The Y strainer is a common strainer on the pipeline transporting media. It is usually installed at the inlet end of pressure reducing valves, pressure relief valves, level control valves or other equipment of the water supply. And it is used to remove impurities in the medium and protect the valve from seal failures caused by mechanical impurities stuck in the seal ring, thus ensuring the normal operation of the valve and other equipment. The application scope of Y strainers...
The Application Scope and Selection Principle of Y Strainers Read
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Structural features of electric PVC ball valves The electric PVC ball valve, belonging to the quick opening & closing valve, has a simple structure, a small size, light weight, small driving torque, etc. It is used to cut off or adjust the medium in the pipeline, and has good sealing performance. The valve seat has good sealing. And the seal capacity of the ball valve increases with the increase of the working pressure of the ambient medium. The thrust bearing reduces...
Introduction to Electric PVC Ball Valves Read
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A Threaded Connection It is a simple connection method, which is often used for small valves. The inlet and outlet of the valve are usually machined into taper pipe threads or straight pipe threads. The joint may leak if the threaded connection is used, and sealant, sealing tape or filler can be used to fill it. Threaded valves are mainly valves with a nominal diameter below 50 mm. If the diameter is too large, it is very difficult to install the valve and...
Common Valve Connection Methods Read
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Stainless steel check valves are used to make valves unblocked or blocked by rotating valve stems. It can be made of large diameter ball valves with 90 angle. As the switch of ball valves is light in small volume. So, it can be made ones with large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are usually closed, and it is not easy to be eroded by medium. Stainless steel check valves are divided into low pressure stainless steel...
Structural Division of Stainless Steel Check Valves Read
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1.Overview Butterfly type microresistance slow closing check valve (WZHF) is mainly used in water conservancy, electric power, water supply and drainage, municipal engineering, petroleum, petrochemical, metallurgy and other industries. It can effectively eliminate the water hammer in the pipeline and realize the reliable check of the pipeline so as to protect the pipeline system. 2.How it works? When the water pump is started, the check valve will open automatically under the action of water pressure,...
The Intro of Butterfly Microresistance Slow Closing Check Valves Read
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In the daily use of valves, various failures often occur. The leakage of valves is the most common one among many failures and it generally includes internal leakage and external leakage. So, what is the difference between the two? The internal leakage of the valve usually refers to the condition that the medium still leaks from the passageway of the valve when the valve is completely closed. Generally speaking, the internal leakage means that the valve is not...
Difference Between Internal and External Leakage of Valves Read
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The unusual pressure rise of cast steel gate valves happens strikingly and similarly in many relative applications, because the two major factors of its occurrence are similar in lots of industrial systems, that is, the system medium changes from cold state to thermal state after starting up. The gate is closed in cold state and opened in thermal state. Therefore, if no measures are taken for the system, the damage to the system caused by the unusual pressure rise is...
3 Hazards of Unusual Pressure Rise of Cast Steel Gate Valves Read
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According to the requirement for engineering controls, the control function of electric butterfly valves is achieved by the electric actuator. The purpose of using electric butterfly valves is to control the opening, closing and regulating linkage of the valve by non-manual electrical control or computer control. At present, the use of the electric actuator is not only to save manpower. Because the function and quality of products from different manufacturers are...
Pick Electric Butterfly Valves by Knowing Electric Actuators Read
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The valve seat of fully welded ball valves is composed of the carbide Teflon sealing ring and the disk spring, so that they have strong adaptability to changes of pressure and temperature and will not produce any leakage within the marked pressure and temperature. The hard seal butterfly valve, also known as a flap valve, is a kind of regulating valve with simple structure, and it can also be used for on-off control of low-pressure media in the pipe. A hard seal butterfly valve mainly plays the...
Fully Welded Ball Valves vs. Hard Seal Butterfly Valves Read
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The quick opening ball valve is evolved from the plug valve. Its opening and closing part is a ball, which rotates 90 degrees around the axis of valve stem to realize its opening and closing. The ball valve is mainly used to cut off, distribute and change the flow direction of media in the pipe. The ball valve with V-shaped opening also has good flow regulation. Features of the quick opening ball valve: (1) Good flow resistance (actual flow resistance is zero). (2) This valve can be reliably applied...
The Features of Quick Opening Ball Valves Read
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