CPVC, UPVC, PVDF and PP.
Key Specifications
| Material | CPVC / UPVC / PVDF / PP（可选） |
| Function | Safety valve (overpressure relief) / back-pressure valve, one valve two functions |
| Connection | Dual union (both ends removable) |
| Application | Overpressure protection and back-pressure control for corrosive-media lines |
Dimensional Data
| DN (mm) | L Length | H Height | D Body OD | d Bore | z Center | h Opening |
|---|---|---|---|---|---|---|
| 15 | 166 | 154 | 82 | 20 | 18 | 27 |
| 20 | 170 | 173 | 82 | 25 | 21 | 27 |
| 25 | 212 | 173 | 107 | 32 | 26 | 35 |
| 32 | 226 | 173 | 107 | 40 | 28.5 | 35 |
| 40 | 292 | 225 | 148 | 50 | 37 | 58 |
| 50 | 305 | 225 | 148 | 63 | 37 | 58 |
| 65 | 390 | 225 | 148 | 75 | 42 | 58 |
| For more sizes and specifications, please contact our customer service or email info@mhf-pipe.cloud | ||||||
All dimensions in millimeters (mm), for reference only. Actual dimensions prevail.
Product Features
✦
✦
Quick-Release Union Ends
Union ends at both sides let you remove the valve without cutting the pipe.
✦
Four Materials
Choose CPVC, UPVC, PVDF or PP to suit media corrosiveness and temperature.
Applications
Bulk Orders · Custom Specs · Technical Consulting
Inquire Now →Negotiable MOQ · Fast delivery · 10-20% price advantage
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