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2019.12.19

Four connection methods of stainless steel valves

Stainless steel valves are now used in chemical industry, papermaking, mining, petrochemical, petroleum, electric power, liquefied gas, food, pharmaceuticals, water supply and drainage, municipal administration, mechanical equipment supporting, electronic industry, urban construction and other fields. Valves are control components in pipeline fluid transportation systems. Stainless steel valves are used to change the passage section and the flow direction of the medium. They have the functions of diversion, regulation, check, throttling, cut-off, diverting or overflow pressure relief.

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Four connection methods of stainless steel valves

2019.12.11

The difference between pneumatic high platform ball valve and ordinary

Pneumatic ball valves are one of the most widely used types of valves in recent years. They are not only easy to operate, but also perform very quickly. They are used in many fields, such as petroleum, chemical industry, power generation, papermaking, food, pharmaceutical industries and other sectors. and in people’s daily lives. By connecting the air source, solenoid valve control, and related accessories, the pipeline can be quickly opened or closed, and intelligent control can be performed to adjust various process parameters such as pipeline media!

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The difference between pneumatic high platform ball valve and ordinary

2019.12.03

Why is there still pulsation after installing a pulsation damper?

The metering pump will generate pipeline pulses during operation. The reason is that the metering pump is a reciprocating volumetric pump, which is generated by its working principle. In order to eliminate pipeline pulses, a pulse damper needs to be installed to achieve good results. Recently, I encountered a problem. Even if the metering pump is equipped with a pulse damper, there will still be pipeline pulses. Shanghai Longmeng Mechanical Pump and Valve Manufacturer will share this case with you.

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Why is there still pulsation after installing a pulsation damper?

2019.11.26

What is the function of back pressure valve? How to deal with stress?

What is the function of back pressure valve?       1. The one-way valve on the outlet pipe is used to prevent liquid backflow, and the back pressure valve is used to keep the pressure at the pump outlet constant.   2. The system can be used as a safety valve when the requirements are not very strict.   3. Cooperate with pulsation dampers to reduce the damage of water hammer to the system, reduce the peak value of speed fluctuations, and protect pipes, elbows, and joints from pressure fluctuations.

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What is the function of back pressure valve? How to deal with stress?

2019.11.25

Valve standards (GB) Valve *** standards

Valve standards are divided into mandatory national standards ( GB) and recommended national standards (GB/T). The number of the latest standard for valves consists of the code name of the first standard, the sequence number of the first standard released and the year number (year of release) of the first standard. The national standard for valves includes two parts: one is to regulate the manufacturing, structural length, material, etc.; the other is to conduct a standardized search for the structure, size, etc. of each type of valve. Users can look at the corresponding Valve standards. This standard mainly provides a brief explanation of the general standards and technical condition standards for valves. The detailed latest standards can be viewed in the latest information released on the standard website.

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Valve standards (GB) Valve *** standards

2019.11.19

Valve pressure grade conversion | division | comparison table

Usually we talk about how many kilograms of pressure valves are equivalent to how many MPa , which is the corresponding conversion between MPa and kilograms. For example, 1.0 MPa = 10 kilograms, 2.5 MPa = 25 kilograms of pressure. The pressure regulation range of our back pressure valve is: 0-1.0Mpa.

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Valve pressure grade conversion | division | comparison table

2019.11.12

Valve types and valve classifications

Valves have a wide range of uses and types, and the difficulty of classifying valves is also increasing. In order to better understand valve products, Duoyi Company has specially classified common valves. The types of valves are classified according to the actual working conditions on site. Some Depending on the manufacturer's own selection and special circumstances, different uses and working principles will vary. Generally speaking, it can be divided into two categories: Type *** automatic valve: a valve that relies on the ability of the medium (liquid, gas) itself to act on its own. Such as check valves, regulating valves , steam traps, pressure reducing valves , safety valves, pulse dampers, back pressure valves, electric ball valves , etc.

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Valve types and valve classifications

2019.11.06

How to open and close the electric gate valve? Switch tips not to be missed! Shared

How to open and close the electric gate valve? Switch tips not to be missed! The closing time of the electric head of the electric gate valve does not exceed 30S. What is the impact of the open closing time? The switching time of the electric gate valve?   Twist it to the left to close, and twist it to the right to open the valve. Pay attention to the arrow mark on the valve. The electric head switching time of the electric gate valve is determined by the speed, pitch, and molding method according to user requirements; under the same torque requirements, the faster the rotation speed, the shorter the molding time, the larger the pitch, the shorter the opening and closing time, the greater the power, and the natural price. The more expensive.

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How to open and close the electric gate valve? Switch tips not to be missed! Shared

2019.10.28

Classification and description of back pressure valve connection methods

Classification and description of valve connection methods of back pressure valve: Nowadays, the application range of valves is getting wider and wider, and corresponding valves should be used in different environments. The entire valve has different connections with pipelines or equipment. Regardless of whether it is installation or use and maintenance, attention must be paid to it. Improper valve connection methods may easily cause the valve to run, pop, drip, leak, etc. Therefore, valve users should treat it according to the actual situation.

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Classification and description of back pressure valve connection methods
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