on the trailer and there is a spring biased bushing intermediate the fitting and shutoff cock for forming a seal therebetween application_number US 57546775 A description the particular combination gladhand and shutoff cock disclosed herein has application in the trucking field and particularly at the rear of a trailer which will pull a second trailer a gladhand body 10 has a first camming surface 12 and a second camming surface 14 both of which are conventional and are used to connect with similar surfaces of an opposing gladhand body the body 10 has an air chamber 16 with an outlet port 18 surrounded by a conventional gladhand seal member 20 at one end of the body 10 are mounting flanges 22 and 24 having mounting holes 26 and 28 which are used to attach the gladhand structure directly to a trailer there is a passage 30 connecting air outlet chamber 16 and an air inlet 32 which is formed in surface 34 defined by flanges 22 and 24 positioned within passage 30 is a fitting 36 and a bushing 38 positioned adjacent the bushing and between bushing 38 and chamber 16 is a shutoff cock or valve member 40 looking specifically at fitting 36 it is held in position within passage 30 by a ring 42 which holds a flange portion 44 of fitting 36 against a shoulder 46 an o ring seal 48 seals the exterior of the fitting with the interior of passage 30 fitting 36 has an outwardly extending tubular portion 50 which threadedly mounts an adjusting nut 52 positioned between the outward end 54 of tubular portion 50 and a corresponding surface 56 on nut 52 is a compression member 58 the.