OM-Vaporaire AirVapor Mixing Tank - Model V31.5-5.pdf

This is an equipment operations manual from Sam Dick Industries for a 30" Vaporaire Air/Vapor Mixing Tank Model V-31.5-5, manufactured in 1990 for Plant Systems, Inc. The manual details a propane/air mixing system with a capacity of 42,000,000 BTU/HR and outlet pressure of 5 PSIG, featuring three 3/4" venturi trains each with 10,500,000 BTU/HR capacity. The system is designed to mix LPG vapor under pressure with ambient air to produce mixed gas with specific BTU content at pressures up to 12 PSIG, complying with NFPA Pamphlets 58 and 70 requirements and Factory Mutual Research (FM) approval standards.

The equipment specifications include electrical requirements of 120V/3A or 220V/1.5A single phase power, mechanical specifications for a 30" diameter ASME pressure vessel rated for 50 PSIG at 650°F, and detailed safety controls including tank relief valve (15 PSIG), low vapor pressure switch (35 PSIG), and high tank pressure switch (10 PSIG). The manual provides comprehensive installation instructions, operational procedures, adjustment guidelines, and wiring schematics. Key components are sourced from established manufacturers including Fisher Governor Company for regulators and relief valves, Conbraco Industries for shut-off ball valves, and ASCO for solenoid valves.