Allen I have to disagree with you up to a point. I don't know if all the 1/2 ton trucks came with a shutoff valve or not. However reading a great number of posts on the subject, It is my understanding most of them did come with a shutoff valve. It is a shame that kaliforniaman broke the original valve. They are hard to find, and the repops are not quite the same. If I don't have my info 100% someone that can speak to the valve issue will chime in. Jim.
