LF909 Large
Lead Free* Reduced Pressure Valve Assembly Backflow Preventers - Large Diameter 2-1/2 - 10 Inch Sizes
Series LF909 Large prevents the reverse flow of liquids in a plumbing system due to backpressure or backsiphonage where there is a potential health hazard. An exclusive relief valve design provides substantially improved relief valve discharge performance during emergency conditions of combined backsiphonage and backpressure. The seats are replaceable for economical repair. These large diameter backflow preventers are available in 2-1/2 to 10 inch sizes.
Series LF909 is also available with SentryPlus™ Alert technology to detect catastrophic relief valve discharge that could potentially cause flooding, and issue a multi-channel alert (call, email, text) to selected users so they can take action to avoid potentially costly flooding.
Features
- Health hazard protection level
- Exclusive relief valve design provides maximum capacity during emergency conditions
- Industrial strength sensing hose on larger size models
- Available with SentryPlus Alert™ Technology for flood detection alert capabilities
- Can be used in a variety of installations, including containment at the service line entrance
- No special tools required for servicing
Literature
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Literature
- Backflow Prevention Products Guide
- Brochure - Automated Flood Protection
- Installation Instructions - 909 Large, LF909 Large, 909RPDA, LF909RPDA
- Installation Instructions - SentryPlus Alert Technology (June 2020 - Present)
- Price List - Backflow Prevention Repair Kits & Service Parts
- Price List - Watts Flood Protection and Backflow Systems
- Specification Sheet - LF909 (2-1/2 to 10 IN)
- Specification Sheet - NYC Backflow Specialty Items
- Specification Sheet - PVS-7000
- Specification Sheet - SentryPlus Alert Upgrade Kit
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
ASSE | CSA | FM Approvals | NSF |
UL | ULC | USC | WQA |