Ralston Fittings and Adapters

Ralston Fittings and Adapters
Ralston Instruments Fittings and AdaptersRalston Instruments Fittings and Adapters

Precision Fittings and Adapters for Reliable Pressure Testing and Calibration

Ralston Instruments Fittings and Adapters, available through Transcat, offer industry-leading precision and durability for professionals working with pressure systems. Designed to ensure leak-free connections in even the most demanding applications, these fittings and adapters are essential tools for technicians performing pressure calibration, testing, and fluid transfer. With a wide range of configurations and materials, Ralston’s fittings and adapters provide seamless compatibility with gas, hydraulic, and pneumatic systems across various industries.

Leak-Free Performance

Ralston’s fittings and adapters are engineered for tight, secure, and reliable connections, eliminating the risk of leaks that can compromise accuracy during pressure testing or calibration. Each component undergoes rigorous testing to ensure consistent performance in critical applications.

Durable, Corrosion-Resistant Materials

Constructed from high-grade stainless steel, brass, and other corrosion-resistant materials, Ralston fittings and adapters are built for longevity, even in harsh environments. These materials ensure resistance to wear, corrosion, and impact, extending the life of your equipment.

High-Pressure Tolerance

Ralston fittings and adapters are designed to handle both low-pressure and high-pressure environments, making them suitable for everything from routine calibration to high-stakes testing in gas and fluid systems. They are built to withstand pressure levels up to 5000 PSI and beyond, ensuring they meet the toughest requirements.

Wide Range of Configurations

Available in a broad spectrum of sizes, thread types, and connection styles—including NPT, BSPP, and Quick-Test™—Ralston fittings and adapters are compatible with virtually any system. This versatility makes them ideal for a variety of industries, including energy, aerospace, and industrial manufacturing.

 

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  • Ralston Instruments QTHA-2MB1 1/4" male NPT x male QT, with check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB1 1/4" male NPT x male QT, with check-valve, Brass Adapter
    Order # QTHA-2MB1 Mfg # QTHA-2MB1
    $19.87
  • Ralston XTHA-FRS0 DP Transmitter Adapter, 5/16" - 24 UNF x male Quick-test adapter, S.S
    Ralston Instruments XTHA-FRS0 DP Transmitter Adapter, 5/16" -24 UNF x male Quick-test Adapter
    Order # XTHA-FRS0 Mfg # XTHA-FRS0
    $78.66
  • Ralston Instruments QTHA-2MS0
    Ralston Instruments QTHA 1/4" Male NPT x Male Quick-test no Check-valve, Stainless Steel Adapter
    Order # QTHA-2MS0 Mfg # QTHA-2MS0
    $25.95
  • Ralston Instruments QTHA-2TB0 1/4" Tube Adapter for Quick-Test Hose, Brass
    Ralston Instruments QTHA-2TB0 1/4" Tube Adapter for Quick-Test Hose, Brass
    Order # QTHA-2TB0 Mfg # QTHA-2TB0
    $18.94
  • Rent from the Test and Measurement Equipment Experts

