Flapper Non-Return Valves with Split Unions
| Size | 1 inch, 1½ inch, 2 inch, 3 inch |
|---|
Flapper-style valves are listed for reducing reverse flow in a pipe. Check the selected connections and supplied pack before ordering.
Flapper Non-Return Valves
Choose the connection
These valves are listed for restricting reverse flow in pond pipework. Split unions are listed with the 1 inch, 1½ inch, 2 inch and 3 inch options; check the union arrangement and contents of the selected pack.
Check before installation
Compare the selected connections with your pipework and follow the instructions for the actual valve. Nominal inch and metric fittings should not be assumed interchangeable. Plan access for inspection and maintenance.
Select a valve for the operating conditions of the system; do not assume it provides an absolute backflow barrier in every circumstance.



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