Fengbao Valve Manufacturing Co., Ltd.
Fengbao Valve Manufacturing Co., Ltd.
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Silent Check Valve Hc42x Nodular Cast Iron Vertical Check Valve Sewage Check Valve
Product classification of check valve:
According to the structure, check valves can be divided into three types: lift check valves, swing check valves and butterfly check valves. Lift check valve can be divided into vertical and horizontal. The swing check valve is divided into three types: single-lobe, double-lobe and multi-lobe. The butterfly check valve is a straight-through type. The above types of check valves can be divided into three types: threaded connection, flange connection and welding.
Check valve installation points:
1. Do not make the check valve bear weight in the pipeline. The large check valve should be supported independently so that it will not be affected by the pressure generated by the piping system.
2. During installation, pay attention to the direction of medium flow should be consistent with the direction of the arrow on the valve body.
3. The lift-type vertical flap check valve should be installed on the vertical pipeline.
4. The lift-type horizontal flap check valve should be installed on the horizontal pipeline.
| Part name | Meterial |
| Body | Gray iron, ductile iron, cast steel |
| Gate | Ductile iron+EPDM or NBR |
| Allen bolits | Carbonization process |
| Seals | NBR,EPDM |
| Bonnect | Gray iron,ductile iron,cast steel |
| Stem | Stainless steel |
| O-ring seals | NBR |
| Thrust bearings | Tin bronze |
| Bolt | Carbon steel,ally steel |
| Gland | Ductile iron,cast steel |
| Dust Cover | NBR |
| Hand wheel | Malleable iron |
