Stem, w/O-Rings, to fit A-dec® Air/Water Shut-Off Valve (A-dec® #30.0731.00) Kit Includes: stem, spring, diaphragm A-dec® is a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products.