91
×
![]()
Cast Iron or Cast Aluminum Bronze Compact Wafer Silent Check Valves
Series 91 Cast Iron or Cast Aluminum Bronze Compact Wafer Silent Check Valves are designed for liquids and gases where flow reversal can cause surge and water hammer.
Features
- Compact, lightweight wafer design saves space
- Disc begins to open at 0.5 psi (34.5 kPa), and opens 1/3 inch per inch of line size for enhanced flow
- Disc is fully guided at top and bottom to ensure alignment and sealing at any installation angle
- Sizes: 2 to 6 in. (50 to 150mm)
Literature
Select a Model
Select options below to identify the UPC, Order Code, and Repair Kit for a specific 91
No results found
Share this Product
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 |