The TG40 transparent gauge provides an illuminated direct liquid-level indication for storage tanks, low-pressure vessels and steam boilers. Basic equipment includes heat-resistant pressure-vessel steel, selectable valve orientation, borosilicate sight glass, BSP G1/2 vent plug, A120-CS PN40 isolation valve in DN20 or DN25, AV250 drain valve and LEDSecure Slim IP66 illumination.

Options include stainless steel, customised process connections, vent valve, alternative isolation/drain valves, an inclined arrangement and 24 VDC illumination.