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Throttle orifice




The 1442-TO-F and TO-M throttle orifices are designed to provide an accurate flow control. The conical needle or cylindrical plug valve has a micrometer type screw thread adjusting stem and allows excellent adjustment possibilities even at reduced flows. A TO-F and TO-M can be accurately adjusted with a screwdriver. A seal cap protects the adjustment preventing leakage.


Product Details

  • Valve body: brass
  • Valve seat: brass
  • Shutter: brass
  • Seal cap
  • Max. operating pressure: 3 bar
  • Max. operating temperature: -30°C to +180°C


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  • This field is for validation purposes and should be left unchanged.


We recommend Duomo Gas Detection products are serviced at least annually to ensure efficacy and extend sensor life. Our qualified team of engineers are available Nationwide.



  • Datasheet

    282.22 KB | pdf


Support & Service

If you require technical assistance or an annual service on this product please contact us and we will be happy to help. Our qualified team of engineers are available Nationwide.

Duomo (UK) Ltd

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