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3
Procedure
1. Remove the valve stem and inspect both o-rings. Replace any that show
signs or wear or damage.
2. Replace the valve stem and secure it in place with the safety pin.
3. Screw the valve stem on the HTHP Pressure Relief Tool into the valve
stem port on the cell cap.
4. Point the vent pipe away from people and equipment.
5. Slowly turn the t-handle clockwise. You should feel some resistance and a
small burst of released pressure when the pin punctures the obstruction.
6. Slowly turn the t-handle counterclockwise. The remaining pressure will
vent when the pin is free of the obstruction.
7. Unscrew and remove the valve stem from the cell cap.
8. Clean the HTHP Pressure Relief Tool:
a. Remove the safety pin and valve stem.
b. Flush the valve stem, body, and vent pipe with water (for water-based
fluids) or solvent (for oil-based fluids).
c. Allow all components to dry before reassembling.
T-handle
Vent Pipe
Safety Pin
Valve Stem
Drill Bit
