Product introduction
Oversized silence check valve is flow-line designed according to hydrodynamics and the pressure loss is very little.The valve is installed at the outlet of the pump,and it closes before the fluid flow backward,so prevent water-hammering,water-hitting and destructive impact.So the valve can run quietly in the system.It is widely used in feeding/draining system,fire protection,heat supplying system and industry.
Main technical parameters
Nominal pressure: 1.0-2.5MPa
Nominal diameter: 300-1200mm
Service:water,oils,sea water,sewage
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
|
bearing
|
spring
|
Diversion shuttle
|
seat
|
|
material
|
GG25
|
ZQA19-4
|
ZQA19-4
|
SUS316
|
Gg25
|
ZQA19-4
|
|
DN
|
300
|
350
|
400
|
450
|
500
|
600
|
700
|
800
|
900
|
1000
|
1200
|
|
L
|
181
|
184
|
191
|
203
|
219
|
222
|
280
|
356
|
368
|
432
|
524
|
|
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