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Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
This genuine Williams replacement part is built to original factory specifications
allowing for a thermostat-free flow control setup that simplifies field installations
Reliable Operation: The pilot-operated floating diaphragm design minimizes wear and improves cycling performance
The A19ADB-22 features SPST Open High contact action
If the circuit is open at room temperature after pressing the reset button
McDonnell & Miller 51-2-HD Control 30067439-890 This genuine Williams replacement partThe 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
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