The BASO H91AA-4C REVB is an automatic gas shutoff valve designed for safe and efficient gas flow control. It features 1/8-inch NPT inlet and outlet connections and operates at 120 volts.  The valve is compatible with natural gas, liquefied petroleum (LP) gas, and LP gas-air mixtures, handling capacities up to 70,000 BTU/hr.  It is rated for a maximum inlet pressure of 0.5 psi and functions effectively within ambient temperatures ranging from -40°F to 175°F (-40°C to 79°C).

This electrically operated valve automatically opens and closes based on demand signals from a thermostat or other controlling devices.  It is suitable for use in heaters, wall furnaces, commercial cooking equipment, water heaters, boilers, generators, and commercial dryers.

The H91AA-4C REVB is recognized by Underwriters Laboratories (UL) and the Canadian Standards Association (CSA), ensuring compliance with stringent safety and performance standards.  This replaces part number H91AA-4 Automatic Gas Valve.