    • check Dedicated rental experts are ready to help you find the right piece of equipment and determine the best course for rental
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  • Ralston Instruments QTFT-2MS0
    Ralston Instruments QTFT-2MS0 1/4" Male NPT x Male Quick-test, no Check-valve with Cap & Chain, Stainless Steel Adapter
    Order # QTFT-2MS0 Mfg # QTFT-2MS0
    $46.23
  • Ralston Instruments QTHA-4TB0 1/2" Tube Fitting x Male Quick Test, No Check Valve Adapter
    Ralston Instruments QTHA-4TB0 1/2" Tube Fitting x Male Quick Test, No Check Valve Adapter
    Order # QTHA-4TB0 Mfg # QTHA-4TB0
    $32.17
  • Ralston Instruments QTHA-3TS0 3/8" Tube fitting x male QT, no check-valve, Stainless Steel
    Ralston Instruments QTHA-3TS0 3/8" Tube fitting x male QT, no check-valve, Stainless Steel
    Order # QTHA-3TS0 Mfg # QTHA-3TS0
    $77.91
  • Ralston Instruments QTHA-2FBA 1/4" NPTF x Female Quick-Test No Check-valve, Brass Adapter
    Ralston Instruments QTHA-2FBA 1/4" NPTF x Female Quick-Test No Check-valve, Brass Adapter
    Order # QTHA-2FBA Mfg # QTHA-2FBA
    $22.31
  • Ralston Instruments QTFT-2MB1-RT 1/4" M BSPT x M Quick-test, with check valve, cap and chain, Brass Adapter
    Ralston Instruments QTFT-2MB1-RT 1/4" M BSPT x M Quick-test, with check valve, cap and chain, Brass Adapter
    Order # QTFT-2MB1-RT Mfg # QTFT-2MB1-RT
    $40.05
  • Ralston Instruments QTHA-2TS0 1/4" Tube Fitting x Male Quick- test, no Check-valve, Stainless Steel
    Ralston Instruments QTHA-2TS0 1/4" Tube Fitting x Male Quick- test, no Check-valve, Stainless Steel
    Order # QTHA-2TS0 Mfg # QTHA-2TS0
    $54.61
  • Ralston Instruments QTFT-2MB0
    Ralston Instruments QTFT-2MB0 1/4" Male NPT x Male Quick-test, no Check-valve with Cap & Chain, Brass Adapter
    Order # QTFT-2MB0 Mfg # QTFT-2MB0
    $25.96
  • Ralston Instruments QTHA-2MB0 1/4" Male NPT x Quick-test no Check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB0 1/4" Male NPT x Quick-test no Check-valve, Brass Adapter
    Order # QTHA-2MB0 Mfg # QTHA-2MB0
    $13.15
  • Ralston Instruments QTFT-4MS0 1/2" Male NPT x Male QT, no check valve with Cap & Chain Adapter
    Ralston Instruments QTFT-4MS0 1/2" Male NPT x Male QT, no check valve with Cap & Chain Adapter
    Order # QTFT-4MS0 Mfg # QTFT-4MS0
    $70.30
  • Ralston Instruments QTFT-2MB1 NPT Male 1/4'' Adapter
    Ralston Instruments QTFT-2MB1 NPT Male 1/4'' Adapter
    Order # QTFT-2MB1 Mfg # QTFT-2MB1
    $33.23
  • Ralston Instruments QT 1/4" Male NPT x male QT, with check-valve Adapter
    Ralston Instruments QT 1/4" Male NPT x male QT, with check-valve Adapter
    Order # QTFT-2MS1 Mfg # QTFT-2MS1
    $60.36
  • Ralston QTFT-RGS0 Bleeder Screw Adapter M8 x 1 gauge valve bleed port
    Ralston Instruments QTFT Bleeder Screw Adapter M8 x 1 gauge valve bleed port
    Order # QTFT-RGS0 Mfg # QTFT-RGS0
    $128.93
  • Ralston QTFT-NPS0 Bleeder Screw Adapter, 1/4"-20 UNC male bleed port x Quick-test
    Ralston Instruments QTFT-NPS0 Bleeder Screw Adapter, 1/4" -20 UNC male bleed port xQuick-test
    Order # QTFT-NPS0 Mfg # QTFT-NPS0
    $128.93
  • Ralston QTFT-EHS0 DP Transmittter Adapter M8 x 1.25 bleed plugs, quick-test fitting
    Ralston Instruments QTFT-EHS0 DP Transmittter Adapter, M8x1.25 bleed plugs, quick-test fitting
    Order # QTFT-EHS0 Mfg # QTFT-EHS0
    $139.24
  • Ralston Instruments QTHA-2FSO-MP
    Ralston Instruments QTHA-2FSO-MP 1/4" Female Medium Pressure (CPF 7/16-20) x Male QT Adapter, Stainless Steel
    Order # QTHA-2FSO-MP Mfg # QTHA-2FS0-MP
    $60.55
  • Ralston Instruments QTHA-NPS0
    Ralston Instruments QTHA-NPS0 1/4" -20 UNC Male Bleed Port x Male Quick-test Adapter, Stainless Steel
    Order # QTHA-NPS0 Mfg # QTHA-NPS0
    $104.19
  • Ralston QTHA-PMS0-0.125-1.5 Pete's Plug
    Ralston Instruments QTHA-PMS0-0.125-1.5 Petes Plug, Male Quick-test Adapter, Stainless Steel
    Order # QTHA-PMS0-0.125-1.5 Mfg # QTHA-PMS0-0.125-1.5
    $109.31
  • Ralston Instruments QTHA-5FSF-QD 5/8" female 37 degree flare (AN/JIC -10) x male Quick-test adapter, S.S
    Ralston Instruments QTHA-5FSF-QD 5/8" Female 37 Degree Flare x Male Quick-test Adapter, Stainless Steel adapter
    Order # QTHA-5FSF-QD Mfg # QTHA-5FSF-QD
    $157.68
  • Ralston XTFT-FRS0 Male Quick-test XT with Cap and Chain
    Ralston Instruments XTFT-FRS0 Male Quick-test XT with Cap and Chain, 0-10000psi, Stainless Steel adapter
    Order # XTFT-FRS0 Mfg # XTFT-FRS0
    $125.95
  • Ralston Instruments QTHA-4FSF-QD
    Ralston Instruments QTHA-4FSF-QD 1/2" female 37 degree flare x male Quick-test, Stainless Steel adapter
    Order # QTHA-4FSF-QD Mfg # QTHA-4FSF-QD
    $162.87
  • Ralston Instruments QTHA-3MS0-AN-QD 3/8" female 37 degree flare (H06 AN/JIC) x male Quick-test, S.S.
    Ralston Instruments QTHA-3MS0-AN-QD 3/8" Female 37degree Flare x Male Quick-test, Stainless Steel adapter
    Order # QTHA-3MS0-AN-QD Mfg # QTHA-3MS0-AN-QD
    $64.87
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