The “Isolator EXP” tankless water heater service valve set contains an inlet and outlet valve that allows for one-man full port diagnostic testing, cleaning or draining of the system and heater with quarter turn ball valve ease.
The ProMax® XL Circulating Loop Heat Exchanger is designed for installation with ProMax® SL residential gas water heaters to provide domestic hot water plus an isolated source of hot water for radiant floor heating, fan coil heating, hydronic air-handling units and other closed-loop applications.
The 2011BV quarter-turn frost-free Sillcock has: an anti-Siphon vacuum breaker; an identical flow rate as the multi-turn 2011 model; a metal handle, packing nut and vacuum breaker cup; a threaded vacuum breaker with o-ring seal for quiet operation; thick rubber stem packing; and a chrome-plated professional finish.