Available in DN15 with pressure rating of PN6, Type 604/605 Valves offer fail safe to close, fail safe to open, and double acting operating modes. Units come in PVC-U, CPVC, PP-H, and PVDF with diaphragm made of EPDM, FPM, PTFE/EPDM, or PTFE/FPM, enabling use with aggressive media as well as neutral fluids. Type 604 can be mounted into system with true union connection matching all standard GF unions and inserts and solvent cementing. Type 605 comes with sealed or resealable nozzle.