It is mainly used to cleaning pipe in natural gas gate station, sweeping minor caliber pipe and cleaning short-distance pipe.
Pig Valves contain pig launcher valves and pig receiver valves, they are paired.

Structure feature:
1. The inside of pipe without gaps, avoid existing foreign body;
2. Pig valves' sealing ring are simple and all O-rings, maintain easy.
3. Pig valves could be pressure relief by relief valves, easy to open/shut of quick closure.
4. The diameter of ball tunnel is a little big, what could garantee that medium would ot stop flowing when cleaner enters the tunnel.
When valve's shut, pipe-conveying medium could still keeps flowing in lateral drift diameter of ball.

The design confirm to API 6D.
Pressure range: 150~2500LB
Size range: 2~12 inch