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What affects instrument pipe fitting valve problems?

2023-07-05 16:00:53

1. Under the influence of temperature or sealing force, the structure of the sealing pair of the valve sealing substructure of instrument pipe fittings will change. This change will affect and change the force between the sealing pairs, thus reducing the sealing performance of the valve. Therefore, when selecting seals, it is very important to select seals with elastic deformation. At the same time

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Significance of Periodically Checking the Tightness of Stainless Steel Ferrule Joints

2023-07-05 15:58:02

Regularly check the tightness of the stainless steel ferrule joint through the discharge nozzle. If there is internal leakage, it shall be handled according to the internal leakage treatment procedure. Timely inject a certain amount of fresh grease into the sleeve joint seat, and the injection amount and frequency depend on the activity frequency of the sleeve joint. In general, the stainless steel ferrule joint should be injected with an appropriate amount of

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How to deal with the problem of oil leakage of instrument needle valve?

2023-07-05 15:55:55

What should we do if the needle valve of the instrument leaks oil? In the oil and gas production site, the instrument needle valve is usually used below the pressure gauge, but oil leakage may occur in the production site. There are three ways to solve this problem: 1. Tighten the packing nut; 2. Open the packing nut and wrap it with raw rubber

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Introduction to selection standards of instrument pipe fittings and valves

2023-07-05 15:53:30

1. Low temperature needle valve with valve cover shall be selected for pipeline and device of low temperature medium. 2. The needle valve of lifting rod can be selected on the pipeline of catalytic cracking unit of oil refining unit. 3. Instrument pipe fitting valves with valve seat sealing rings shall be selected for devices and pipelines with corrosive media such as acid and alkali in the chemical system. 4. Metal to metal sealing needle valve can be used for metallurgy

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Key points for installation of stainless steel ferrule joint

2023-07-05 15:49:33

During the installation of stainless steel ferrule connector, it is very important to correctly install the ferrule. Next, we will provide the following instructions on the installation points of stainless steel ferrule connectors. When the electric ball valve pipe of stainless steel ferrule joint needs to be cleaned with acid solution, it should be cleaned with acid solution first. According to the stainless steel ferrule connector

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Introduction to the calculation method of flow coefficient of instrument needle valve

2023-07-05 15:44:29

Calculation method of flow coefficient of instrument needle valve The calculation of flow coefficient of instrument needle valve is as follows: Q -- high flow m3/h; G - Specific gravity (usually 1); P1 -- inlet pressure bar; P2 -- outlet pressure bar; 4P=P1-P2 bar. The relationship between Cv and Kv is as follows: Cv=1.17Kv, in fact, to be exact, Cv=1.16

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