ASCO 273 and 373 Pneumatic Pinch Valves

ASCO 273 and 373 Pneumatic Pinch Valves
The ASCO Series 273 is a 2-way normally-closed or normally-open pressure-operated pinch valve designed to assure integrity of high-purity liquids in biotechnology, pharmaceuticals, diagnostics, single-use technology (SUT), and food and beverage markets. Typical applications include single-use bioreactors, Tangential Flow Filtration (TFF), and Chromatography skids.

The ASCO Series 373 is a 3-way normally-closed or normally-open pneumatic pinch valve also designed for single-use systems, including chromatography applications. Pneumatic pinch valves control the flow of the media by using pressurized air to operate the pinching mechanism and open or close the valve. The hermetic separation of valve control mechanism and the process media within the flexible, single-use tubing prevents contamination. A large range of body sizes are available to accommodate a wide variety of tubing sizes.

ASCO 273 and 373 Pneumatic Pinch Valves Features

  • Innovative Design
    • No contact with the process media
    • Easy insertion and removal of flexible tubing
  • Industry Leading Performance and Reliability
    • High tube pinching cycles
    • Better retention and protection of tubing during pinching cycles
  • Operator Safety
    • Easy to use built-in protective safety guard
    • Manual override allows for tube insertion removal without valve actuation
  • Unmatched Product Support
    • Local sales support and product specialists help find solutions to customer specific applications
    • Technical service and online support


ASCO 273 and 373 Pneumatic Pinch Valves Specifications

  • Valve Type - 2-Way Normally Open (NO) and Normally Closed (NC) | 3-Way Dual
  • Material of Construction - 2-Way: Anodized Aluminum and Stainless Steel | 3-Way: Anodized Aluminum
  • Tube Range (OD) - 2-Way: 1/4", 3/8", 1/2", 3/4", 1" | 3-Way: 1/2"
  • Tube Material - Silicone, cflex374, 082 and Tygon
  • Tube Hardness - 55 - 80 Shore A (Gamma Radiated)
  • Tube Media Pressure - Up to 90 PSI (up to 6 BAR), depending on size and tubing material
  • Air Operating / Piloting Pressure - 70 PSI – 145 PSI (4.8 BAR – 10 BAR)
  • Ambient Temperature - 32°F to 104°F (0°C to + 40°C)
  • T-Groove for Switch Contact - Feedback on valve position status (Ex. ASCO Series 494)
  • Media - Inert Gases or Liquids


ASCO 273 and 373 Pneumatic Pinch Valves Applications

  • Single Use Bioreactors
  • Tangential Flow Filtration (TFF) Skids
  • Chromatography Skids

For the pneumatic operation of the 273 and 373 series valves, Solenoid Valves are necessary as pilot valves. If you need to operate multiple pinch valves for your application, the Aventics 500 series valve manifolds provide an ideal solution. Here is the catalog:
Download ASCO 273 and 373 Pneumatic Pinch Valves Brochure

If you are controlling a single 273 or 373 pinch valve at a time, a single 3/2 normally closed (NC) or normally open (NO) valve will be adequate. In this case, you can consider using the 8356 valve series from ASCO. Here is the catalog:
Download ASCO™ Series 356 Solenoid Valves Brochure



Aventics ASCO™ Numatics 500 and 2000 Series Directional Control Valves

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