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The McDonnell & Miller Model 93-7Bis a mechanical float-type modulating level controller. The level controller is piped to an external water column via 1” NPT equalizing pipes. The 93-7B controller utilizes a 0–135 ohm modulating (potentiometer slide wire) control signal to proportionally control the makeup valve. When used on a boiler, the controller also includes 1 set of electrical contacts for burner control and one set of electrical contacts for low level alarm. The 93-7B is rated for a maximum pressure of 150 PSI. Within boiler feed systems, the McDonnell & Miller 93-7B is commonly paired with an electronic modulating makeup valve to maintain a steady water level within the tank. The 93-7B is typically used for deaerators and large atmospheric feed tanks (500+ gallons).
Features- Modulating level control maintains steady water level
- Maximum Operating Pressure: 150 PSI
- Includes cast iron float housing
- Connects to tank via 1” NPT equalizing pipes
- Burner switches rated for 345 VA (120/240 VAC)
- Proportional makeup control signal: 0-135 ohms at 24 VAC
Additional Information
| SKU | MM93-7B |
|---|---|
| Manufacturer | McDonnell & Miller |
| Weight (in lbs) | 35.5000 |
| Resources | You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING |
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