Model HL Combination Light / Sight Glass

The Model HL lighting unit is designed for non-hazardous applications and provides reliable and efficient observation of vessel contents. When combined with a circular sightglass, the HL lighting unit provides glare-free illumination of vessel contents while utilizing only one port. The lighting unit sits on the ID of the sightglass, taking up half of the viewing area for lighting and half for viewing — maximizing efficiency on vessels with limited port availability. Units are equipped with a momentary on/off switch and operate independently of operating conditions inside the vessel.