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 |
Main dimensionsunit:mm
| 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 |
Drawing
