Selection of valve according to the connection form

1, threaded connections
This connection is usually about the import and export of the ends of the valve processed into taper pipe thread, so screwed taper pipe thread fitting or piping. Because of this connection may appear larger leak channel, so availability sealant. Sealing tape or filler to plug the channel. If the material of the valve body can be welded, threaded connection can also be sealed welding. If the material of the connecting member is allowed to welding, but large expansion coefficient difference or temperature changes in the amplitude range, the threaded connecting member must be sealed welding.
The threaded valve nominal diameter 50mm valve. If the bore size is too large, the installation and sealing of the connecting portion is very difficult.
In order to facilitate the installation and removal of the threaded connection valve, pipe fittings are available in the appropriate location on the piping system color. Nominal diameter 50mm valve socket section as fittings, the thread of the sleeve section will connect the two together.steam solenoid valves
2, the flange connection
Flanged valves, installation and removal is more convenient. However, than threaded bulky, the appropriate price is also higher. Be applied to a variety of diameter and pressure pipe connection. However, when the temperature exceeds 350 ° C, Bolts, gaskets and flanges creep relaxation, significantly reduces the the Bolts load, force big flange connection may have leaked.pneumatic hand valve