Isolating Cock Isolating cock function to close the channel at wagon/hindmost vehicle.Isolating cock have 2 type :Isolating cock LH3-1" type L is used for passenger car (KE-P-12")Isolating cock LH3-1" type R is used for passenger car (KE-P-12")Isolating cock LH3-1.1/4" type L is used for Goods wagon (KE-P-12")Isolating cock LH3-1.1/4" type R is used for Goods Wagon (KE-P-12") Certification