Sensus 143-80-6-3/4 Regulator 320788-704 it utilizes thick metallized polypropylene

it utilizes thick metallized polypropylene film and a vacuum-sealed construction to prevent dielectric breakdown and environmental contamination

or dampers

Built for the rigorous demands of industrial unit heaters like the Reznor UDAP-75 and the UDAS series

Durable Construction: Heavy-duty bellows and internal components designed for industrial-duty cycles

and Air Ease heating units

Sensus 143-80-6-3/4 Regulator 320788-704 it utilizes thick metallized polypropyleneThe Sensus 143 80 6 3 4 Regulator is a specialized domestic and light commercial gas service regulator engineered for high precision pressure management in critical HVACR applications. This specific model features a low pressure cut off (LPCO) mechanism, providing an essential safety layer that automatically terminates gas flow if the inlet pressure drops below the required threshold for safe operation. Built with a 5 16" orifice and 3 4" NPT