It relies on the flow of the medium to automatically open and close the valve flaps.

The cast iron rising stem gate valve is a gate for opening and closing. The movement direction of the gate is perpendicular to the direction of the fluid.

The stop valve is a mandatory sealing valve. When the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak.

Reducing Valve is to reduce the inlet pressure to some required outlet pressure by adjusting, and rely on the energy of the medium itself, so that the outlet pressure automatically remain stable.

The cast steel gate valve, made of cast steel, is a valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent the medium from flowing back.

The butterfly valve is also called the flap valve, and it is a simple regulating valve adopting a handle clamp.