APU-874 Air purging unit

The air purging unit model APU-874 is a mechanical unit designed to keep clean the window of the mounting unit SAM-871 and protect the spark detector RIV-601P/S from the high temperatures of the duct (max 120°C) by means of an air jet.
Brass universal 3/8”M air fitting, Parker (female socket and male moving plug for 10 mm pipe).