Page 6 of Water Regulators and Blackflow Preventers & Meters by Duff Company

duff co regulators-backflowpreventers-meters watts backflow preventers watts nfl9 laboratory faucet vacuum breaker has 3/8 male inlet connections fits standard laboratory faucet pipe outlet or gooseneck outlet fits standard lab hose nipple or aspirator polished chrome finish max pressure 125 psi fig no price 8686 hose connectors watts 8 a hose connection vacuum breakers for back-siphonage protection for potable hoses attached to hose thread faucets prevent the flow of contaminated water back into the portable water supply furnished with with feature that allows sill cock to be drained this feature fig no price is non-removable 8678 without drainage feature watts 8 same as 8a except has no non-removable drainage feature watts n9 backflow preventer with atmospheric vent for exposed serviceable installations for in-line continuous pressure applications double check design providing dependable protection against both back-siphonage and backflow all brass construction size 1/4 3/8 watts 9d backflow preventer with intermediate fig no price atmospheric vent 8675 for use on hot or cold water and can be watts nf8 especially made used under continuous pressure for labofor wall and yard hydrants ratory/dairy equipment processing tanks permits manual draining for sterilizers and low hazard applications freezing conditions for boiler feed lines to prevent backflow when supply pressure falls below system pressure female union inlet and outlet fig no price connections may be installed either hori8683 zontally or vertically anti-siphon vacuum breakers size fig no price watts 288a anti-siphon 1/2 3/4 8711 8714 fig no 8700 8701 price watts 9bd backflow preventer for vending machine water supply lines prevent backflow of carbon dioxide gas and carbonated water into the water supply system stainless steel body and internal parts comply with fda food additive regulations 3/8 flare fig no 8708 vacuum breakers for hot or cold water for health hazard cross connections not subject to continuous pressure install 6 above highest downstream point of water designed to prevent back-siphonage of contaminated water into a potable water supply max temperature 160of at 125 lbs working pressure not a backflow preventer price series 288a repair kits watts 800m4qtanti-siphon pressure vacuum breaker for health hazard cross connections continuous pressure applications install 12 above highest downstream point of water this valve is designed to prevent backsiphonage of contaminated water into a potable water supply it is ideal for continuous systems or other continuous pressure piping systems working temp 33of to 140of max pressure 150 psi replaceable plastic seat bronze body and accessory construction easy inline maintenance serves as both antisiphon and check valve ball size fig price no valve test cocks for 1/2 8652 3/4 8653 trouble 1 8654 free operation 1 1/4 8655 1 1/2 2 8656 8657 size 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 weight 3/8 3/8 1/2 1 1/8 1 3/4 2 1/8 3 5/8 5 1/4 16 17 1/8 fig no 8670 8660 8661 8662 8663 8664 8665 8669 8667 8668 price size 1/4-3/8 1/2 3/4-1 fig no 76675 70901 70902 price size 1/2 3/4 1 fig no 48538 8717 8720 price watts 7 dual check backflow preventer for water supply service or individual outlets for non-health hazard continuous pressure applications residential system containment for installation immediately downstream from residential water meters horizontal or vertical installation with union end page 358 for additional information call 610-275-4453 or fax 610-279-6299 prices are a guide only please call for current prices.

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