purchase of item no . 1 ammonia globe valve screwd 1/2-inch and no . ( 2 ) teflon valve seat for ammonia valve size-1-inch ( make-freeze king ) purchase of item no . 1 ammonia globe valve screwd 1/2-inch and no . ( 2 ) teflon valve seat for ammonia valve size-1-inch ( make-freeze king ) note-bide are invited from oem/ authorized dealer/distributors . proof may be enclosed . he has to submit proof , ammonia globe valve screwd 1/2 ( make-freeze king industries ) ( rates may be offered inclusive gst , frieght etc inclusive all for dms ) , teflon valve seat for ammonia valve size-1 ( make-freeze king industries ) ( rates may be offered inclusive gst , frieght etc inclusive all for dms )