Original Metabo check/return valve 341164620 — direct replacement part for Metabo Basic compressors. This genuine Metabo valve sits between the pump and tank to prevent backflow and hold tank pressure after the motor shuts off; it’s a simple drop-in part that restores proper one-way airflow and reliable start/stop behaviour.

Fits the Metabo Basic 250-series compressors (Basic 250-24 W / Basic 250-24 W OF — item nos. 01532000 / 01533000 — and Basic 250-50 W / Basic 250-50 W OF — item nos. 01534000 / 01535000). The valve is sized to connect the pump outlet to the tank (nominal hose/port sizes ~12.7 mm → 9.5 mm), so it matches the standard tank/pump fittings used on these models and connects directly to the main container. This part is one of the common parts for power tools owners replace when the compressor won’t hold pressure.

If your Basic 250 compressor won’t keep pressure or you hear air escaping from the pump/filter area after shutdown, replacing the 341164620 check valve is a low-complexity repair that gets the unit sealing and restarting correctly.