Skip to Main Content

850 Small

In-Line Design Double Check Valve Assemblies - Small Diameter

Select a Model

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

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