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One-way Valve / Check Valve With 2.1 mm Inner Diameter For BD-02, BD-03 and BD-05T Series Air Pumps With 1-2 kPa Opening Pressure
The BD-V0203.5 is a miniature one-way check valve for BD-02, BD-03 and BD-05T series air pumps. It stops air from flowing backwards in small pneumatic systems and helps protect the pump and the parts connected to it. With an opening pressure of 1-2 kPa, it lets forward airflow pass with little resistance.
The valve suits tubing of ID 2.1 mm and OD 3.5 mm. Its inline body measures 31 x dia. 15 mm and weighs approx. 1.1 g, so it fits easily into air sampling lines, pressure circuits and vacuum circuits. The polypropylene (PP) housing works with air across 0 to 120 C. Install it along the marked flow direction, because reverse installation blocks or heavily restricts airflow.
Key Features
- Reverse-Flow Prevention: One-way design keeps air from returning towards the pump.
- Low Opening Pressure: Opens at 1-2 kPa for smooth forward airflow.
- Pump Protection: Helps shield the pump and connected components from backflow.
- Wide Pressure Range: Rated for 3-5 kgf/cm2 (0.29-0.49 MPa).
- Wide Temperature Range: Operates at 0 to 120 C.
- Compact Inline Design: 31 x dia. 15 mm, suitable for tight tubing layouts.
- Ultra-Light Build: Approx. 1.1 g, adding almost no load to the line.
- Durable Housing: Polypropylene (PP) housing for air service.
- Tubing Size: ID 2.1 mm x OD 3.5 mm.
- Directional Installation: Fit along the indicated flow direction for correct operation.
Applications
- Air sampling systems
- Pressure circuits in miniature pneumatic setups
- Vacuum circuits using micro pumps
- Laboratory and analytical instruments
- Medical and healthcare devices using micro pumps
- Portable and battery-powered devices
- DIY, prototyping and R&D projects
