Our valves are durable.
Duct Non Return Valve 100mm 4"/150mm Round Rigid Connector with Shutter Damper
Duct Non Return Valve 100mm Round Rigid Pipe Connector with Shutter Damper
Duct Non Return Valve 100mm / 4in Round Rigid Pipe Connector with Shutter Damper
Duct Non Return Valve 150mm / 6in Round Rigid Pipe Connector with Shutter Damper
