1.1 These minimum requirements cover the following types of anhydrous ammonia and liquefied petroleum gas (LP-Gas) valves that are used to control the flow of liquid and/or vapor into and out of containers, or in piping systems between containers, or between containers and utilization equipment, and are for use at temperatures within the range of -40 °C (-40 °F) to 55 °C (130 °F):
a) Shutoff Valves (primary or secondary, and manual or automatic),
b) Excess Flow Valves,
c) Back Pressure Check Valves,
d) Filler Valves,
e) Vapor Return Valves,
f) Actuated Liquid Withdrawal Excess-Flow Valves,
g) Multiple function valves,
h) Internal valve,
i) Emergency shutoff valve,
j) Lever operated transfer valve, and
k) LP-Gas Hose Nozzle Valve.
