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-HSTS Male x male x male Quick-test branch tee, Stainless Steel
    Ralston Instruments QTHA-HSTS Male x male x male Quick-test branch tee, Stainless Steel
    Order # QTHA-HSTS Mfg # QTHA-HSTS
    $108.75
  • Ralston Instruments QTHA-1FS0-QD
    Ralston Instruments QTHA-1FS0-QD 1/8" Female NPT Quick-connect x Male Quick-test, no Check-valve Adapter
    Order # QTHA-1FS0-QD Mfg # QTHA-1FS0-QD
    $69.76
  • Ralston Instruments QTHA-1MS0
    Ralston Instruments QTHA-1MS0 1/8" Male NPT x Male Quick-test, no Check-valve, Stainless Steel Adapter
    Order # QTHA-1MS0 Mfg # QTHA-1MS0
    $27.89
  • Ralston Instruments QTHA-1FBA 1/8" female NPT x female Quick-test, no check-valve, Brass Adapter
    Ralston Instruments QTHA-1FBA 1/8" female NPT x female Quick-test, no check-valve, Brass Adapter
    Order # QTHA-1FBA Mfg # QTHA-1FBA
    $29.72
  • 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 XTHA-2FSA 1/4" female NPT x female Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2FSA 1/4" female NPT x female Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2FSA Mfg # XTHA-2FSA
    $62.08
  • Ralston Instruments QTQT QT Hose, Brass Hose Ends, 1' Hose
    Ralston Instruments QTQT QT Hose, Brass Hose Ends, 1' Hose
    Order # QTQT-HOS1 Mfg # QTQT-HOS-1FT
    $52.31
  • Ralston Instruments QTHA-3MS0 3/8" Male NPT Male Quick-test Stainless Steel Adapter
    Ralston Instruments QTHA-3MS0 3/8" Male NPT Male Quick-test Stainless Steel Adapter
    Order # QTHA-3MS0 Mfg # QTHA-3MS0
    $43.71
  • Ralston Instruments QTHA-1MSA 1/8" Male NPT x Female QT, no check valve, 300 series Stainless Steel Adapter
    Ralston Instruments QTHA-1MSA 1/8" Male NPT x Female QT, no check valve, 300 series Stainless Steel Adapter
    Order # QTHA-1MSA Mfg # QTHA-1MSA
    $49.50
  • Ralston Instruments XTHA-2FS0 1/4 inch female NPT x male Quick-test XT 10KPSI Adapter
    Ralston Instruments XTHA-2FS0 1/4 inch female NPT x male Quick-test XT 10KPSI Adapter
    Order # XTHA-2FS0 Mfg # XTHA-2FS0
    $56.58
  • Ralston Instruments XTHA-2MS0 1/4" Male NPT x Male XT, Adaptor No Check Valve, Stainless Steel
    Ralston Instruments XTHA-2MS0 1/4" Male NPT x Male XT, Adaptor No Check Valve, Stainless Steel
    Order # XTHA-2MS0 Mfg # XTHA-2MS0
    $55.25
  • Ralston Instruments QTHA-CMS0-C580-QD CGA580 Quick-connect Male x Quick-test, no Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-CMS0-C580-QD CGA580 Quick-connect Male x Quick-test, no Check-valve, Stainless Steel Adapter
    Order # QTHA-CMS0-C580-QD Mfg # QTHA-CMS0-C580-QD
    $147.41
  • Ralston Instruments QTHA-HHCB Hose Tee, Brass
    Ralston Instruments QTHA-HHCB Hose Tee, Brass
    Order # QTHA-HHCB Mfg # QTHA-HHCB
    $93.00
  • Ralston Instruments QTFT-3MB0
    Ralston Instruments QTFT-3MB0 3/8" Male NPTxMale Quick-test, no Check-valve with Cap & Chain, Brass Adapter
    Order # QTFT-3MB0 Mfg # QTFT-3MB0
    $35.82
  • Ralston Instruments QTHA-TVLB In-Line Vent Valve, Brass, Male QT x Male QT
    Ralston Instruments QTHA-TVLB In-Line Vent Valve, Brass, Male QT x Male QT
    Order # QTHA-TVLB Mfg # QTHA-TVLB
    $114.58
  • Ralston QTHA-3FSF-QD 3/8" female 37 degree flare x male Quick-test adapter
    Ralston Instruments QTHA-3FSF-QD 3/8" Female 37 degree Flare x Male Quick-test Adapter, Stainless Steel adapter
    Order # QTHA-3FSF-QD Mfg # QTHA-3FSF-QD
    $119.43
  • Ralston Instruments QTHA-3MB0 3/8" Male x Male QT, no Check valve, Brass Adapter
    Ralston Instruments QTHA-3MB0 3/8" Male x Male QT, no Check valve, Brass Adapter
    Order # QTHA-3MB0 Mfg # QTHA-3MB0
    $25.97
  • Ralston Instruments QTHA-HHSU
    Ralston Instruments QTHA-HHSU Hose Union, Male QT x Male QT, Stainless Steel
    Order # QTHA-HHSU Mfg # QTHA-HHSU
    $36.88
  • Ralston Instruments QTHA-2MS0-VT 1/4" male NPT x male Quick-test, no check-valve, Stainless Steel, Viton seals adapter
    Ralston Instruments QTHA-2MS0-VT 1/4" male NPT x male Quick-test, no check-valve, Stainless Steel, Viton seals adapter
    Order # QTHA-2MS0-VT Mfg # QTHA-2MS0-VT
    $27.83
  • Ralston Instruments QTFT-4MB0
    Ralston Instruments QTFT-4MB0 1/2" Male NPT x Male Quick-test, no Check-valve with Cap&Chain, Brass Adapter
    Order # QTFT-4MB0 Mfg # QTFT-4MB0
    $36.88
  • 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
    $19.29
  • Ralston Instruments QTHA-HCHB Male QT Run x Female QT Run x Male QT Tee, Brass
    Ralston Instruments QTHA-HCHB Male QT Run x Female QT Run x Male QT Tee, Brass
    Order # QTHA-HCHB Mfg # QTHA-HCHB
    $82.95
  • Ralston Instruments QTHA-4MB0
    Ralston Instruments QTHA-4MB0 1/2" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-4MB0 Mfg # QTHA-4MB0
    $25.07
  • Ralston Instruments QTHA-2FB1 1/4" Female NPT x Male QT with Check- valve, Brass Adapter
    Ralston Instruments QTHA-2FB1 1/4" Female NPT x Male QT with Check- valve, Brass Adapter
    Order # QTHA-2FB1 Mfg # QTHA-2FB1
    $23.89
  • Ralston Instruments QTFT-1MB1 1/8" male NPT x male Quick-test, with check-valve, with cap and chain, Brass Adapter
    Ralston Instruments QTFT-1MB1 1/8" male NPT x male Quick-test, with check-valve, with cap and chain, Brass Adapter
    Order # QTFT-1MB1 Mfg # QTFT-1MB1
    $31.80
  • Ralston Instruments QTHA-1TS0-QD 1/8" Tube Fitting, Stainless Steel
    Ralston Instruments QTHA-1TS0-QD 1/8" Tube Fitting, Stainless Steel
    Order # QTHA-1TS0-QD Mfg # QTHA-1TS0-QD
    $93.34
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