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


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

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, and 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. Small installation size, rapid switch, 90° reciprocating rotation, small driving torque, etc., with good fluid control characteristics and closing and sealing performance

In recent years, a variety of plastic valves have been developed according to the anti-corrosion, acid and alkali resistance requirements of different industries, with excellent characteristics. Take the UPVC ball valve as an example. Compared with the metal ball valve, its valve body is lighter in weight, strong in corrosion resistance, compact and beautiful in appearance, light in weight and easy to install, strong in corrosion resistance, wide in application, hygienic, PVC Ball Valve non-toxic, and wear-resistant It is damaged, easy to disassemble, and easy to maintain. In addition to UPVC plastic materials, plastic ball valves also have FRPP, PVDF, PPH, CPVC, etc. The structure mainly includes sockets, screw flanges and other forms. Our company has various types of valves with various specifications to choose from. The following figure shows the series of flanged ball valves (slidable).

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.