CPC A01J 7/04 (2013.01) [A01J 5/047 (2013.01); A01J 7/00 (2013.01); A01J 7/02 (2013.01); A01J 7/022 (2013.01); A01J 7/025 (2013.01); Y10T 137/2546 (2015.04); Y10T 137/4245 (2015.04); Y10T 137/4252 (2015.04); Y10T 137/8593 (2015.04); Y10T 137/87684 (2015.04)] | 4 Claims |
1. An automated teat dip application system comprising:
a main control;
a water supply in communication with the main control;
a dip supply in communication with the main control;
a mixer in communication with the dip supply and the water supply; and
a safety valve in fluid communication with the mixer and a downstream portion of a milker unit, and a dip valve piston for movement between a milking position and a backflush position, and the safety valve comprises:
a first valve, a second valve, and a third valve comprising:
a common valve seat element including:
a cylindrical cup having a closed end and an open end; and the closed end defines a first valve seat and a second valve seat, and the cylindrical cup defines a vent; and
the dip valve piston is at least partially disposed in the cylindrical cup and includes a first valve head disposed to engage the first valve seat when the first valve is closed, a second valve head disposed to engage the second valve seat when the second valve is closed, and a third valve element disposed to engage the third valve seat when the third valve is closed to the vent.
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