Ensuring an easy "pull-through"
- Following the UMI Ferrule
Selection Procedures, select the proper UMI
ferrule for you application.
- Push ferrule onto hose using up
to approximately 40 lbs. of force. Always allow
3/16" to 1/4" space between hose end and inside
front surface of ferrule. Hose should cover all
ferrule and body serrations. Do not push the
hose to the front surface of the ferrule.
- Check fit of ferrule by
inserting coupling body into hose and inspecting
the space between hose O.D. and ferrule I.D. The
ferrule should remain stationary from the
line-to-line fit, or loose to the extent whereby
a standard #1 paperclip (1/32") will fit snugly
between the surfaces of the hose and ferrule in
- Lubricate the inside surface
of the coupling body. Recommended
lubricants include Lithium Grease, Moly
Disulfide or any other equivalent E.P. type
- Do not lubricate the punch!
Any lubricant placed on the punch will be
deposited on the inside wall of the hose,
thereby reducing the coupling's holding power.
The remaining lubricant will be shaved off the
punch at the entry point of the coupling body,
resulting in a dry, difficult "pull-through".
- Proceed with expansion.
- After expansion, check
the entire inside surface of coupling
shank for smoothness.