CHANGING CHEMICAL CYLINDERS
34
Empty cylinders being returned to Foam Supplies, Inc. for refilling must be sealed and the pressure
relieved to 75 p.s.i. for froth systems and 25 p.s.i. for liquid-blown systems. This procedure is necessary in
preventing possible contamination in the cylinder fittings.
1. Make sure the threads and ball valves of all fittings are clean and well lubricated with petroleum jelly,
grease or mineral oil. Marked as #2 or #3 on diagram below.
NOTE: A-SIDE CYLINDER IS THE ONLY ONE WHICH REQUIRES LUBRICATION INSIDE
STRATOFLEX FITTING.
2. Replace Stratoflex Caps on cylinders. Marked as #2 or #3.
3. Replace Sealing Dust Caps onto the fittings. Marked as #2, #3, #4 and #6.
4. Failure to seal the empty cylinders on return will result in additional servicing and additional charges.
IMPORTANT: DO NOT REMOVE CYLINDER FITTINGS! REMOVAL OF FITTINGS COULD RESULT
IN VIOLATION OF FEDERAL LAWS SUBJECT TO PENALTIES AND FINES, AND WILL RESULT IN
CHARGES FOR THE COST AND LABOR TO REPLACE FITTINGS.
Empty cylinders being returned to Foam Supplies, Inc. for refilling must be sealed and the pressure relieved.
For cylinders being shipped as UN3500 the pressure should be at 75 psi. This procedure is necessary in
preventing possible contamination in the cylinder fittings. For liquid-blown blown systems the pressure must
be reduced to 25 psi or lower in order to be considered non-hazardous. Failure to do so is a violation of
federal regulations and can result in fines and penalties by DOT and/or OSHA.
SEALING EMPTY CYLINDERS FOR RETURN
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