Foul-Resistant Seat: The seat is positioned above the discharge level to ensure gravity prevents sediment and water from being trapped

Heavy-Duty Construction: Built to withstand the rapid thermal cycling typical of commercial and industrial unit heaters

Safety switches must match the manufacturer's specified temperature rating (280F for this model) to ensure the system reacts correctly to flue gas backup

or a total failure of the compressor to engage despite receiving 24V from the thermostat

Johnson Controls VG7241ST+3008BP Valve Assembly R-410A Foul-Resistant Seat: The seat isThe Johnson Controls VG7241ST+3008BP is a 2 way normally open pneumatic globe valve engineered for precision control in low pressure steam and hot or chilled water applications. Featuring a 2 inch NPT connection and a 46. 2 Cv rating, this assembly utilizes an equal percentage flow characteristic to maintain stable modulating control even under fluctuating system pressures. The valve body is constructed from durable cast bronze with brass trim,