This thermoplastic multipurpose valve will be available in a new 4-in. size, to be released November 1st. This corrosion-resistant valve provides relief, bypass, back-pressure, and anti-siphon functions in one unit. Its design features a Teflon diaphragm, a Fail Dry advance warning vent, and no wetted metals or elastomers. It is a versatile valve for 4-in. piping and is surprisingly compact, with a non-rising adjusting bolt.
