156 MINSTAC - Fitting Torque Limits

NOTE:
Excess torque will cause the ferrule to crush restricting the flow through the fitting.

Minimum recommended torque: 7 ozf•in (0.005 N-m)
Maximum recommended torque: 21 ozf•in (0.15 N-cm)


Coupling Installation Tools

Torque Wrench - TTTA9500343A


Wrench - TTTA9500427C


Procedure:
  1. Start threading the fitting assembly into the 156 MINSTAC fitting boss by hand.
  2. Tighten the fitting between 7 to 21 ozf•in (0.05 to 0.15 N-m) by slipping the Lee Torque Wrench TTTA9500343A onto the hex of the Coupling Screw. The minimum torque is achieved by pressing the shorter torque arm clockwise until it just contacts the longer arm. To check that maximum recommended torque is not exceeded, invert the Torque Wrench and press the longer torque arm clockwise until the Coupling Screw begins to move. This should occur before the torque arms make contact. After gaining a feel for the proper torque, use of the Torque Wrench may be discontinued.
For more information, please send us your application information via our ASK LEE service. Or contact our application engineers in the USA at 1-800-LEE-PLUG or our representatives around the world.
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