McDonnell & Miller EA-157-L Long Electrode Probe for 157S-RBP Boiler Control

The McDonnell & Miller EA-157-L is a 3-inch long replacement electrode conductance probe designed specifically for use with 157-RBP and 157S-RBP series low water cut-off and pump controller units. This genuine OEM replacement part (part number 354107) ensures reliable water level detection in commercial and industrial steam boiler applications.

Key Features:

• 3-inch long electrode probe design for extended reach applications
• Conductance-based water level sensing technology for accurate detection
• Compatible with McDonnell & Miller 157-RBP and 157S-RBP-MD control units
• Provides additional water level monitoring points when used with integral probe systems
• Essential replacement component for maintaining boiler safety and efficiency
• Designed for maximum operating pressures up to 150 PSI

This long electrode probe works in conjunction with the 157S-RBP series boiler controls to provide bi-level pump control and enhanced operating differential. The conductance probe system helps prevent nuisance burner shutdowns and ensures continuous protection against low water conditions in steam boiler systems. Regular inspection and replacement of electrode probes is critical for maintaining proper boiler safety control operation.