McDonnell & Miller 51-2-HD Control 30067439-890 so always verify the required

so always verify the required operating temperature against the 250°F limit of this 4290 series model

The A19ADB-22 features SPST Open High contact action

Precision Performance: Maintains a ±

If the circuit is open at room temperature after pressing the reset button

McDonnell & Miller 51-2-HD Control 30067439-890 so always verify the requiredThe McDonnell & Miller 51 2 HD is a heavy duty head mechanism only (Part Number 135100) designed specifically for field replacement on Series 51 2 mechanical water feeders. This unit is engineered for low pressure steam and hot water boiler applications, supporting systems with a maximum vessel pressure of 35 PSI. As a specialized low water cut off (LWCO) component, it features a snap acting SPDT switch that provides simultaneous feed control and