Valve block for a backflushing and teat dip applicator system
A system for cleaning a dairy animal milker unit and applying dip to a dairy animal, the system includes a main control, an air supply, a water supply, a backflush fluid supply, a dip supply, a stall control for receiving the air, water, backflush fluid and dip supplies, and a safety valve that is adjacent to a downstream portion of the milker unit to control backflush and dip fluids being fed to the milker unit.
1. A valve block for a backflushing and teat dip applicator system, the valve block comprising:
a housing defining a chamber;
a plurality of inlets into the chamber;
a plurality of valves, and each valve is movable to open or close a corresponding inlet to the chamber;
a common outlet from the chamber; and
a spool disposed in the chamber for movement between a milking position and a backflushing position.
2. The valve block of claim 1 , wherein the spool comprises:
an upper valve head and a lower valve head.
3. The valve block of claim 1 , and further comprising:
a spring biasing the spool toward the milking position.
4. The valve block of claim 1 , and further comprising a drain in the housing chamber, to vent the housing chamber when the spool is in the milking position.