Pneumatic / Electric Lube Sentry Valve The Lube Sentry Valve provides automatic warning and shutdown of compressors, pumps and engines when oil is not flowing properly to primary dividers in series type lube systems. PNEUMATIC LUBE SENTRY VALVE Pneumatic shutdown can be achieved with the Pneumatic Lube Sentry which meets all hazardous condition area requirements. ELECTRIC LUBE SENTRY VALVE For electric shutdown of machinery, the Electric Lube Sentry is available. DESCRIPTION The Lube Sentry is a simple, compact unit that installs in the main lube line between the lube pump and master divider, and downstream from any meters or filters (recommended) between the pump and the divider. It consists of two separate units - an actuator and a 3-way pneumatic valve on the Pneumatic Lube Sentry, and an actuator and microswitch assembly on the Electric Lube Sentry - that are bolted together. It’s designed for use in series type systems with flow rates ranging from 4 to 400 pints of oil per day at pressures up to 6,000 psi (414 bar). The Pneumatic Lube Sentry can also be used to control pilot pressure to compatible air safety shutdown valves on gas compressor engines. FEATURES / BENEFITS The Pneumatic and Electric Lube Sentry also feature: • Absence of check valves to avoid trapping contamination from included solids in the lubricant. • B olted-together components simplifying maintenance. The microswitch assembly on the pneumatic valve can be removed without disturbing existing lines or shutting down the equipment being lubricated.

Manzel® Pneumatic / Electric Lube Sentry Valve OPERATION Starting the engine initiates lubricant flow from the lube pump serving the MH distribution system (until flow has been established, the electric or pneumatic circuit to the Lube Sentry must be bypassed). Lubricant passing through the hydraulic section of the valve (See Figure 1 or 2) from port (1) to port (2) moves to piston (3) in the direction of the arrow. The actuator rod (4) is attached to piston (3) and simultaneously moves in the same direction allowing the directional spool (5) in the air valve of the Pneumatic Lube Sentry (See...

Manzel® Pneumatic / Electric Lube Sentry Valve Typical Series Installation of Pneumatic Shutdown Circuit PRESSURE VALVE SAFETY CONTROL x-AIR SUPPLY Typical Electric Lube Sentry Installation ELECTRIC LUBE PNEUMATIC LUBE SENTRY VALVE LUBE INLET

DIMENSIONS Inches (mm) ELECTRIC LUBE SENTRY VALVE Ordering Information Pneumatic Lube Sentry, complete Pneumatic Valve Pressure Drop Electric Lube Sentry, complete Switch Assembly For more information on the Pneumatic or Electric Sentry Valve, consult Literature No. 45425 or your Trabon/Manzel Distributor. Operating Temperature -20ºF to 180ºF (-29ºC to 82ºC) Air Pressure 125 psi (9 bar) (Max Pneumatic Valve) Electrical Rating 5 amps @ 125/250 VAC A,B or C @ 28 VDC A- Inductive - 3 amp B- Resistive - 5 amp C- Max Inrush - 15 amp Look to GRACO, INC., for all of your Centralized Lubrication System...