Our country pneumatic control valve manufacturing industry started late and relevant factories and department self-designed and produced direct single seat regulator, two seat regulator, 3-way regulating valve, high pressure regulating valves, butterfly valves, long trip actuators and valve position

A double seated control valve have very poor shut off capability. The guiding, seat material, actuator thrust, pressure drop, and the type of fluid can all play a part in how well a particular control valve shuts off. Seat Leakage Classifications There are actually six different seat leakage classif

According to this method of specifying, check valves and pre-fill valves would be 2-way valves because they have two ports. However, because these valves are basically single function and have infinitely variable flow paths, their symbols and terminology do not follow general directional control val

The engineering beauty of ball valves and control valves from their simplicity. A ball with a hole in the middle sits inside passage way that fluid or air from passing through.

Directional control valve features, 1. Directional control valve is compact construction and low pressure drop, etc.

Directional control valve are operated via radio control.

The purpose of the Control Valve is to regulate the flow rate of fluids through pipes in the system. This is accomplished by placing a valve in the path of flow of liquid. It acts to offer resistance to the flow of a liquid, where the resistance and flow can be controlled by a signal from a process

After heavy oil heating mining into steam driving mining, forming a fixed steam injection pipeline, steam distribution and measured typical processes. Heavy oil development steam injection process crucial in three problems is steam assign, measurement and adjustable control.