without loss of fuel or ingestion of water into an associate fuel system is responsive to a flotation device weighted to float at the water fuel interface the flotation device is connected by a lever to turn a rotor in a pressurized chamber thereby selectively connecting pressure or exhaust to respective actuation control ports for a drain valve and fuel valve application_number US 92570786 A description the present invention is shown schematically in fig1 in connection with a filter separator tank 10 containing fuel 12 water 14 and air 16 the subject separator control 18 is mounted in an aperture 20 in the tank in the general area of the water fuel interface the subject separator control 18 has a housing 22 provided with an annular flange 24 having an array of mounting holes 26 for receiving mounting means 27 therein sealing between the control 18 and tank 18 is provided by o ring 28 the housing 22 defines an l shaped cavity 20 having a first end 32 opening in the annular flange 24 and a second end 34 opening normal to the surface of the flange 24 ball float 36 has an internally threaded adapter 38 which receives therein one end of a lever arm 40 the other end of the lever arm being secured to a rotor 42 body 44 has an outer profile 46 adapted to be received in the opening 34 and an inner annular profile 48 adapted to receive a cover 50 therein the body 44 and cover 50 define therebetween a cavity 52 with oppositely directed axial bores 54 56 the rotor 42 has a body portion 58 with oppositely directed integral axial shafts 60 62 sealing is provided between the rotor 42 the body.