replacing part numbers LB-65734B and 43J5601

Full Flow Design: A 3/4 inch orifice maximizes GPM throughput

OEM Precision: Guaranteed compatibility with Berko and QMark units

Features a high-output 10kV secondary voltage for reliable fuel atomization ignition

This OEM replacement part is essential for preventing heat exchanger damage by disengaging the gas valve and activating the blower motor when internal plenum temperatures exceed safe operating parameters

Hydrotherm 02-2406 Aquastat 320788-702 replacing part numbers LB-65734B andThe Hydrotherm 02 2406 Aquastat is a mission critical immersion type temperature controller engineered for high performance hydronic systems. Featuring a Single Pole Single Throw (SPST) switching configuration, this rugged aquastat relay provides precise thermal regulation across a broad 40F to 240F operating range. Designed for direct insertion into the medium, the Hydrotherm 02 2406 functions as a reliable high limit or low limit control, ensuring