Product overview
The fixed proportional pressure reducing valve is beautiful in appearance, reliable in quality, accurate in proportion and stable in operation, reducing both dynamic pressure and static pressure. This valve utilizes the pressure difference generated by the different cross-sectional areas at both ends of the piston inside the valve body to change the pressure behind the valve to achieve the purpose of decompression.
The pressure reduction ratio of this series of proportional pressure reducing valves is: 2:1, 3:1, 4:1, 3:2, etc., and special pressure reducing valves can also be designed according to user requirements.
Scope of application
This series of pressure reducing valve series products are suitable for urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection and other industries.
The main technical parameters
|
Applicable media
|
Water, gas
|
|
Proper temperature
|
≤90℃
|
|
Pressure error
|
≤8％
|
|
Minimum open
|
2：1
|
0.2MPa
|
|
Pressure
|
3：1
|
0.3MPa
|
|
Connection Type
|
Flange
|
|
Main part
|
Body
|
Tin bronze
|
Stainless steel
|
Cast iron
|
|
Material
|
Trim
|
Tin bronze
|
Stainless steel
|
Tin bronze or stainless steel
|
Main external dimensions
|
Nominal diameter DN （mm）
|
A1
|
|
|
25
|
115
|
|
32
|
124
|
|
40
|
132
|
|
50
|
140
|
|
65
|
155
|
|
80
|
155
|
|
100
|
200
|
|
125
|
220
|
|
150
|
230
|
|
200
|
270
|
Note: Flange connection size PN1.0MPa according to GB4216.4-84 standard, PN1.6MPa according to GB4216.5-84 standard.
