Durable Construction: Built to withstand the high-ambient cabinets of gas-fired heating systems

ensuring seamless fitment in residential HVAC units

Its UL listed construction meets strict safety standards for commercial and industrial 24 volt power supply applications

Constructed with professional-grade materials to ensure repeatable set-point accuracy

Honeywell TK300-30 Sparco-Trol Ex Els PW 17895 Durable Construction: Built to withstandThe Honeywell TK300 30 Sparco Trol is a high performance hydronic expansion tank designed to maintain system pressure in closed loop heating and cooling applications. With a 4. 4 gallon tank capacity and a 1 2" NPT connection, this steel expansion tank effectively manages the thermal expansion of water to prevent relief valve discharge and piping stress. Field technicians recognize the TK300 30 as the direct ET 30 replacement, offering a seamless swap