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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.

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  1. Ralston QTHA-KIT4 Universal Quick-Test Hose & Adapter Kit (Brass)

    Ralston QTHA-KIT4 Universal Quick-Test Hose & Adapter Kit (Brass)

    Comprehensive Quick-Test to NPT, Tube & DP Transmitter Adapters Kit (Brass)

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  2. Ralston QTHA-KIT4-SS Universal Quick-Test Hose & Adapter Kit (Stainless Steel)

    Ralston QTHA-KIT4-SS Universal Quick-Test Hose & Adapter Kit (Stainless Steel)

    Comprehensive Quick-Test to NPT, Tube & DP Transmitter Adapters Kit (Stainless Steel)

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  3. Ralston / Transtek Quick-Test 2m Hose, NPT & Tube Fittings Kit (Brass)

    Ralston / Transtek Quick-Test 2m Hose, NPT & Tube Fittings Kit (Brass)

    • 1/8" & 1/4" Male & Female NPT Adapters
    • 1/4" Tube Adapters
    • 2m Low Volume Quick-Test Hoses
    • Adapters Rated to 5000 PSI / 345 Bar
    • Hoses Rated to 6900 PSI / 475 Bar

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  4. Ralston QTHA-1MS0-QD Quick Test Male x 1/8" NPT Male Quick-Connect (Stainless Steel)

Items 11 to 14 of 14 total

per page
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  2. 2

Set Descending Direction