The KENCO Armored Level Gauge (Model ESP or ST) is a rugged tubular liquid level gauge that offers maximum impact from mechanical stress and impact. Product benefits include lower installation costs, reduced maintenance, unobstructed visual indication for your application. The gauge is adaptable to many different types of process connections. Armored frame and 90 degree instrument tees are available in a wide variety of materials. Wetted materials are limited to the O-Ring material, PTFE sight tube holder, and glass. The level gauge will operate in a medium pressure range up to 500 PSI. The ESP series offers extra glass protection from an outer tube of polycarbonate, which surrounds the gauge glass.