Section 2
Installation
72183178
4-2016/Rev 0
ORIGINAL INSTRUCTIONS
2-11
Proper piping supports and guides must be provided. End connections will not
support the tubing load alone.
Anti-Vibration Connections
The bending stresses resulting from excessive vibration or shock on the threaded area of the
tubing can cause premature failure at the back of the thread. Anti-vibration connections must be
used when tubing will be subjected to vibration, rotation and movement.
The anti-vibration collet gland transfers the stress to the unthreaded section of the tubing, and the
gripping action of the collet strengthens the entire assembly.
1.
Deburr the tubing ID and thoroughly clean
the tubing threads.
2.
Slip the gland nut and the collet onto the
tubing.
3.
Apply Pure Goop to the threads on the
tubing. Screw the collar onto the threaded
end of the tubing leaving 1-1/2 to 2-1/2
threads exposed on the tubing between the
collar and the coned tubing.
4.
Apply Pure Goop to the male threads on the
gland nut and insert the tubing into the
connection. Engage the gland nut and
tighten finger tight.
5.
Tighten the gland nut to the torque specifications in Table 2-8.
When a flexible whip is used to allow cutting nozzle movement, anti-vibration fittings and proper
supports and guides must be provided to prevent failures from non-water related stresses. The
whip will only flex in a single plane without being subjected to torsional stress. The use of high
pressure swivels is strongly recommended.
Table 2-8
Torque Specifications
High Pressure Connections
1/4” Tubing
25 ft-lb (34 Nm)
3/8” Tubing
50 ft-lb (68 Nm)
9/16” Tubing
110 ft-lb (149 Nm)