Branch pressure reducing valve details


Branch pressure reducing valve details

Branch pressure reducing valveIt 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
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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