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For precise manifold pressure
snap-action attachment
The unit provides an equal percentage flow characteristic with a 7
Lockout can be cleared by cycling the thermostat or removing the 24 VAC input power for at least 5 seconds
Optimized for high-pressure applications
McDonnell & Miller 94-M Pump Controller THPU32HP7Y For precise manifold pressureThe McDonnell & Miller 94 M is proof of heavy duty reliability for high pressure steam applications, serving as a robust combination low water cut off and pump controller. Designed specifically for steam boilers with a maximum pressure of 250 psi, this unit utilizes manual reset SPDT switches to ensure precise water level management and failsafe protection. The dual snap acting switches prevent rapid cycling, reducing mechanical wear on your pump
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