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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 |
| 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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