High Pressure Laboratory

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Instructions for Installing Bomb Heads

Before installing the cap, check to see that the bottoms of the head bolts are roughly flush with the inside surface of the cap.

Screw the cap on the bomb until contact is made with the spacer on the inner head and then loosen the cap ~1/8 turn.

Tighten the head bolts on both small and large bombs according to the sequence shown below and the following schedule:

  • 1st round: Tighten the bolts lightly with a wrench until contact is made between all the bolts and the spacer on the inner head.
  • 2nd round: Tighten to 150 inch-pounds with a torque wrench.
  • 3rd round: Tighten to 300 inch-pounds with a torque wrench.
  • 4th round: Tighten to 350 inch-pounds with a torque wrench.

HI-pressure bomb diagram

University of Illinois at Urbana-Champaign
High Pressure Laboratory
School of Chemical Sciences
Roger Adams Lab Penthouse
600 S. Mathews Avenue
Urbana, IL  61801
Dr. William A. Boulanger
Faculty Advisor
wboulang [at] illinois [dot] edu
217-621-4023 (cell)
scs-webmaster [at] illinois [dot] edu