Recently, TEJI Valves Group obtained two invention patent authorizations: “Online Maintenance Cryogenic High-Performance Ball Valve (Authorization Announcement No.: CN 113236810 B)” and “Compact Online Maintenance Cryogenic Butterfly Valve (Authorization Announcement No.: CN 113154056 B),” marking another significant breakthrough in our extreme operating condition valve technology. The patent “Online Maintenance Cryogenic High-Performance Ball Valve” is a […]
A plug valve is a shut-off component—it opens and closes by rotating the valve disc 90 degrees around the valve body’s centerline, used to cut off, distribute, and change the flow direction of media in pipelines. The working principle of a plug valve is to regulate and cut off fluid flow by rotating the valve disc to […]
Installation of a Flanged Ball Valve Preparation Before Ball Valve Installation The upstream and downstream pipelines should be coaxial, and the sealing surfaces of the two flanges should be parallel. The pipeline should be able to withstand the weight of the ball valve; otherwise, appropriate supports must be provided on the pipeline. Clean the pipelines […]
Gate Valve Definition and Terminology Gate Valve Definition: A gate valve is a valve that opens and closes by moving its gate perpendicular to the direction of media flow (channel axis). Among various types of valves, the gate valve is the most widely used. Gate valves are mainly used in pipelines to cut off the […]
The sealing performance of a valve directly affects the control effect of the fluid medium and the safe operation of the system. Grinding the valve sealing surface is one of the important means to ensure its sealing performance. Its main purpose is to eliminate unevenness, defects, and particles on the sealing surface, improve the surface […]
Faced with numerous valve classifications and complex operating conditions, selecting the most suitable valves for pipeline systems requires, first, understanding valve characteristics; second, mastering the steps and criteria for valve selection; and third, adhering to the principles for selecting valves used in the petroleum and chemical industry. The principles for selecting valves in the petroleum […]
