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Hydraulic Valve Regulations And Requirements
Oct 16, 2017

The material of the main parts of the valve body of the hydraulic valve should be first taken into account the physical properties (temperature, pressure) and chemical properties (corrosivity) of the working medium. Hydraulic Valve At the same time, we should also understand the cleanliness of the medium (there is no solid particles). In addition, reference to the relevant provisions and requirements of the State and the use sector.

Many kinds of materials can meet the requirements of hydraulic valve body in a variety of different working conditions. However, Hydraulic Valve the correct and reasonable choice of the hydraulic valve body material, you can obtain the hydraulic valve body most economical service life and the best performance.

Gray Iron gray iron valve is used in all fields of industry for its low price and wide application. They are commonly used in the case of water, steam, oil and gas, Hydraulic Valve and are widely used in chemical, printing and dyeing, oil, textile and many other industrial products that have little or no impact on iron pollution.

Suitable for working temperature between –15~200℃, nominal pressure pn≤1.6MPa low pressure hydraulic valve body.

Ductile Iron Ductile Iron is one of the cast iron, this cast iron, Hydraulic Valve pellet or spherical graphite replaced the gray cast iron flake graphite. This change in the internal structure of the metal makes its mechanical properties better than that of ordinary gray cast iron and does not damage other properties. Therefore, the hydraulic valve body made of ductile iron is more pressure than that of the hydraulic valve body made of gray iron. Suitable for working temperature between –30~350℃, nominal pressure pn≤4.0MPa medium and low pressure hydraulic valve body.

Carbon steel (WCA, WCB, WCC) at first the development of cast steel is to accommodate those beyond the cast iron valves and bronze valve capabilities of production needs. However, Hydraulic Valve because of the good performance of the carbon steel valve, and the resistance strength of the stress caused by the thermal expansion, the impact load and the pipeline deformation, the use range is enlarged, Hydraulic Valve which usually includes the working condition of the cast iron valve and the bronze hydraulic valve body.

Suitable for working temperature in the middle and high pressure hydraulic valve body between –29~425℃. Among them 16Mn, 30Mn temperature is –40~400℃, commonly used to replace the ASTM A105. The applicable medium is saturated steam and superheated steam. High temperature and low temperature oil, liquefied gas, compressed air, water, gas and so on.


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