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Valve material and valve standards-(7)- Monel alloy
Monel alloy for corrosion resistant valve 1. Introduction/overview of Monel alloy: Monel alloy, cast nickel alloy, Hastelloy alloy, etc. are all materials for making special purpose valves. Monel alloy is a Ni-Cu alloy in nickel-based corrosion-resistant alloys. It was first developed by the US Nickel Company. Its typical composition is 70% Ni and 30% Cu. […]
Valve material and valve standards-(6)-gasket material
Valve Gasket material: The gasket is used to fill all the unevenness between the two joint surfaces (such as the sealing surface between the valve body and the bonnet) to prevent the medium from leaking between the joint surfaces. 1. Requirements for gaskets: The gasket material has a certain degree of elasticity, plasticity and sufficient […]
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 […]