Brochure

Grips before it seals
The Collet (gripper) has
stainless steel teeth which
hold the tube firmly in
position while the O-ring
provides a permanent
leakproof seal.
O-ring provides a
leakproof seal
Collet
Stainless Steel teeth
grip the pipe.
To make a connection, the tube is simply pushed
in by hand; the unique patented John Guest
collet locking system then holds the tube firmly
in place without deforming it or restricting flow.
MATERIALS OF CONSTRUCTION
John Guest Fittings are made up of three
components:
Bodies are produced in acetal copolymer or
polypropylene.
O-rings are produced in Nitrile or EPDM.
Collets are produced in acetal copolymer or
polypropylene with stainless steel teeth.
How to make a Standard Connection
CUT THE TUBE SQUARE
Cut the tube square and remove burrs
and sharp edges. Ensure that the
outside diameter is free from score
marks. For soft or thin-walled plastic
tubing we recommend the use of a
tube insert.
MAKING A GOOD CONNECTION:
PUSH UP TO TUBE STOP
Push the tube into the fitting and up to the tube stop.
PULL TO CHECK SECURE
Pull on the tube to check that it is secure.
Test the system before use.
TO DISCONNECT Push in collet and remove tube
To disconnect, ensure that
the system is depressurized,
push the collet square against
the fitting. With the collet held
in this position the tube can
be removed.
4.