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Xylem-McDonnell & Miller RB-24SE Low Water Cut-Off 24V

Xylem-McDonnell & Miller

$152.95

In Stock — 10+ available

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SKU:
RB-24SE
Product Type:
Low Water Cut-Off (LWCO) Control
Subcategory:
Boiler Safety Control
Application:
Residential
System Type:
Boiler
Installation Type:
OEM Replacement
Voltage:
24V
Voltage Class:
Low Voltage
Phase:
Single Phase
Temperature Range:
32°F to 120°F (ambient); -40°F to 120°F (storage)
Pressure Rating:
160 PSI
Fuel Type:
Natural Gas
Inlet Size:
3/4" NPT
Connection Type:
NPT
Material:
Brass (threads)
Control Type:
Non-Programmable
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Flat-rate shipping. The same price to anywhere in the 50 states.

Ships same or next business day · UPS Ground, typically 1–5 business days.

The McDonnell & Miller RB-24SE is a 24V low water cut-off (LWCO) control for residential hot water boilers. It automatically shuts down the burner when water level drops below safe levels and restarts when water returns to normal. Features a self-cleaning probe (5-year maintenance interval), universal wiring harness compatible with modern gas boilers, test button for diagnostics, and dual LED status indicators. cULus listed.