A device for testing air brakes in a vehicle having a glad hand which operably interconnects said air brakes to a source of compressed air, said device comprising:
- a) an elongated body having an inlet receiving end and an opposite outlet receiving end, a first longitudinal axis and an elongated cavity bored therein, said cavity extending between a floor and an opening formed through said body, and along a second longitudinal axis which lies essentially perpendicular to said first longitudinal axis, and said cavity further having first and second sections separated at a defined boundary;
- b) an elongated inlet having proximal and distal ends, and a first longitudinal passage extending therethrough along a third longitudinal axis which is essentially parallel to said first longitudinal axis, said proximal end of said inlet attached to said inlet receiving end of said body with said first longitudinal passage being positioned in fluid communication with said first section of said cavity;
- c) an elongated outlet having proximal and distal ends, and a second longitudinal passage extending therethrough along a fourth longitudinal axis which is essentially parallel to and in vertically spaced relation to said third longitudinal axis, said proximal end of said outlet being attached to said outlet receiving end of said body with said second longitudinal passage being positioned in fluid communication with said second section of said cavity;
- d) a valve assembly operable between open and closed positions including:
- i) first spring means extending axially along said second longitudinal axis and having a first end contacting said floor of said cavity, and an opposite second end;
- ii) first plunger means having first and second opposite ends and mounted in co-linear relation to, and for axial movement along said second longitudinal axis with said first end being positioned in biased relation to said second end of said first spring means, and further including sealing means movable into and out of engagement with said defined boundary separating said first and second sections of said cavity;
- iii) second spring means extending axially along said second longitudinal axis and having first and second opposite ends with said first end being positioned in biased relation to said sealing means;
- iv) second plunger means having opposite first and second ends and mounted in co-linear relation to and for axial movement along said second longitudinal axis, said first end of said second plunger means being positioned in biased relation to said second end of said second spring means, and said second end of said second plunger means being movable into and out of said cavity;
- v) lever means attached to said body for pivotal movement between first and second terminal positions, and having a surface contacting said second end of said second plunger means for effecting movement thereof into and out of said cavity in response to said lever means being moved from said first terminal position to said second terminal position, respectively;
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- vi) means for compressively retaining said valve assembly within said cavity.