This 4 IN double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to back-siphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as non-health hazards such as on fire protection systems and from other contaminants found at the service line entrance. This compact modular design with a single access cover for easy maintenance is approved for horizontal and vertical flow up installation. It consists of a lightweight stainless steel body, outside stem and yoke resilient seated gate valves, captured spring check valves, and four test cocks. It comes furnished with a gallon per minute meter to detect underground leaks and unauthorized water use.

SilverBullet™ Double Check Detector Assembly With OSY, Series/Model: Series 3000SS, Nominal Size: 4 IN, Pressure Rating: 175 PSI, Flow Rate: 0 - 750 GPM, Temperature Rating: 33 - 110 DEG F, Stainless Steel Body Material, Industry Standards: ASSE 1048, AWWA C510-92, CSA B64.5, UL 1469, UL Classified, FM Approved, 40 IN Width, Lead Free: No, Other Physical Dimension: 14-1/2 IN Depth, 22-3/4 IN Inlet Center To Top Of Valve

• Compact construction allows for smaller vaults and enclosures
• No special tools are required for servicing
• Furnished with a gallon per minute meter
• Stainless steel lightweight housing with single top access
• Can be installed horizontal or vertical in the flow-up position
• Cam-check valve assembly provides low head loss
• Stainless steel construction provides long term corrosion-resistance and maximum strength

• Brochure/Catalog https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/0502000BBV_Broc.pdf
• Instruction/Installation Manual https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Ames_0690471_Instruction_Installation_Manual.pdf
• Specification Sheet https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Ames_0690493_Specification_Sheet.pdf