though upright is recommended when using vent limiters

This is the flue box housing only

requiring specific torque settings for secure electrical connection

The Intermatic FD12HC is a heavy-duty 12-hour spring wound timer engineered for precise control of HVAC systems

maximizing thermal efficiency and reducing fuel waste

Sensus 143-IRV-1 Regulator 30067439-890 though upright is recommended whenThe Sensus 143 IRV 1 Regulator is a job site standard for residential natural gas service and light commercial meter sets. Built on the rugged 143 80 chassis, this model features a 1 inch NPT inlet and a 3 8 inch orifice, delivering precise pressure reduction for HVAC burners, unit heaters, and boilers. The integrated internal relief valve (IRV) provides essential overpressure protection, while the green spring is factory calibrated for an outlet