Constant Level Lubricators With Oil Level Sights automatically maintain a fixed liquid level in a bearing housing or gear box using the liquid seal principle. This constant level lubricator features a large sight for viewing the liquid level and condition. Constant level lubricators can be used on sleeve bearings, anti-friction bearings, gear boxes, pump housings, ventilating fans and blowers, moistening pads, and any other application demanding the maintenance of a constant liquid level.
When liquid consumption causes the liquid in the bearing to recede, the liquid seal on the inside of lubricator is temporarily broken, allowing air from the air vent to enter the lubricator’s reservoir. This causes oil to be released from the lubricator into the bearing until the proper liquid level is reached, at which time the liquid seal in the lubricator is reestablished. For optimum performance, it is recommended that the 1/8” female NPT air vent be piped back to the bearing housing or gear box to equalize any existing pressure or vacuum. Piping the air inlet also creates a closed circuit that prevents dust and dirt from contaminating fluids.
Constant Level Lubricators With Oil Level Sights feature a unique, mess-free design that allows the reservoir to be easily refilled through a top filler cap. A shutoff valve holds the liquid in the reservoir when the filler cap is removed. The lubricator resumes normal functioning after the cap is screwed down again. It is important that the filler cap is screwed down tightly to ensure proper operation.
