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Morrison Bros. Co. - Dubuque, IA - 800-553-4840
246A--0109 PP
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Maintenance
Annual inspection, at a minimum, is required to verify valve condition and operation.
WARNINGS
•
Fire Hazard
– Death or serious injury could result from spilled liquids.
• Follow your employer’s instructions for inspecting valves.
• You must be trained to inspect these valves. Stop now if you have not been trained.
• For your safety, it is important to follow local, state, federal and/or OSHA rules that apply to working inside,
above, or around the storage tank and piping area. Use all personal protective equipment required for working
in the specifi c environment.
• Valves and piping could be under pressure. Liquids and vapors could be expelled from tank piping, valves or
fi ttings while performing maintenance. Liquids and vapors could catch fi re or cause an explosion. Avoid sparks,
open fl ame, or hot tools when working on valves.
Steps
1. Inspect the valve cap gasket for damage or leaks. If either is found replace the cap gasket with an original
replacement from Morrison Bros. Co.
2. Inspect the valve body for damage, leaks, or excessive corrosion. If any are found replace the valve.
3. To replace the cap gasket, drain the pipe of liquid and pressure. Remove the valve cap and old gasket. Clean
the area where the gasket seals on the body and cap. Install the new gasket on the cap. Apply a non-hardening,
fuel resistant thread sealant to the male threads of the cap. Thread the cap into the body and tighten. Do not
over-tighten the cap to the point where the gasket starts pushing out. Introduce liquid back into the pipe and
watch the gasket for leaks. If leaks are found, try tightening the cap slightly. If leaks still persist, replace the
valve.
Failure to follow any or all of the warnings and instructions in this document could result in a hazardous
liquid spill, which could result in property damage, environmental contamination, fi re, explosion, serious
injury or death.
