Lost wax casting
What is lost wax casting? Lost wax casting builds a mold around a sacrificial wax model. After the mold investment is set, the wax is melted out and forms a cavity where the metal or glass flows in....
Valve body material scope, the valve material working temperature and pressure range
In choosing the valve body material, should be based on different uses and different pressure levels, to determine the valve body material suitable for working conditions.
The valve has been used for a long time, you know how to ensure the sealing of the valve
After the valve is used for a long period of time, the sealing surfaces of the valve disc and the valve seat will wear out and the tightness will be reduced. Repair sealing surface is a large and...
Valve material material, valve material temperature pressure level
Valve usually consists of valve body, valve cover, valve flap (gate), valve seat, valve stem, heat sink, packing and driving parts (hand wheel, gear box or pneumatic device, electric device, etc.).