Siemens Building Technology 257-02030 Valve Assembly 321894-709 functioning as a primary high-limit

functioning as a primary high-limit control to prevent heat exchanger overheating

the BAYSDEN004 provides an effective decibel reduction of approximately 3 to 10 dBA

25" precision-molded design ensures maximum flow efficiency and reduced turbulence

the switch closes to allow the heater to maintain a steady thermal profile

This fan sequencer is designed to fit a wide range of specific Reznor unit heaters and furnaces

Siemens Building Technology 257-02030 Valve Assembly 321894-709 functioning as a primary high-limitThe Siemens Building Technology 257 02030 Valve Assembly is a high precision solution for terminal unit control in hydronic systems. This 2 way normally open pneumatic valve is engineered with a 1 2 inch NPT connection and a robust forged brass body designed to handle water and 50% water glycol solutions. With a 0. 4 Cv equal percentage flow characteristic, it ensures stable modulating control for convectors, fan coil units, and reheat coils. The