making it compatible with modern anticipator-type thermostats

Functionally identical to the 80M2901 and often used as a direct OEM furnace replacement part for the 20434202 and 28M96

supporting 150 psi maximum operating pressure

Common Questions from the Field:

Check your chimney for bird nests or debris

Siemens Building Technology 599-03152 Valve 326058-755 making it compatible with modernThe Siemens Building Technology 599 03152 is a professional grade Flowrite 599 Series globe valve engineered for precision mixing in demanding hydronic systems. This 2 inch NPT 3 way mixing valve features a heavy duty UNS CA 844 bronze body paired with stainless steel trim to ensure long term durability and resistance to scaling in heating and cooling applications. With a high 40 Cv flow capacity and an ANSI Class 250 pressure rating, this valve is