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Installation attentions for valves
Precautions for valve installation: Globe valves, throttle valves, pressure reducing valves, check valves and other valves are all directional. If the throttle valve is installed upside down, it will affect the use effect and life. If the pressure reducing valve does not work at all, if it is stopped The return valve can even cause […]
Current status and development of Chinese valves
Domestic status: In terms of technical support for valve production and R&D, domestic valves are not lagging behind foreign valves. On the contrary, many products are comparable to international companies in terms of technology and innovation. The development of the domestic valve industry should move towards high-end modernization. Driven by the four major forces of […]
Valve cleaning steps and assembly requirements
Valve cleaning steps: The valve parts must go through the following processes before assembly: According to the processing requirements, some parts need to be polished, and the surface must not have processing burrs, etc.; All parts are degreased; After degreasing is completed, pickling passivation is carried out, and the cleaning agent does not contain phosphorus; […]
Basic knowledge of valve
A valve is a device used to control the direction, pressure and flow of fluid in a fluid system. A valve is a device that allows the medium (liquid, gas, powder) in the piping and equipment to flow or stop and can control its flow. The valve is a control component in the pipeline fluid […]
What are the accessories for pneumatic valves?
Pneumatic valves have the advantages of fast switching and low price. Correct selection of pneumatic valves requires the use and characteristics of related accessories to achieve stable performance and long service life. In addition to improving the quality of the valve, it is also The matching of accessories is also very important. Here, I will […]
Fasteners, fillers and gasket materials of valves
There are many other valves parts and 1. Fastener material of valves: Fasteners mainly include bolts, studs and nuts. The fastener directly bears the pressure on the valve, which plays an important role in preventing the outflow of the medium. Therefore, the selected material must ensure sufficient strength and impact toughness at the operating temperature. […]
What is the material of Bolts and nuts of Valve Stem?
Bolts and nuts material of valve stem: The stem nut directly bears the axial force of the stem during the opening and closing of the valve, so it must have a certain strength. At the same time, it and the valve stem are threaded transmission, which requires a small friction coefficient, no rust and avoid […]
What is the material of the butterfly valve stem?
Stem material classification: During the opening and closing of the butterfly valve, the valve stem bears the forces of tension, pressure and torsion, and is in direct contact with the medium. At the same time, there is relative frictional movement with the packing. Therefore, the valve stem material must ensure that there is enough at […]
What is the material of the main parts of the butterfly valve?-(2)
Selection of valve sealing material: Sealing surface material: The sealing surface is the most critical working surface of the valve. The quality of the sealing surface is related to the service life of the valve. Generally, the sealing surface material should consider factors such as corrosion resistance, scratch resistance, erosion resistance, and oxidation resistance. Usually […]
What is the material of the main parts of the butterfly valve?-(1)
Selection of butterfly valve parts materials: There are many materials for manufacturing butterfly valves, including ferrous and non-ferrous metals and their alloys of different brands, and various non-metallic materials. The materials for manufacturing valve parts should be selected based on the following factors: 1. Pressure, temperature and characteristics of working medium. 2. The force of […]