b. Installation. (Figure 4-6)
Thoroughly clean threads of defueling coupling boss (6) on filter vessel sump (5).
Wrap male pipe threads (7) of defueling coupling assembly (4) with 3-4 complete turns of teflon tape in a right
hand (clockwise) direction. Apply an even coat of thread sealant over the teflon tape.
Install defueling coupling assembly (4) in filter vessel sump (5).
Close manual vent valve (2).
Place grounding cable in storage location.
Figure 4-6. Defueling Coupling Assembly