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Branch pressure reducing valve details
Branch pressure reducing valve
It is mainly composed of diaphragm, porch-shaped disc, adjusting spring and other parts. The branch pipe pressure reducing valve uses the diaphragm to sense the downstream pressure change to drive the valve disc, and changes and controls the valve opening to realize the pressure reducing and stabilizing function. The outlet pressure value is set by adjusting the spring pressure.
The pressure-reducing valve of the branch pipe appropriately increases the diaphragm area and improves the sensitivity. Stable and sensitive decompression and pressure stabilization. It is suitable for the branch pipes of high-rise apartment buildings and residential areas, as well as the household branch pipes of apartments and houses.
Dimensions and technical parameters of direct acting film type branch pressure reducing valve
Branch pressure reducing valveMain technical parameters and performance indicators
|
Nominal pressure (Mpa)
|
1.0
|
1.6
|
|
Shell test pressure (Mpa)*
|
1.5
|
2.4
|
|
Sealing test pressure (Mpa)
|
1.0
|
1.6
|
|
Maximum inlet 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
|
|
|
Leakage
|
0
|
|
|
Operating temperature
|
0℃-80℃
|
|
Shell test does not include diaphragm and top cover.
Branch pressure reducing valveMaterial of main parts
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Part Name
|
Part material
|
|
valve body
|
copper alloy
|
|
cap
|
copper alloy
|
|
Disc
|
copper alloy
|
|
O-ring
|
Nitrile rubber
|
|
sealing ring
|
Nitrile rubber
|
|
Diaphragm
|
fabric nitrile rubber
|
|
adjustment spring
|
60Si2Mn
|
|
adjusting bolt
|
2Cr13
|
Branch pressure reducing valveFlow coefficient (Cv)
|
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
|
Dimensions and technical parameters of branch pressure reducing valve
|
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
|
ps: P2 means outlet pressure
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