Diaphragm Valve Face Piping Kit Installation Manual Pg. 5 of 52
5/31/12 Rev. F
Grooved Coupling Assembly Instruction
1) Seat rubber gasket over end of pipe 1, making sure that the gasket does not cover the groove
cut in the pipe.
2) Insert end of pipe 2 into rubber gasket, again making sure that the gasket does not cover the
groove in the pipe.
3) Fit coupling halves over rubber gasket making sure that coupling halves are seated into the
grooves of the (2) pipes. Make sure one coupling half has standard thru bolt holes and the
other has hexagonal counter-bored thru bolt holes.
Apply an anti-seize lubricant to the threads of the coupling bolts. Insert bolts into the holes in the
coupling, making sure that the bolt heads fit inside the hexagonal counter-bored holes on one side
of the coupling. Place one washer and nut on each bolt and tighten.
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