1. Gate valve opening and closing member is the gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be used for regulating and throttling. 2. gate valve gate with the stem together for linear movement, called the lifting stem gate valve (also called open stem gate valve). Usually in the lifting rod on the trapezoidal thread, through the valve end of the nut and the valve body on the guide groove, the rotary movement into a straight 3 line movement, that is, the operating torque into the operating thrust.

Soft seal gate valve opening and closing member is the gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be adjusted and throttling.

Soft seal gate valve opening and closing member is the gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be adjusted and throttling.

Relying on the rotation of the valve core to make the valve open or closed, the valve core and the inner side of the valve body are all made of fluoroplastic. It has the advantages of light switch, small volume, reliable sealing, simple structure, easy maintenance, and wide range of use. Adopting full bore and floating ball structure, the valve can be closed without leakage in the whole pressure range. Compact and reasonable structure, the valve body cavity space is minimal, reducing the medium.

V-ball valve is a kind of ball valve, its closing member is a hemisphere body with V-shaped openings, V-shaped openings with sharp edges, this ball valve can be installed in the equipment or pipeline, open or close the flow path, control the flow of media.

1、Simple structure, good general interchangeability, low price. 2、Stem seal is not easy to deform so as to avoid the stem leakage phenomenon, the overall support performance is good, stable and firm. 3、The amount of seat rubber is small, the potential impact of expansion is small, easy to control the torque in the appropriate range.

Three eccentric metal sealed butterfly valve is a new generation of butterfly valve products developed by introducing German technology. Product performance has been better than the leading level at home and abroad, widely used in metallurgy, petroleum, chemical industry, electric power, municipal construction and other industrial pipelines for cutting off or regulating the flow of media.

Butterfly valve is a kind of valve that uses disc type opening and closing parts to turn back and forth about 90° to open, close or regulate the flow of medium. It not only has the advantages of simple structure, small volume, light weight, material consumption, small installation size, small driving torque, easy to operate, rapid, and can also have a good flow regulation and closing sealing characteristics, is one of the fastest growing valve varieties in recent years. Butterfly valve is easy to combine with various driving devices, has good durability and reliability. Its use in a wide range of fields, the use of varieties and the number of rising trend, and to high temperature, high pressure, large diameter, high sealing, long life, excellent regulating characteristics, as well as a multi-functional development of the valve, its reliability and other performance indicators have reached a high level.

The centreline double flange butterfly valve is designed according to the requirements of large pipeline network and belongs to mesh valve.