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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.

9 Item(s)

per page

Set Descending Direction
  1. 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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  2. Ralston QTHA-1MS1 Quick-Test Male x 1/8" NPT Male (Stainless Steel, Check Valve)
  3. Ralston QTHA-2MS1 Quick-Test Male x 1/4" NPT Male (Stainless Steel, Check Valve)
  4. Ralston QTHA-1MSA Quick-Test Female x 1/8" NPT Male (Stainless Steel)
  5. Ralston QTHA-1FS0 Quick-Test Male x 1/8" NPT Female (Stainless Steel)

    Ralston QTHA-1FS0 Quick-Test Male x 1/8" NPT Female (Stainless Steel)

    Suits Ralston Calibration Hoses

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  6. Ralston QTHA-1FS1 Quick-Test Male x 1/8" NPT Female (Stainless Steel, Check Valve)
  7. Ralston QTHA-1FS0-QD Quick Test Male x 1/8" NPT Female Quick-Connect (Stainless Steel)
  8. Ralston QTHA-1FSA-QD Quick-Test Female x 1/8" NPT Female Quick-Connect (Stainless Steel)
  9. Ralston QTHA-1MS0-QD Quick Test Male x 1/8" NPT Male Quick-Connect (Stainless Steel)

9 Item(s)

per page

Set Descending Direction