The Series 53 is a combination visual and electrical indicator with manual and automatic reset.

Offering both visual and electrical indicator capabilities and manual and automatic reset features, the Series 53 is the most versatile member of Apache’s pigPRO™ Series, a patented line of intrusive pig passage indicators that reliably detect the precise location of a cleaning pig. When a cleaning pig passes the system’s intruding plunger, it activates the plunger and triggers a visual flag indicator, signalling the pig’s location.

The Series 53 includes a thread mounting nipple, standard lower housing with fluorocarbon O-Rings, hemispherical plunger with a flag assembly and weather sealed & explosion proof limit switch. The switch employed on this model is NEMA rated, UL listed and CSA certified to suit most applications.