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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 11 to 20 of 76 total

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  1. Ralston QTHA-2MB0 - 5000 PSI / 345 Bar - Brass

    Ralston QTHA-2MB0 Quick-Test Male x 1/4" NPT Male Adapter

    • Ralston Quick-Test Male x 1/4" NPT Male Connections
    • Suits Ralston Quick-Test Hoses & Female Fittings
    • Rated to 345 Bar / 5000 PSI
    • Brass Construction

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  2. Ralston QTHA-2MB1 Quick-Test Male x 1/4" NPT Male (Brass, Check Valve)

    Ralston QTHA-2MB1 Quick-Test Male x 1/4" NPT Male (Brass, Check Valve)

    Suits Ralston Calibration Hoses

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  3. Ralston QTHA-2MS0 Quick-Test Male x 1/4" NPT Male (Stainless Steel)

    Ralston QTHA-2MS0 Quick-Test Male x 1/4" NPT Male (Stainless Steel)

    Suits Ralston Calibration Hoses

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  4. Ralston QTHA-2MS1 Quick-Test Male x 1/4" NPT Male (Stainless Steel, Check Valve)
  5. Ralston QTHA-3MB0 Quick-Test Male x 3/8" NPT Male (Brass)

    Ralston QTHA-3MB0 Quick-Test Male x 3/8" NPT Male (Brass)

    Suits Ralston Calibration Hoses

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  6. Ralston QTHA-3MB1 Quick-Test Male x 3/8" NPT Male (Brass, Check Valve)

    Ralston QTHA-3MB1 Quick-Test Male x 3/8" NPT Male (Brass, Check Valve)

    Suits Ralston Calibration Hoses

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  7. Ralston QTHA-3MS0 Quick-Test Male x 3/8" NPT Male (Stainless Steel)

    Ralston QTHA-3MS0 Quick-Test Male x 3/8" NPT Male (Stainless Steel)

    Suits Ralston Calibration Hoses

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  8. Ralston QTHA-3MS1 Quick-Test Male x 3/8" NPT Male (Stainless Steel, Check Valve)
  9. Ralston QTHA-4MB0 Quick-Test Male x 1/2" NPT Male (Brass)

    Ralston QTHA-4MB0 Quick-Test Male x 1/2" NPT Male (Brass)

    Suits Ralston Calibration Hoses

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  10. Ralston QTHA-4MB1 Quick-Test Male x 1/2" NPT Male (Brass, Check Valve)

    Ralston QTHA-4MB1 Quick-Test Male x 1/2" NPT Male (Brass, Check Valve)

    Suits Ralston Calibration Hoses

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Items 11 to 20 of 76 total

per page
Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Set Descending Direction