909 Large

Reduced Pressure Valve Assembly Backflow Preventers, Cast Iron, Large Diameter 2 1/2 - 10 Inch Sizes

Series 909 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. It consists of a cast iron body construction, bronze ball valve shutoffs, and bronze test cocks Large diameter 2 1/2 to 10 inch sizes.

The coating on this backflow assembly uses ArmorTek™ technology to resist corrosion due to microbial induced corrosion (MIC) or exposed metal substrate.

Features

Health hazard protection level
Exclusive relief valve design provides maximum capacity during emergency conditions
Industrial strength sensing hose on larger size models
Can be used in a variety of installations, including containment at the service line entrance
No special tools required for servicing
The valve body shall utilize a coating system with built in electrochemical corrosion inhibitor and microbial inhibitor
Utilizes advanced ArmorTek coating technology to resist corrosion of internals

Literature

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Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) 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