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Valve material and valve standards-(5)-packing material
Packing /Filler material: On the valve, the packing is used to fill the space of the valve cover packing chamber to prevent the medium from leaking through the valve stem and the bonnet packing chamber. Requirements for packing. 1. Good corrosion resistance, the filler must be able to withstand the corrosion of the medium in […]
Valve material and valve standards-(4)-fastener material
Fastener materials: Fasteners mainly include bolts, studs and nuts. The fastener directly bears the pressure on the valve, which plays a key role in preventing the outflow of the medium. Therefore, the selected material must ensure sufficient strength and impact toughness at the operating temperature. When selecting fastener materials according to medium pressure and temperature, […]
Valve material and valve standards-(3)-sealing material
Section 2: 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 considers factors such as corrosion resistance, scratch resistance, erosion resistance, and oxidation resistance. Generally, sealing surface materials are […]
Valve material and valve standards-(2)-body stem bonnet material
Selection of valve material: There are many materials for manufacturing valve parts, including various types of ferrous and non-ferrous metals and their alloys, and various non-metallic materials. The materials for manufacturing valve parts are selected according to the following factors: 1. The pressure, temperature and characteristics of the working medium. 2. The force of the […]
Valve material and valve standards-(1)
What material is WCB/LCB/LCC/WC6/WC in the valve? W, wrought casting; C, Carbon steel; A, B, C indicate the strength value of steel grades from low to high. WCA, WCA, WCC represent carbon steel, ABC represents the strength level, and WCB is commonly used. The corresponding pipe material of WCB should be A106B, and the corresponding […]
Valve body and material classification
The valve body is a main part of the valve; there are different mechanical manufacturing methods according to the pressure level. For example: casting, forging, etc. Material Description Introduction Valve bodies of medium and low pressure specifications are usually produced by casting process. The valve body of medium and high pressure specification is produced by […]
Comparison of pneumatic actuator, electric actuator and hydraulic actuator
The valve actuators used in the regulating valve are nothing more than pneumatic, electric and hydraulic: 1. Nowadays, most of the actuators used in industrial control places are because they use air source as power, which is more economical than electric and hydraulic, and has a simple structure, which is easy to control and maintain. […]
Valve actuator / actuation -(8)- application areas
Application areas of valve actuators: Electric actuators are mainly used in the following three areas: 1. Power plant Typical applications are: ① Application in thermal power industry Air blower damper damper, Primary air intake damper, Air preheat damper damper, Flue gas recirculation, Bypass damper damper, Secondary air intake damper, Main bellows damper damper, Burner adjustment […]
Valve actuator / actuation -(7)- generator
Generator for valve actuator: 1. The development history of generator controller The automatic control of generator set has experienced relay control. Greatly simplified the control circuit? Reliability has also been improved, to the point of more humanity, there are also some generator manufacturers produce small gasoline engine integrated machine, practical and convenient. 2. Diesel generator […]
Valve actuator / actuation -(6)-Control panel
Control panel of valve actuator: The main purpose of the control panel is to distribute the electrical energy output by the generator to the user’s load or electrical equipment, and it is also used to indicate the operation of the diesel generator and to keep the generator’s voltage stable when the load changes. Generally, voltmeters, […]