Pressure Reducing Backflow Preventer
Pressure Reducing Backflow Preventer is a device designed for the intersection of fire water supply and drinking water pipelines to prevent backflow pollution in water systems.It can strictly restrict the one-way flow of water in pipelines, prevent sewage backflow and siphon backflow water from flowing back into the drinking water system.
Multiple Ends Types:flange,groove,threaded.
Pressure Rating:PN 16.
Working Temperature:0-100℃.
Horizontal installation, or vertical installation equipped with a drain valve and drainage elbow if necessary.The installation location should be conspicuous and at an appropriate height from the ground, in order to detect water leaks or troubles and maintenance in time.
|
No. |
Part |
Material |
|
1 |
Body |
D.I. EN-GJS-500-7 |
|
2 |
Check Valve Spring |
Stainless Steel |
|
3 |
Check Valve Stem |
Stainless Steel 304 |
|
4 |
Bonnet |
D.I. EN-GJS-500-7 |
|
5 |
Circlip |
Stainless Steel 304 |
|
6 |
Check Valve Seat |
Copper Alloy CC331G |
|
7 |
Check Valve Disc |
D.I. EN-GJS-500-7+NBR |
|
8 |
Relief Valve Body |
D.I. EN-GJS-500-7 |
|
9 |
Relief Valve Spring |
Stainless Steel |
|
10 |
Disc Gasket |
NBR |
|
11 |
Relief Valve Disc |
Brass |
|
12 |
Gasket |
EPDM |
|
13 |
Relief Valve Stem |
Stainless Steel 304 |
|
14 |
Relief Valve Bonnet |
D.I. EN-GJS-500-7 |