The non-return or check valves allow the fluid to flow in only one direction of the installation, allowing to work without fluid in the other direction or to avoid situations of undesired emptying of the line.
Available in sizes from 3/8"" to 4"".
Working pressure: PN 16: 3/8""-2"" / PN 10: 2½""-4"".
Connections for female thread (also available with glue connections).