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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 20 total

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  1. Ralston / Transtek Quick-Test 1m Hose, NPT & Tube Fittings Kit (Brass)

    Ralston / Transtek Quick-Test 1m Hose, NPT & Tube Fittings Kit (Brass)

    • 1/8" & 1/4" Male & Female NPT Adapters
    • 1/4" Tube Adapters
    • 1m Low Volume Quick-Test Hoses
    • Adapters Rated to 5000 PSI / 345 Bar
    • Hoses Rated to 6900 PSI / 475 Bar

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

    Ralston QTHA-1MB0 Quick-Test Male x 1/8" NPT Male Adapter

    • Ralston Quick-Test Male x 1/8" NPT Male Connections
    • Suits Ralston Quick-Test Hoses & Female Fittings
    • Rated to 345 Bar / 5000 PSI
    • Brass Construction

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  3. Ralston QTHA-1MB1 - 3000 PSI / 207 Bar - Check Valve - Brass

    Ralston QTHA-1MB1 Quick-Test Male x 1/8" NPT Male Adapter with Check Valve

    • Ralston Quick-Test Male x 1/8" NPT Male Connections
    • Suits Ralston Quick-Test Hoses & Female Fittings
    • Integrated Check Valve
    • Rated to 207 Bar / 3000 PSI
    • Brass Construction

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  4. Ralston QTHA-1MS0 Quick-Test Male x 1/8" NPT Male Adapter

    Ralston QTHA-1MS0 Quick-Test Male x 1/8" NPT Male Adapter

    • Ralston Quick-Test Male x 1/8" NPT Male Connections
    • Suits Ralston Quick-Test Hoses & Female Fittings
    • Rated to 345 Bar / 5000 PSI
    • Stainless Steel Construction

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

    Ralston QTHA-1MB0-RS Quick-Test Male x 1/8" BSPP Male (Brass)

    Suits Ralston Calibration Hoses

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  8. Ralston QTHA-1MB0-RT Quick-Test Male x 1/8" BSPT Male (Brass)

    Ralston QTHA-1MB0-RT Quick-Test Male x 1/8" BSPT Male (Brass)

    Suits Ralston Calibration Hoses

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  9. Ralston QTHA-1MB1-RT Quick-Test Male x 1/8" BSPT Male (Brass, Check Valve)
  10. Ralston QTHA-1FB0 Quick-Test Male x 1/8" NPT Female (Brass)

    Ralston QTHA-1FB0 Quick-Test Male x 1/8" NPT Female (Brass)

    Suits Ralston Calibration Hoses

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Items 1 to 10 of 20 total

per page
Page:
  1. 1
  2. 2

Set Descending Direction