The discharge end of the teat cup may be fitted with a shut off valve which can be actuated to prevent ingress of treatment and cleansing {HEAD ~ fluids} into {TAIL ~ the milk tubes} during the treatment and cleansing cycle 
into
The discharge end of the teat cup may be fitted with a shut off valve which can be actuated to prevent ingress of treatment and cleansing { HEAD ~ fluids } into { TAIL ~ the milk tubes } during the treatment and cleansing cycle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH