Category: Valves

A valve is a device that can be used to control the flow of liquids, gases, and slurries. Also known as regulators, valves can be found in almost any situation. They are also made in a number of different designs, depending on how they are being used, and they can be found in a range of sizes from smaller than a pinky to gigantic. Valves also vary from the extremely basic to the extraordinarily complex. They are one of the oldest mechanical designs, and basic ones have been in use for thousands of years.

The term “valve” can be used to refer to human anatomy as well as a mechanical device. Those found throughout the body regulate the flow of blood, oxygen, and body fluids. They include the extremely important heart valves, which work with the heart to pump blood through the body. Individuals with damage to those in the heart may have them replaced with artificial ones to perform this vital body function. The many valves in the human body work together to keep things running smoothly in a person’s daily life.

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Research Status of Surface Treatment Technology for Valve Remanufacturing

The surface treatment technologies and processes commonly used in the valve remanufacturing process are introduced, while the current status of the valve remanufacturing industry is analyzed. The development status of plasma surface treatment technology and laser surface treatment technology is summarized, the application of plasma surface treatment method and laser surface treatment method in the […]

Comparison and analysis of methane and helium leakage rates for low leakage test of valves

It is introduced that the test media specified in the relevant standards for low leakage test of valves are methane and helium, and in the actual test process, there is the phenomenon that valve manufacturers use helium for test evaluation in advance and then send the third party for methane low leakage type test. The […]

Characteristics and categorization of safety valve

Safety valve is an automatic valve, it does not use any external force and use the force of the medium itself to discharge the rated amount of fluid, in order to prevent pressure exceeding the rated safety value. When the pressure returns to normal, the valve closes again and prevents the medium from flowing out. […]

Structural Characteristics of Fully Welded Ball Valve

Fully welded ball valves are used in various applications. It has high quality and high performance stability, which can not be achieved by ordinary cast steel ball valves. Its service life is much longer than that of cast steel ball valves. Fully welded ball valves are widely used in urban gas, urban heating, petrochemical industry, […]

Material Selection of Forged Steel Low Temperature Globe Valve

The characteristics and structure material selection of forged steel low temperature globe valves First, the design of the low temperature valves The design of the cryogenic valve has the following requirements, depending on the working conditions: (1) The valve should have a long-term working ability in low temperature medium and ambient temperature. (2) Valves should not be a significant source of heat for […]

Common Defects and Preventive Measures of Gate Valve

What is a gate valve? A gate valve refers to a valve in which the opening and closing part (valve plate) is driven by the valve stem to move the sealing surface of the valve seat for lifting movement, and a valve that can open or cut off the passage of the fluid. When the […]

Pipeline valves should pay attention to the following three points when installing

First, be sure to check before installation Check carefully that the valve type and specifications meet the drawing requirements. Check the valve stem and disc opening for flexibility, jamming and skewing. Check the valve for damage and whether the threaded valve thread is positive and intact. Check that the combination of the valve seat and […]

How to choose the right butterfly valve?

Butterfly valve with disc type opening and closing a reciprocating swing around 90 ° to open and close or adjusting medium flow of a valve. Butterfly valve is not only simple in structure, small in volume, light in weight, low in material consumption, small in installation size, small in driving torque, easy to operate and […]

Classification and structural characteristics of safety valves

A safety valve is a valve-type overpressure relief device consisting of three main parts: seat, disc and loading mechanism. It is an automatic valve that USES the pressure of the medium itself to discharge a nominal amount of overpressure fluid through the opening of the disc to prevent the pressure in the device from exceeding […]

Do you know the pressure test methods for various valves? (with dynamic map)

In general, strength tests of industrial valves are not taken during use, but the valve body and bonnet that are corroded or repaired should take strength tests. For safety valves, the constant pressure, return pressure and other tests should comply with the specifications and relevant regulations. Valve strength and seal tests should be performed on […]