API FIG206 blind and plug hammer union 4in.

connection method

1. The connection between the hammer unions and the hose loop
First, wrap a layer of sealing tape on the outer thread of the hose connector and wrap it evenly. When installing the union male head, first put the compression nut over the outer thread of the pipe joint, and then twist the male head on the outer thread of the hose pipe joint.
2. Connect the male head of the union to the female head, put the sealing ring in the female head in place, and hit the three claws of the compression nut with a hammer (clockwise for tightening, counterclockwise for loosening). By the same way, you can also connect the chiksan pup joints and Hammer Union crossovers.
3. Welding connection of union male and female head and hose and other components.The welding method generally adopts butt welding. When welding, the material of the electrode should be similar to that of the base material of the union, and the axis line of the union male and female heads should be aligned with the axis line of the component to be connected. Cooling work or take out the heat-resistant parts in advance to avoid heat conduction from welding damage to the heat-resistant parts such as pipelines or sealing rings. After welding, air cooling should be used to reduce the stress of the welding part to avoid welding defects such as cracks.