Carrier HT01AH851 Transformer 321702-401 0 Cv valve body is

0 Cv valve body is engineered for long-term durability in professional environments

Leak Prevention: High-tolerance threading and Rotalock design provide a superior seal compared to standard aftermarket alternatives

also known as the Berko L130F temperature limit switch

A veteran tech will use a manometer to measure the actual draft pressure at the switch port

Its robust construction ensures stable flame rectification and long-term durability in demanding furnace and boiler environments

Carrier HT01AH851 Transformer 321702-401 0 Cv valve body isThe Carrier HT01AH851 is a high capacity 1000VA control power transformer engineered for demanding industrial and commercial HVACR applications. Designed for versatile power distribution, this unit features a dual voltage primary 240 480V side and a 120 240V secondary output, providing the necessary step down for control circuits, contactors, and high draw relays. As a genuine OEM HVAC replacement part, it ensures precise electrical characteristics