Page 10 - Parker - Assembly/Installation

4300 Catalog Assembly / Installation
Port End Assembly

Troubleshooting Port End Connections

Parallel (SAE, BSPP and metric)

CONDITION PROBABLE CAUSE(S) RECOMMENDATION

Washer is too loose (moves • Washer damaged • Replace fitting
by its own weight or rocks too
much on the undercut)

Fitting threads are distorted • Over-torqued • Replace fitting and tighten to proper
torque
• Mixed threads • Determine correct thread type

Several scratches or nicks on • Port face contaminated (dirty) • Reface the port
the port face

Spot face of port is smaller • Improper port tool was used • Reface the port
than washer diameter • Wrong fitting selected for port • Select a proper fitting

Port threads are distorted • Fitting over-torqued • Replace component
(yielded)
Leakage persists after • Damaged O-ring • Replace O-ring with new quality O-ring
locknut has been torqued (90 durometer) and reconnect fitting to
proper torque
• Damaged washer • Replace fitting
• Improper assembly • Follow proper assembly procedure

Washer distorted, allowing • Exposed upper thread forced • Replace fitting, using proper
opportunity for O-ring to washer into port during installation techniques for adjustable port
extrude assembly (over-torquing ends
makes this more prevalent)

Dimensions and pressures for reference only, subject to change.

S10 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd