The Hayward DAB Series Diaphragm Valves are available in sizes 1/2” to 6” in PVC and CPVC. End connections include True-union Socket or NPT Threaded and ANSI Flanged. All DAB Series feature a highly visible beacon indicator. Diaphragm material options include EPDM, Viton and PTFE. A PVDF vapor barrier available upon request for EPDM and PTFE diaphragms. The DAB Series are also available with pneumatic actuation.