Add: Mechanical&Electrical Industry Zone,Yuhuan,Zhejiang,China
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.
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.
Gray iron valve is used in various fields of industry for its low price and wide application. They are commonly used in the case of water, steam, Hydraulic Valve oil and gas, 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.
Ductile iron is a kind of cast iron, this cast iron, pellet or spherical graphite replaces the flake graphite in gray iron. 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. Hydraulic Valve 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.
(WCA, WCB, WCC) at first the development of cast steel was to accommodate those beyond the cast iron valves and bronze valve capabilities of production needs. Hydraulic Valve However, 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, 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℃, Hydraulic Valve 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.
Industrial hydraulic valve Body Many are made of non-ferrous materials, mainly bronze and brass. The proportion of copper, tin, lead, Hydraulic Valve and zinc in the bronze alloy that manufactures the valve body of the hydraulic valve is usually 85:5:5:5 or 87:7:3:3. If zinc-free bronze is required, it must be explained. The physical strength, Hydraulic Valve structural stability and corrosion resistance of bronze make it especially suitable for industrial production.