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Ralston Instruments - Calibration Hoses & Fittings

Make a bubble-tight connection, over and over again, without a wrench.

Ralston Quick-test hose and adapters seal via an O-ring and probe. The probe slides into the O-ring and provides the seal while the threads keep the probe in place. This simple and reliable method allows for leak-free connections for pressure calibration, gas sampling, pressure reading and testing.

The specialist tube fittings adapt the Quick Test system to any Swagelok, Parker, Hoke, SSP, Tylok or equivalent tube fitting. They feature a unique design that seals on an o-ring to prevent damage to a tube fitting, allowing you to make and remake the connection hundreds of times without over-tightening a tube fitting.

If you can't find a suitable item or if you need some help or advice, please don't hesitate to contact us. With over 25,000 products in our catalogue we'll be able to find a solution that's right for you.

Items 51 to 60 of 75 total

per page
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  1. Ralston QTHA-2TB0 Quick-Test Male x 1/4" Tube Female (Brass)

    Ralston QTHA-2TB0 Quick-Test Male x 1/4" Tube Female (Brass)

    Suits Ralston Calibration Hoses

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  2. Ralston QTHA-3TB0 Quick-Test Male x 3/8" Tube Female (Brass)

    Ralston QTHA-3TB0 Quick-Test Male x 3/8" Tube Female (Brass)

    Suits Ralston Calibration Hoses

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  3. Ralston QTHA-4TB0 Quick-Test Male x 1/2" Tube Female (Brass)

    Ralston QTHA-4TB0 Quick-Test Male x 1/2" Tube Female (Brass)

    Suits Ralston Calibration Hoses

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  4. Ralston QTHA-2TS0 Quick-Test Male x 1/4" Tube Female (Stainless Steel)

    Ralston QTHA-2TS0 Quick-Test Male x 1/4" Tube Female (Stainless Steel)

    Suits Ralston Calibration Hoses

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  5. Ralston QTHA-3TS0 Quick-Test Male x 3/8" Tube Female (Stainless Steel)

    Ralston QTHA-3TS0 Quick-Test Male x 3/8" Tube Female (Stainless Steel)

    Suits Ralston Calibration Hoses

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  6. Ralston QTHA-4TS0 Quick-Test Male x 1/2" Tube Female (Stainless Steel)

    Ralston QTHA-4TS0 Quick-Test Male x 1/2" Tube Female (Stainless Steel)

    Suits Ralston Calibration Hoses

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  7. Ralston QTHA-HNS0 Quick-Test Male x 1/4"-28 UNF Male (Stainless Steel)

    Ralston QTHA-HNS0 Quick-Test Male x 1/4"-28 UNF Male (Stainless Steel)

    Suits Ralston Calibration Hoses

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  8. Ralston QTHA-HHSU Quick-Test Male Union (Stainless Steel)
  9. Ralston QTHA-HSTS Quick-Test Male x Quick-Test Male x Quick-Test Male (Stainless Steel)

    Ralston QTHA-HSTS Quick-Test Male x Quick-Test Male x Quick-Test Male (Stainless Steel)

    Suits Ralston Calibration Hoses and Adaptors

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  10. Ralston QTHA-HHCB Quick-Test Male x Quick-Test Male x Quick-Test Female (Brass)

    Ralston QTHA-HHCB Quick-Test Male x Quick-Test Male x Quick-Test Female (Brass)

    Suits Ralston Calibration Hoses and Adaptors

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Items 51 to 60 of 75 total

per page
Page:
  1. 4
  2. 5
  3. 6
  4. 7
  5. 8

Set Descending Direction