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The safety valve is a special valve whose opening and closing parts are normally closed under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, the medium is discharged to the outside of the system to prevent the medium pressure i...Read more »
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The basic function of the steam trap is to discharge the condensed water, air and carbon dioxide gas in the steam system as soon as possible; at the same time, it can automatically prevent the leakage of steam to the maximum extent. There are many varieties of traps, each with different performan...Read more »
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The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the perspective of fluid mechanics, the pressure reducing valve i...Read more »
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Check valve, also known as check valve or one-way valve, is a valve that automatically opens and closes under the action of the pressure difference between the front and back of the valve. Its function is to make the medium flow in only one direction, and prevent the medium from flowing back in t...Read more »
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The globe valve is a valve that uses the disc to control the opening and closing. By changing the gap between the valve disc and the valve seat, that is, changing the size of the channel section to adjust the medium flow or cut off the medium passage. Pay attention to the direction of fluid flow...Read more »
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Gate valve, also known as gate valve, is a valve that uses a gate to control the opening and closing, and adjusts the flow of the pipeline and opens and closes the pipeline by changing the cross section. Gate valves are mostly used for pipelines that fully open or fully close the fluid medium. Ga...Read more »
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1. The valve body material is mostly made of cast iron, which is brittle, so it must not be hit by heavy objects. 2. When moving the valve, it is not allowed to throw it by hand; when lifting or hoisting the valve, the rope should be tied to the valve body, and it is strictly forbidden to tie it...Read more »
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1. The valve installation position should not hinder the operation, disassembly and overhaul of the equipment, pipeline and valve body itself, and the aesthetic appearance of the assembly should be taken into consideration. 2. For valves on horizontal pipelines, the valve stem should be install...Read more »
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Low pressure, medium pressure and high pressure valves should be subjected to strength test and tightness test. Alloy steel valves should also be subjected to spectrum analysis on the shell one by one, and the material should be reviewed. 1. The strength test of the valve The strength test of th...Read more »
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① Carefully check whether the valve model and specifications meet the requirements of the drawings. ② Check whether the valve stem and valve clapper open flexibly, and whether there is jamming or skewing. ③ Check whether the valve is damaged, whether the thread of the threaded valve is correct an...Read more »
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The basic introduction of the valve Valve is a widely used mechanical product in each country’s economy. You can find valves commonly used in the following fields like oil, nature gas, coal, metallurgy, mining, refinery, pipe transportation, petrochemical, chemical, pharmacy, food productio...Read more »
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COMMON ABBREVIATIONS IN THE VALVE INDUSTRY ORGANISATIONS/SOCIETIES ANSI American National Standards Institute API American Petroleum Institute ASME American Society of Mechanical Engineers ASTM American Society for Testing Materials BS British Standards DIN Deutsche Industrie –...Read more »