Ductile iron couplings assembly

Last updated on Tue, 07/26/2011 - 16:46

Ductile iron couplings: installation features

Couplings are supplied pre-assembled.

 In certain applications, it can be beneficial to apply a small amount of lubricant on the lip of the rubber gasket to ease its positioning.

Slacken bolts on coupling to
fullest extent, removing the
bolt(s) from one side to ease
assembly and remove rubber

Place the rubber gasket over
the end of the pipe or fitting,
ensuring the central register
is abutted against the spigot


Push the second pipe or
fitting into the gasket again
ensuring that the spigot is
abutted against the central


Loosely assemble the
coupling around the gasket.


Check alignment of assembly
before tightening the bolts.



Coupling bolts on all sizes are M8
and require special allen socket adaptor.