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CYLINDER, REGULATING SYSTEM, FUEL LINE
INSTALLATION
CYLINDERS
Cylinders used in LPG systems shall be constructed, tested, marked, maintained
and re-qualified for continued service in accordance with DOT regulations.
No repairs or alterations shall be made on any cylinder.
Cylinders that have been subject to fire or physical damage shall not be returned
to service unless re-qualified.
LPG cylinders shall be permanently and legibly marked in a conspicuous manner
on the outside to show the correct mounting position. The method of mounting
shall be designed to position the cylinder correctly.
The cylinder shall be returned to an authorized fuel distributor for refilling.
Cylinders shipped by land or air freight must be packed and marked in
accordance with DOT regulations.
Only systems using LPG cylinders of the vapor withdrawal type are permitted.
Cylinders designed or installed so as to admit liquefied gas into any other part of
the system are prohibited.
CYLINDER VALVES AND SAFETY DEVICES
Each LPG cylinder shall have manually operated shut-off valve threaded directly
into the cylinder outlet, the valve outlet conforming to CGA connection number
510. The valve shall be equipped with a securely attached hand wheel for
convenient operation without the use of a separate wrench.
For Marine use.
A readily accessible shut-off valve or electrically operated
solenoid shall be installed in the low or high pressure supply line to each
attended appliance. The valve or its control shall be operable from within the
vicinity of the appliance and its control readily accessible in the event of a fire at
the appliance. If the cylinder valve is readily accessible from the vicinity of the
attended appliance, the above shut-off valve on the supply line is not required.
All LPG cylinders shall be provided with a safety relief device specifically
designed for LPG as required by DOT regulations.
A threaded protective cap and retaining device to protect the threads of the
cylinder valve during transit and storage shall be supplied.
In addition to the valve required at the cylinder, a dual cylinder system shall be
provided with a two-way positive shut-off valve at the cylinder manifold.
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