See from the valve regulating the institutions and pipe connections

Spin pipe threaded connection, flange connection, not blue crimp connections and welded connections are several. Small control valve is normally rotating people pipe threaded valve connection end is tapered pipe female thread, pipe connection end male thread taper pipe.two position three way valve
 This connection method is applicable to the caliber of less than 2 "control valve body and pipe connections, not suitable for high-temperature conditions. Flange connection due to maintenance, difficult to remove, therefore, need to be installed upstream and downstream of the control valve movable joint. convex method adopted with the supporting flange of the control valve to be connected with bolts and gaskets supporting flange welded on the pipe according to the control valve connecting flange of the type, the type of the supporting flange, for example, a flat flange, blue, ring joint surface flange with the flange should control valve rated working pressure and temperature. the flat flange connection, install the gasket between the two flange surface, the application of the low-pressure, cast iron and copper Quality control valve connected to the installation face flange Pa tight line processing, it is a small groove concentric with the flange when the gasket is installed between two flanges in the bolt under the action of pressing, the gasket will enter Grilled tight line slots, junction seal closer, the convex flange connection suitable for most applications, the use of cast steel, alloy steel control valves. annular joint surface flange for the connection of the pressure control valve, lens gaskets, compression gasket, the gasket flange of the pressure on the convex U-shaped groove to form a tight seal. clamp connections, suitable for gate valves, butterfly valves and other low-voltage, large-diameter control valve connected with external flange grip control valve and gasket placed in the connecting surface, complete valve and pipe connection clamping flange bolts welded connections directly to the control valve and pipe welding solder connections, socket weld or butt weld can be used. the advantage of tightly sealed, the disadvantage is welded connections need Body material can be welded, but not easily removed from the pipeline, so generally do not use solder connections.high temperature solenoid valve