M300
Stainless Steel Double Check Detector Assembly Backflow Preventers with Tri-Link Check Valves for High Flow Fire Systems
Series M300, M300N double check valve assembly backflow preventers are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70% lighter than traditional designs.
Series M300, M300N features the certified lowest pressure loss and is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. This Series is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. Maximum working pressure is 175 psi (12.06 bar).
Features
- Can be installed under continuous pressure service to protect against backpressure and backsiphonage
- Extremely compact design is significantly lighter than traditional designs
- Patented tri-link check provides low pressure loss
- Entire valve body and closure sleeve manufactured from 304 stainless steel
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 |