Page 421 - 4300 Catalog Cover.pdf

4300 Catalog Assembly / Installation
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
T11
CONDITION
Missing or improper O-ring
O-ring pinched or extruded
Evidence of yielded or
cracked flange head, tube
or hose end
Components do not mate or
gap is too large
Port has severe scratches or
nicks in seal area
Clamp halves are bent
Bolts are bent
PROBABLE CAUSE(S)
• Assembly/re-assembly
oversight
• Improper tightening
procedure
• Misaligned tube or hose
connection
• Proprietary flange or pressure
series matching problem
• Mishandling or abuse
• Over-pressurization or over-
torque
• Bolts are too weak or over-
torqued
RECOMMENDATION
• Replace with proper O-ring and
re-tighten connection using incremental
alternating tightening procedure
• Replace O-ring and re-tighten
connection using incremental
alternating tightening procedure
• Re-bend or re-route hose/tube lines to
eliminate misalignment
• Properly identify all components—most
proprietary flanges use standard Code
61/62 bolt patterns and threads but are
not usually interchangeable
• Resurface the port to remove scratches
and nicks
• Replace clamp halves and tighten to
proper torque
• Replace bolts with grade 5 or better;
retighten to proper torque
Flange (i.e., ISO 6162 4-Bolt)
Troubleshooting Port End Connections
Dimensions and pressures for reference only, subject to change.
Port End Assembly