BACKFLOW PREVENTERS - Conbraco Industries - #39

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www.apollovalves.com Spill Resistant Vacuum Breaker Backflow Preventers 39 4W - 5 0 X - 0 2 SIZE 1 – 1/4" 2 – 3/8" 3 – 1/2" Dimensions - in.(mm) – Weights - lbs.(kg) Model No. SVB4W14 SVB4W38 SVB4W12 Ordering No. 4W-501-02 4W-502-02 4W-503-02 Size 1/4" (6) 3/8" (10) 1/2" (15) Test Cock 1/4" Flare 1/4" Flare 1/4" Flare Net Wt. 1.16 (0.5) 1.16 (0.5) 1.16 (0.5) Shipping Wt. 1.26 (0.6) 1.26 (0.6) 1.26 (0.6) SVB-4W Series SPILL RESISTANT VACUUM BREAKERS The Apollo Series SVB-4W Spill Resistant Vacuum Breaker is designed to prevent contamination of the potable water supply due to back-siphonage. The SVB is ideally suited for continuous pressure, indoor applications where water spillage is undesirable. The device has a straight through flow path for minimal head loss. All components are easily accessible for easy repair and maintenance. All components are made of corrosion resistant materials for years of reliable service. Should be installed 6” above all downstream piping. OPERATION During normal flow conditions, the check valve remains open and the atmospheric vent seals in the bonnet assembly. As the line pressure falls to 1 psi, the spring loaded atmospheric vent opens and the check valve closes, breaking the vacuum and thereby preventing backsiphonage. Water is not allowed to spill at any time during operation. FEATURES • Corrosion Resistant • In-Line Flow • Integral Shut-Off Valves w/Stainless Steel Handles and Nuts • Designed For Easy Maintenance • Low Head Loss • Economical • Maximum Working Pressure 150 PSIG • Operating Temperature Range 33°F-180°F • ASSE 1056 • 5 year, domestic warranty MATERIALS Body PPO Springs Stainless Steel Seat Discs Silicone Rubber Valve Canopy ABS Plastic Float Acetal Fasteners Stainless Steel Ball Valve Handles Stainless Steel Contact local water authorities for installation/service requirements. Sizes 1/4", 3/8", 1/2" ORDERING CODE - SEE PAGE 65 FOR FLOW CURVES