Expanded Outlet Design: A 2-inch expanded outlet reduces backpressure during discharge

With an overall length of 1-15/16 inches and a 2-7/16 inch bolt circle

and FX industrial heaters

By replacing worn internal levers and pins

though this unit is typically utilized in its standard 1

Tekmar Controls 257 Control 321894-709 Expanded Outlet Design: A 2-inchThe Tekmar Controls 257 Control is a purpose built 24Vac domestic hot water two stage boiler control designed for high demand applications such as hotels, laundromats, and multi family residential complexes. This sophisticated microprocessor control provides high accuracy domestic hot water temperature regulation by effectively staging up to two on off boilers or a single two stage boiler. Utilizing an NTC thermistor 10k ohm sensor, the 257 maintains