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A flow controller for preventing damage to a rotating machine by automatically redirecting the flow of lubricating oil in and out of a shaft driven pump in the event the machine goes into reverse rotation. The controller contains sealing elements that are moved under the influence of oil moving thro

A flow controller for preventing damage to a rotating machine by automatically redirecting the flow of lubricating oil in and out of a shaft driven pump in the event the machine goes into reverse rotation. The controller contains sealing elements that are moved under the influence of oil moving through the flow controller.

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A flow control apparatus for protecting a rotating machine that is coupled to a primary pump from experiencing lubrication starvation in the event the machine and pump go into reverse rotation, the apparatus including: a housing having an inlet channel connected to the discharge side of the primary

A flow control apparatus for protecting a rotating machine that is coupled to a primary pump from experiencing lubrication starvation in the event the machine and pump go into reverse rotation, the apparatus including: a housing having an inlet channel connected to the discharge side of the primary pump and an outlet channel being spaced apart from said inlet channel, said outlet channel being connected to the suction side of the primary pump, said housing further including a first shuttle passage connecting said spaced apart channels and a second discharge passage spaced apart from said shuttle passage also connecting said spaced apart channels, a first flow means for connecting said shuttle passage with an oil reservoir, a second flow means for connecting said discharge passage to the rotating machine for providing lubricating oil to said machine, a shuttle having axially spaced sealing elements, said shuttle being slidably mounted upon a first slide rod that is centrally positioned in said shuttle passage, said shuttle being arranged to slide along said first slide rod in response to pressure being exerted thereon by oil flowing through said housing to selectively place said first flow means in fluid flow communication with one of said channels, and a pair of free floating sealing disks that are slidably mounted upon a second slide rod that is centrally mounted in said discharge passage, said disks being arranged to slide along said second slide rod in response to pressure being exerted thereon by oil flowing through said housing to selectively place said second flow means in fluid flow communication with one of said channels.