as many Carrier reversing valves utilize a 24V coil

Engineered with a 5-foot capillary and a 3/16" x 11-1/2" nickel-plated bulb

it should not be used in drinking water applications due to material specifications

Can I use the 157S-MD to replace older mercury switch models

Conbraco 24-305-03 Valves 318172-701 as many Carrier reversing valvesThe Conbraco 24 305 03 is a high performance liquid level gauge valve engineered for demanding industrial and commercial tank monitoring applications. Constructed from heavy pattern rough bronze, this valve set is designed to provide reliable service in high pressure environments, featuring a 3 4 inch NPT male connection for a secure, leak resistant interface. The internal assembly utilizes a PTFE with Hypalon glass seal and braided PTFE with Aramid