Some characteristics of plastic ball valves and key points of installation and construction


  The ball valve is often referred to as the simpl […]


The ball valve is often referred to as the simplest valve, but do you really understand it? It has the action of rotating 90 degrees, the cock body is a sphere, with a circular through hole or channel passing through its axis. In my country, ball valves are widely used in petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, steel and other industries, and occupy a pivotal position in the national economy.

The plastic ball valve is mainly used to cut off or connect the medium in the pipeline. The special form can be used for fluid adjustment and control. Compared with other valves, the ball valve has simple structure, small size, light weight, and low material consumption. The installation size is small, the switch is fast, the 90° reciprocating rotation, and the driving torque is small. It has good fluid control characteristics and closing and sealing performance.

As an integral ball valve, the plastic ball valve has fewer leakage points, high strength, and convenient assembly and disassembly of the connecting ball valve. The installation and use of the ball valve: When connecting the flanges at both ends to the pipeline, the bolts should be evenly tightened to prevent leakage due to flange deformation. Turn the handle clockwise to close, and vice versa to open. Ordinary ball valves can only be used for cut-off and flow-through, and flow adjustment is not suitable. Liquids containing hard particles can easily scratch the surface of the ball. Here we need to specifically explain why ordinary ball valves are not suitable for flow adjustment, because if the valve is half-open for a long time, the service life of the valve will be reduced. The reasons are as follows: 1. Damage to the valve seal 2. Damage to the ball 3. Flow rate Inaccurate adjustment 4. If the pipeline is a high-temperature pipeline, it is easy to cause eccentricity.