Sec. 15: Fluid Level

Pneumatically controlled dump valves.
4.5-inch (114 mm) dial level Swichgage.
Lube level maintainer
Level maintainer
Liquid Level Switch
Automatic level control for gas scrubber applications.
Oil level regulator for lubricators.
L129 Series
The lube level Swichgage.
Lube level regulator.
Bilge level switch systems.
Hydrostatic head level switches.
Liquid level switches.
An explosion-proof crankcase level switch.