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850 Large

Discontinued

MasterSeries In-Line Design Double Check Valve Assembly Backflow Preventers - Large Diameter

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Select options below to identify the UPC, Order Code, and Repair Kit for a specific 850 Large

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