See TRIDENT MARINE
L.P.- (Liquefied Petroleum) GAS SYSTEMS:
Trident Marine: LP Gas
Excerpted from ABYC Section A-1
LIQUEFIED PETROLEUM GAS (LPG) SYSTEMS
Lines shall be corrosion
resistant metallic tubing such as annealed copper tubing, standard type, Grade K or L, conforming to ASTM B88-75a, Specifications for Seamless Copper Water
Tube, with a wall thickness of notless than 0.032 inches (0.815 mm).
Lockers used to contain LPG cylinders, cylinder valves, regulating equipment
devices shall be designed to minimize the likelihood of use as a gear storage
locker and shall be,
vapor tight to the hull interior
located above the waterline, and
constructed of, or lined with, corrosion
resistant materials, and
shall open only from the top with
a gasketed cover that shall latch tightly, and
shall be capable of being quickly and conveniently without tools.
In addition to the valve required at the cylinder, a multiple cylinder system shall be provided with a shut-off valve, or automatic check valve, at the cylinder manifold so that each cylinder can be isolated from pressure feedback from other cylinders.