Series of pressure relief valve is a direct acting diaphragm spring pressure relief valve, which is based on the advantages of similar products abroad, the design and manufacture of. Mainly by the diaphragm, step disc, springs and other parts adjust. Using the diaphragm sensing downstream pressure change valve, change and control valve opening to achieve the function of reducing pressure. By adjusting the spring pressure to set the outlet pressure value.
The product is suitable for increasing the area of the diaphragm, and improve the sensitivity. Pressure relief stable, sensitive. Branch line is suitable for high-rise apartment buildings and residential and residential apartments, home use branch.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact
Part name | Part material |
valve body | Copper alloy |
Valve cover | Copper alloy |
Valve | Copper alloy |
O type circle | Nitrile rubber |
Seal ring | Nitrile rubber |
diaphragm | Clip fabric nitrile rubber |
Regulating spring | 60Si2Mn |
Adjusting bolt | 2Cr13 |
Nominal pressure(Mpa) | 1.0 | 1.6 |
Shell test pressure(Mpa)* | 1.5 | 2.4 |
Seal test pressure(Mpa) | 1.0 | 1.6 |
pressure(Mpa) | 1.0 | 1.6 |
Outlet pressure range(Mpa) | 0.05-0.55 | 0.05-0.8 |
Pressure characteristic deviation(Mpa)△P2P | GB12244-1989 |
Flow characteristic deviation(Mpa)△P2G | GB12244-1989 |
Seepage quantity | 0 |
working temperature | 0℃-80℃ |
*:The shell test does not include the diaphragm and the valve cover.。 |
DN | 15(1/2") | 20(3/4") | 25(1") | 32(1-1/4") | 40(1-1/2") | 50(2") |
Cv | 1 | 2 | 3 | 5 | 8 | 14 |
DN | G | L | H | H |
P2*≤0.55MPa | P2*≤0.8MPa |
15(1/2") | G1/2" | 65 | 75 | 90 | 35 |
20(3/4") | G3-4" | 75 | 85 | 100 | 35 |
25(1") | G1" | 90 | 3 | 115 | 46 |
32(1-1/4") | G1-1/4" | 105 | 130 | 150 | 55 |
40(1-1/2") | G1-1/2" | 120 | 155 | 175 | 65 |
50(2") | G2" | 140 | 175 | 195 | 75 |
*:P2Express export pressure |
DN | G | L | H | H |
P2*≤0.55MPa | P2*≤0.8MPa |
15(1/2") | G1/2" | 65 | 75 | 90 | 35 |
20(3/4") | G3-4" | 75 | 85 | 100 | 35 |
25(1") | G1" | 90 | 3 | 115 | 46 |
32(1-1/4") | G1-1/4" | 105 | 130 | 150 | 55 |
40(1-1/2") | G1-1/2" | 120 | 155 | 175 | 65 |
50(2") | G2" | 140 | 175 | 195 | 75 |
*:P2Express export pressure |