the 2-1/2'''' - 12'''' backflow preventer shall be an Apollo model DCLF4A lead free
• double check valve. the assembly shall be manufactured in america and carry a 5-year Apollo factory warranty. the TriForce center stem guided check valves shall feature reversible silicone rubber seat discs. the check valves shall be held in place by stainless steel snap-in retainers (2-1/2'''' - 6'''') or stainless steel studs and nuts (8'''' - 12''''). access to the check valves shall be by an Apollo quick-connect stainless steel coupling (2-1/2'''' - 6'''') or grooved couplings (8'''' - 12''''). the bodies shall be stainless steel in 2-1/2'''' - 8'''' sizes and FDA epoxy coated ductile iron in 10'''' and 12'''' sizes. the lead free
• Apollo ball valve test cocks shall have stainless steel handles. the assembly shall prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are non-health hazards. the pressure drop across the assembly shall be documented by ASSE or USC FCCC and HR approval curves.domestic stainless steel body: 2-1/2''''-8''''FDA epoxy coated ductile iron body: 10'''' and 12''''easy maintenance: no special tools requiredsnap-in check retainers: 2-1/2''''-6''''bolted-in checks: 8''''-12''''low pressure loss as documented by an independent approval laboratorycenter stem guided triforce check valvesapproved for horizontal and vertical up flowchloramine-resistant elastomerslead free standardUS patent Nos. 6,443,184; 7,025,085; 7,533,6995 year warranty