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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 1 to 10 of 17 total

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  1. Ralston QTFT-CAPS Cap & Chain Fitting (Stainless Steel)

    Ralston QTFT-CAPS Cap & Chain Fitting (Stainless Steel)

    Suits Ralston Male Adaptors
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  2. Ralston QSQS-HOS-1M Calibration Hose (Stainless Steel)

    Ralston QSQS-HOS-1M Calibration Hose (Stainless Steel)

    • 1m Low Volume Hose
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  3. Ralston QSQS-HOS-1.5M Calibration Hose (Stainless Steel)

    Ralston QSQS-HOS-1.5M Calibration Hose (Stainless Steel)

    • 1.5m Low Volume Hose
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  4. Ralston QSQS-HOS-2M Calibration Hose (Stainless Steel)

    Ralston QSQS-HOS-2M Calibration Hose (Stainless Steel)

    • 2m Low Volume Hose
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  5. Ralston QSQS-HOS-5M Calibration Hose (Stainless Steel)

    Ralston QSQS-HOS-5M Calibration Hose (Stainless Steel)

    • 5m Low Volume Hose
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  6. Ralston QSQS-HOS-10M Calibration Hose (Stainless Steel)

    Ralston QSQS-HOS-10M Calibration Hose (Stainless Steel)

    • 10m Low Volume Hose
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  7. Ralston QSQS-HOS-15M Calibration Hose with Reel (Stainless Steel)

    Ralston QSQS-HOS-15M Calibration Hose with Reel (Stainless Steel)

    • 15m Low Volume Hose with Reel
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  8. Ralston QSQS-HOS-30M Calibration Hose with Reel (Stainless Steel)

    Ralston QSQS-HOS-30M Calibration Hose with Reel (Stainless Steel)

    • 30m Low Volume Hose with Reel
    • Rated to 475 Bar / 6900 PSI
    • Ralston Quick-Test Female Fittings (Stainless Steel)

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  9. Ralston QTHA-1MSA Quick-Test Female x 1/8" NPT Male (Stainless Steel)
  10. Ralston QTHA-2MSA Quick-Test Female x 1/4" NPT Male (Stainless Steel)

Items 1 to 10 of 17 total

per page
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