850 Large
Discontinued
MasterSeries In-Line Design Double Check Valve Assembly Backflow Preventers - Large Diameter
MasterSeries 850 In-Line design double check valve assembly backflow preventers are designed to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. They feature an epoxy coated ductile iron body and NRS resilient wedge gate valves. Optional OSY RW gate valves are available. Maximum working pressure is 175 psi (12.1 bar).
Literature
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 |