Description

The Raypak 600019B is a thermocouple pilot generator with a 35 inch lead and a 750 mV output. It is the genuine Raypak part for millivolt heaters.

What it does

A pilot generator sits in the pilot flame and turns that heat into a small electrical output. In a millivolt heater there is no external power, so that output alone is what holds the gas valve open. As the generator ages its output falls, and the first sign is a pilot that lights fine but drops out the moment you release the manual knob.

Check the model list

The catalog data for this part carries two different model lists, one covering the 53 through 155A heaters and another covering the 206A and 266A. Confirm your heater model against both, and treat the note that it may fit other Raypak models as a reason to verify rather than assume. Gas work belongs to a qualified technician.