Page 22 - Apollo - Industrial Applications Guide

INTRODUCTION:

Many volatile hydrocarbons are human-made chemicals that are used and
produced in the manufacture of paints, adhesives, petroleum products, TYPES:
pharmaceuticals, and refrigerants. They often are components of fuels, solvents,
hydraulic fluids, paint thinners, and dry-cleaning agents.
Liquefied Gases including Fuel Gases
Solvents and Alcohols
CHARACTERISTICS: Toluene
Methylene Chloride
Volatile hydrocarbons are hydrocarbons that are in a liquid state at normal Acetone
pressures and temperatures. They have a high vapor pressure and therefore can
evaporate rapidly. Volatile hydrocarbons have low boiling points, usually less
than 212°F (100°C), and evaporate quickly. Liquefied gases are among these
as they would normally be gaseous at 700°F (371°C). Propane, benzene, and MARKETS:
other components of gasoline are volatile organic compounds (VOC). Some of
the previously listed media can at times be in a liquid state, so it is important to Production of solvents, fuels,
remember to utilize vented valves to prevent over pressurization of the valve plastics, adhesives, and
cavity. Refer to the Vented Valves - Balls & Bodies section of this literature for propellants for aerosols
better understanding of the requirement.

GENERAL NOTE: Some volatile hydrocarbon applications may have Fugitive Emissions
requirements. Also note that if the piping system is where it can see thermal changes then the MATERIALS:
valves will likely need to be vented, especially in the case of liquids. Refer to Vented Valves –
Bodies, Balls Top & Side section of this literature for better understanding of the requirement.
Bronze
Carbon Steel
Stainless Steel

It is always good to check compatibility/
acceptability of selected materials based off
specific application data like concentrations,
temperatures and pressures.

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