Aquamatic Noryl ValvesK521/2-inch to 2-1/2-inch "Y" pattern diaphragm valvesGlass-filled thermoplastic body and capFeatures & BenefitsLarge Seat opening and high lift-disc for higher flow rates at a lower pressure loss Separate flow and control chambers permit positive closing without springs; and only nominal cost for spring assist opening for low-pressure and self-draining applications Cost-effective solution both in initial cost,Website: , as well as lifetime maintenance expenses Separate diaphragm chambers protects the diaphragm from the flow stream, while allowing the valve to be serviced in-line Pre-formed, stress relieved diaphragm minimizes fatigue, maximizes valve responsiveness and diaphragm lifetime All internal parts in contact with media are made of composite materials Can be actuated with either air or water as control fluid Designed for water treatment applications including those requiring acids, caustic and harsh chemicals that would rapidly corrode medtal valvesFeatures & BenefitsLarge Seat opening and high lift-disc for higher flow rates at a lower pressure loss Separate flow and control chambers permit positive closing without springs; and only nominal cost for spring assist opening for low-pressure and self-draining applications Cost-effective solution both in initial cost, as well as lifetime maintenance expenses Separate diaphragm chambers protects the diaphragm from the flow stream, while allowing the valve to be serviced in-line Pre-formed, stress relieved diaphragm minimizes fatigue, maximizes valve responsiveness and diaphragm lifetime All internal parts in contact with media are made of composite materials Can be actuated with either air or water as control fluid Designed for water treatment applications including those requiring acids, caustic and harsh chemicals that would rapidly corrode medtal valvesAccessories & OptionsSeal and diaphragm materials available Spring assist (open or closed) Normally open or closed Position indicator K55 isolated bonnet valve