This SPST aquastat features a liquid-filled 11-3/16" fast response bulb that sits directly in the water stream

providing flexibility across various regional installations

Always verify your specific model number against the technical data sheet

Featuring a robust 316 stainless steel body and a 1-inch NPT connection

For non-native applications

Utica-Dunkirk 240009669 Control Board 319825-402 This SPST aquastat features aThe Utica Dunkirk 240009669 Control Board is a critical genuine OEM replacement designed for ECR International boilers. This ATB control board, specifically the 2 4 element Revision C, manages the sequence of operation and safety timings to ensure your hydronic system maintains precise thermal regulation. When a furnace or boiler exhibits intermittent ignition failures or erratic limit cycles, installing this factory spec Utica boiler circuit board is