CAUTION: USE LP-GAS CONTAINERS IN PROPER POSITION
Most LP-gas appliances for cooking, heating, lighting, water heating and refrigeration are
designed to operate on LP-gas vapor only. Therefore, all LP-gas containers designed for vapor
service must be transported, installed and used in the proper position. Do not transport, install
or use a vertical cylinder in a horizontal or upside down position. Proper care must be taken to
position a horizontal container in the correct position for vapor withdrawal. Liquid LP-gas could
enter the system designed for vapor only, possibly creating a hazardous condition.
Always close the valve and install a POL plug on a POL valve or a dust cap on an ACME/Type 1
valve when transporting or storing disconnected containers (full or empty).
All LP-gas containers must be securely oriented in the proper position for intended use.
FILLING YOUR LP-GAS CONTAINER
Only qualified persons should fill your LP-Gas containers.
CAUTION: OVERFILLING IS HAZARDOUS!
Do not allow your LP-gas container to be overfilled. Stop filling when liquid appears at the fixed
level gauge. Bleed off excess propane in a safe area. Most LP-gas containers are equipped with
a fixed liquid level gauge which contacts the liquid level at 80% of container capacity, allowing
20% for expansion. LP-gas containers not equipped with a fixed liquid level gauge can only be
filled by weight.
LP-gas containers must not be filled over 80% of total capacity. Propane expands approximately
1.5% for each 10° F temperature rise. Pumps do not stop filling “automatically.” Pumps “by-pass”
when containers are dangerously filled to total capacity. If overfilled, excessive pressure could
develop within the container causing the relief valve to open and release flammable gas.
The fixed liquid level gauge is used only to determine safe fill levels and does not indicate lower
levels. LP-gas containers are available with visible gauges that monitor the amount of gas in the
container at all times, reading from full to empty. Do not use visible gauges for filling.
PURGING OF AIR FROM LP-GAS CONTAINERS
Air in LP-gas containers is a contaminant. Purging is done prior to initial filling to remove the air. If
the container is not properly purged, air in the container dilutes the LP-gas vapor. Failure to purge
may cause excessive tank pressure, slow filling and poor appliance operation. Appliances then
require constant adjustment and pilot lights won’t stay lit. This condition would exist until all air is
depleted, leaving pure LP-gas vapor. Have your LP-gas container properly purged.
1.5 - Propane Operating Safety, continued
SECTION 1
SAFETY
055838 Page 31
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