Choke Valve

Classification of Choke Valve

The choke valve can be divided into straight-through type and angle type according to the channel mode; according to the shape of the opening and closing member, there are three types of needle shape, groove shape and window shape. Although choke valve is classified into different types, they share similar even the same choke valve operation theory.

Adjustable throttle: The valve needle and spool are made of hard alloy. The product is designed according to API6A standard and has wear resistance and erosion resistance. Mainly used in wellhead oil (gas) tree equipment.

Sleeve type choke valve: The valve core adopts low noise balance structure, which is light and easy to open. The product is designed according to API6A standard. The surface of the valve core is covered with tungsten carbide. It is suitable for flashing, high pressure difference, high pressure, cavitation and other harsh conditions. Occasionally, the service life is long and the flow adjustment accuracy is greatly improved. Suitable for oil, natural gas, chemical, oil refining, hydropower and other industries.

Application of Choke Valve

Since the flow rate of the choke valve depends not only on the area of the orifice, but also on the pressure difference before and after the orifice, the rigidity of the valve is small, so it is only suitable for the actuator load change and the speed stability is not high. occasion.

For the throttle control system with large load variation of the actuator and high speed stability requirements, the choke valve must be pressure compensated to keep the differential pressure before and after the choke valve constant, so as to achieve flow stability.