November 8, 2019 – Emerson has released its ASCO Series 273 Pinch Valve for the life sciences market. The series expands Emerson’s pneumatic valve offering to single-use batch applications in bioreactor and fermentation tanks, tangential flow filters (TFF), chromatography skids and other drug discovery lab applications.
The Series 273 features a pinching mechanism that remains firmly in place to provide better tube retention and eliminates breakage or damage to the soft tubing. It also includes a safety guard to prevent exposure to moving parts, as well as a manual override feature that lets operators insert or remove tubing without actuating the valve during unplanned batch switching.
A pneumatically actuated pinch valve, the Series 273 makes no contact with process media, features a high lifecycle and provides a reliable pinching force over repeated use. Available in anodized aluminum and 316 stainless steel, the series is suitable for peroxide fumigation and includes a position indication option for valve on/off status feedback.
Series 273 Pneumatic Pinch Valve specifications include:
- 2-way normally open (NO) and normally closed (NC)
- Tube outer diameter (OD): 3/8"–1"
- Tube hardness: 55–80 Shore A
- Media pressure: up to 6BAR (90 PSIG)
- Air operating pressure: 4.8 to 10 BAR (70 to 145 PSIG)
- Valve position detection: open or closed
The Series 273 targets single-use batch applications in the pharmaceutical and biopharmaceutical markets, but is also suitable for food and beverage production. The pinch valve can be actuated using ASCO Series 501 or Aventics AV Series pneumatic valve manifolds and ASCO 580 CHARM electronics, which integrates into DeltaV distributed control system.
