The Oil Sight Glass & Level Monitor (OSGL) installs at the drain port of an oil reservoir and allows the user to view the oil color, clarity, and accumulation of water or other contaminates. The strong, cast acrylic body allows for viewing of the oil level from any angle. The spring loaded drain valve is positioned to quickly discharge any water before it damages the oil lubricity. Red and green decals are included with the OSGL to mark upper and lower limits, or to designate running oil level and idle oil level. Each OSGL comes with a 2 micron breather, which allows the oil level to equalize with the level inside the system. If you require a closed loop system, install the OSGL without the breather and use the top opening to port back into your equipment.
A Dual Port Oil Sight Glass & Level Monitor version is available with a second 3/8" NPT port opposite the installation nipple to allow the installation of a Sample Port for oil sampling. Learn how to easily draw an oil sample by watching this video.
The Esco Oil Sight Glass and Level Monitor (OSGL) provides continuous and instantaneous monitoring of oil clarity, water contamination and oil level. This all-in-one tool allows for a quick and easy inspection for predictive maintenance professionals to easily assess what is going on in their equipment. See below for product details, specifications, temperature and pressure ratings and size and part number chart.