Aladco 501201 Pneumatic Non-Return Check Valve 1/8" NPTF

Compact, high‑reliability pneumatic non‑return check valve designed to prevent reverse airflow and securely trap air in downstream devices. Built with a rugged anodized aluminum body and engineered for safety‑critical pneumatic applications. Technical Specifications: Model: 501201 Brand: Aladco Product Type: Pneumatic non‑return (check) valve Port Size: 1/8" NPTF Port Type: NPT female (Clean‑Check series) Body Material: Anodized aluminum, blue finish Seals: Buna‑N (standard for Clean‑Check series) Function: Prevents reverse flow; traps air in devices to maintain pneumatic holding force Operating Pressure Range: 15–120 PSI (Clean‑Check series) Temperature Range: Buna seals −30 °F to 150 °F (standard) Override: Extended manual override button (visible on device) Connections Installed: Four push‑to‑connect pneumatic fittings (visible) Mounting: Two mounting holes on body (visible) Application: Safety retention of pressure, pneumatic locking, actuator position holding Warning (text on label): “THIS VALVE TRAPS AIR IN DEVICES; ACCIDENTAL RELEASE OF TRAPPED AIR OR FAILURE TO RELIEVE TRAPPED AIR MAY BE HAZARDOUS.” Series Type: Clean‑Check valve (per manufacturer classification) Country of Manufacture: USA Weight (packaged listing value): 2.00 units Please review pictures carefully and let us know if you have any questions!