Features: DR Brass Dual Check Valve Female x Female 20mm 25mm Overview Double Lin Dual Check Valves: Dual Check Valve prevents backflow by either backpressure or back-siphonage from a cross-connection between potable water lines and substances that are objectionable, but not health hazards. Lead-free bronze C89836 body, Lead-free brass C27450 tailpiece, Brass C36000 union nut, Acetal Check Modules, Stainless Steel Springs, EPDM Seat discs. Complies with NZS 2845
