Product introduction
Water type silence check valve is flow-line designed and pressure loss is very little;the spring acce-lerates the valve’s closing and get silence effect;metal-to-metal seating is liable and it needs small installation space.It is often installed at the outlet of pump to prevent water-hammering,water hitting and destructive impact and backward flow induced and protect the related equipments.It is widely used in feeding/draining system,fire protection,construction,heat supplying and industry system etc..
Main technical parameters
Nominal pressure: 1.0-1.6
Nominal diameter: 40-250mm
Service:water and weak corrosive fluid
Working temperature:0-80
Flanged end: GB/T17241.6 GB9113
Inspection and test: GB/T 13927 API 598
Typical installation diagram
Material
|
part
|
body
|
disc
|
spring
|
seat
|
|
Material
|
Cast iron ductile cast iron,cast steel
|
Cast copper,stainless steel
|
Stainless steel
|
Copper,steel
|
|
DN
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
|
L
|
45
|
55
|
70
|
75
|
95
|
115
|
135
|
160
|
200
|
|
D
|
90
|
105
|
125
|
140
|
160
|
195
|
215
|
270
|
325
|
|
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