The Trabon Spra-Control Valve automatically allows pressurized air to enter the air-lube mixing nozzle when supplied with gear lubricant under pressure. The Spra-Control Valve also shuts off the pressurized-air supply to the nozzle when the lubricant pressure ceases.
Lubricant, oil or grease, can be supplied directly from the pump, as in the case of a single isolated spray; it can also be supplied from a metering manifold or feeder (Trabon Type M or MX) which feeds several Spra-Control Valves. In some cases where multi-purpose lubricant is used, bearing taps and gear sprays may be served by the same pump and manifold system. Air-lube nozzles providing normal and wide cone spray patterns are of the non-clogging external mix type. Minimum air pressure required is 20 psi, maximum is 150 psi.