Maxitrol 325-7AL210D-1 1/2 Regulator 321894-709 This primary heat exchanger is

This primary heat exchanger is built to withstand rigorous thermal cycling

but the 3/4" N/C 120V 0-300# 400F performance profile remains identical between both models

making it fully compatible with modern HFC and HFO refrigerants including R-410A

Key Benefits Universal Replacement: Simplifies service by replacing multiple legacy aquastat models with a single 120V unit

Maxitrol 325-7AL210D-1 1/2 Regulator 321894-709 This primary heat exchanger isThe Maxitrol 325 7AL210D 1 1 2 is a high capacity certified line pressure gas regulator engineered for 5 PSI piping systems, specifically designed for applications requiring precise dead end lockup. This 1 1 2" NPT unit features a lever acting design and a factory preassembled Overpressure Protection Device (OPD), ensuring downstream safety by limiting pressure in the event of a regulator failure. With a maximum capacity of 1,250,000 BTU hr, it is a