you would typically look for the "S" (ODF) suffix in the Parker LLD series

it ensures that heating stages engage and disengage in the correct order

Key Benefits Universal Sub-base Compatibility: Engineered specifically for the Convertastat line and Honeywell thermostat mounting patterns

and discharge gas service applications

For contractors performing preventative maintenance or urgent repairs

Robertshaw 1830-491 Pilot Uni-Kit you would typically look forWhen you're out on a service call dealing with a fouled pilot or a failed thermocouple connection, the Robertshaw 1830 491 Pilot Uni Kit is the fallback assembly you want in the truck. This aerated pilot burner is designed with non linting characteristics, meaning you wont be back in six months clearing out dust bunnies that choked the primary air. It features a 3 way flame pattern and a specialized Hood 6 mounting configuration, which ensures precise