This kit is ideal for the corporate aircraft operator or small FBO and is designed for the mandatory combustion heater inspections required by the FAA. It provides all the parts needed to comply with Janitrol and South Wind ADs requiring pressure decay testing and combustion air pressure switch inspections. The kit includes two expansion bulbs, three supply assemblies, two regulators, 0-15 and 0-160 psi gauges, a shut-off valve, 0 F to 55 F temperature probe, water manometer, fuel pressure gauge, caps, plugs, and hoses, and an operations manual. For more information visit www.Hartzell.aero.