This is a servo-driven stop cock valve for directing flow paths. These valves can be positioned in 4 different ways. Input is where the fluid is drawn from the reagent reservoir (like a pressure compensation vessel, more detailshere) to the syringe. Output is where the fluid is pushed from the syringe pump towards the dispensers. Bypass is where the fluid paths are closed. Closed is where the syringe pump to the dispenser is closed but the flow path from the reagent reservoir to the dispenser is open. Each of these flow paths is used for operating liquid handling processes.
The system includes:
- Polypropylene 3-way stop cock valve
- 5 volt power supply
- Tubing and Luer-lock fittings
- Optional: Arduino based control electronics (command-line interface software can work with any computer)
- Optional: Raspberry Pi internet-of-thing (IoT) controller running web-based GUI and MQTT client