This SPST auto reset limit is identified by its distinct green dot

Can this valve be used for R407C systems

Built with a durable aluminum housing

Is this kit compatible with 1" or 3/4" Apollo valves

You can measure the flame signal by connecting a DC micro-ammeter to the FC+ and FC- test pins

Dwyer Instruments A-331 Filter Vent Plug 321894-706 This SPST auto reset limitThe Dwyer Instruments A 331 is a professional grade 1 8" NPT filter vent plug engineered to protect sensitive pneumatic equipment from intake contaminants. Constructed with a durable nylon body and a sintered metal filter, this component is essential for maintaining the integrity of differential pressure gauges, such as the Magnehelic and Capsuhelic series, in high dust or industrial environments. The porous sintered metal element provides excellent