Festo Festo ISV Non Return Valve, 4mm Tube Inlet, G 1/4 Female Outlet, 4mm Tube Outlet, -0.95 to 0bar Part: ISV-1/4

Festo non-return valve with mixed tube and thread connections.

SMC SMC AKH Non Return Valve, 4mm Tube Inlet, 4mm Tube Outlet, -100 kPa → 1 MPa Part: AKH04-00

SMC non-return valve with 4mm tube connections for pneumatic systems.

Festo Festo HGL Non Return Valve, 4mm Tube Inlet, 10bar Part: HGL-1/8-QS-4

Festo check valve for small 4mm pneumatic tubing up to 10 bar pressure.

Norgren Norgren C00GL Non Return Valve, 4mm Tube Inlet, 10.5mm Tube Outlet, 0.2 → 10bar Part: C00GL0400

Norgren check valve for small 4mm pneumatic lines up to 10 bar.

Festo Festo H Non Return Valve, 4mm Tube Inlet, 4mm Tube Outlet, 10bar Part: H-QS-4

Compact tube-connected check valve for pneumatic circuit protection.

Festo Festo ISV Non Return Valve, 4mm Tube Inlet, 4mm Tube Outlet, -0.95 to 0bar Part: ISV-M4

One-way pneumatic check valve for 4mm air tubing in industrial systems.

SMC SMC AKH Non Return Valve, 4mm Tube Inlet, M5 x 0.8 Male Outlet, -100 kPa → 1 MPa Part: AKH04A-M5

Compact SMC check valve for small pneumatic systems up to 1 megapascal pressure.

SMC SMC AKH Non Return Valve, 4mm Tube Inlet, R 1/8 Male Outlet, -100 kPa → 1 MPa Part: AKH04B-01S

SMC pneumatic one-way check valve prevents backflow in compressed air systems.