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-4MB0
    Ralston Instruments QTHA-4MB0 1/2" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-4MB0 Mfg # QTHA-4MB0
    $25.82
  • Ralston Instruments QTHA-HHSU
    Ralston Instruments QTHA-HHSU Hose Union, Male QT x Male QT, Stainless Steel
    Order # QTHA-HHSU Mfg # QTHA-HHSU
    $37.99
  • Ralston Instruments QTFT-PLGS SS Quick-test Hose Plug & Chain only
    Ralston Instruments QTFT-PLGS Stainless Steel Quick-test Hose Plug & Chain only
    Order # QTFT-PLGS Mfg # QTFT-PLGS
    $36.09
  • 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
    $97.07
  • 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 QTHA-HSTE Male Quick-test run x male Quick-test run x male Quick-test branch tee, Brass
    Ralston Instruments QTHA-HSTE Male Quick-test run x male Quick-test run x male Quick-test branch tee, Brass
    Order # QTHA-HSTE Mfg # QTHA-HSTE
    $73.26
  • Ralston Instruments QTHA-2MSA-MP Medium Pressure x Female Quick- test Adapter, Stainless Steel
    Ralston Instruments QTHA-2MSA-MP Medium Pressure x Female Quick- test Adapter, Stainless Steel
    Order # QTHA-2MSA-MP Mfg # QTHA-2MSA-MP
    $75.71
  • Ralston Instruments QTHA-2FS0-QD 1/4" Female NPT x Male QT, no check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-2FS0-QD 1/4" Female NPT x Male QT, no check-valve, Stainless Steel Adapter
    Order # QTHA-2FS0-QD Mfg # QTHA-2FS0-QD
    $78.01
  • Ralston Instruments QTHA-HCBL-45 Male Quick-test x Female Quick-test Adapter
    Ralston Instruments QTHA-HCBL-45 Male Quick-test x Female Quick-test Adapter
    Order # QTHA-HCBL-45 Mfg # QTHA-HCBL-45
    $78.39
  • Ralston Instruments QTHA-4FB0 1/2" NPTF x Quick-test Male, No Check-valve, Brass Connector Adapter
    Ralston Instruments QTHA-4FB0 1/2" NPTF x Quick-test Male, No Check-valve, Brass Connector Adapter
    Order # QTHA-4FB0 Mfg # QTHA-4FB0
    $37.63
  • Ralston Instruments QTHA-1MB0
    Ralston Instruments QTHA-1MB0 1/8" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-1MB0 Mfg # QTHA-1MB0
    $14.28
  • 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
    $54.01
  • Ralston Instruments QTHA-2FBA-RG G 1/4" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-2FBA-RG G 1/4" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Order # QTHA-2FBA-RG Mfg # QTHA-2FBA-RG
    $40.82
  • Ralston Instruments QTFT-1MB0 1/8" Male NPT x Male Quick-test valve, cap/chain, Brass Adapter
    Ralston Instruments QTFT-1MB0 1/8" Male NPT x Male Quick-test valve, cap/chain, Brass Adapter
    Order # QTFT-1MB0 Mfg # QTFT-1MB0
    $26.45
  • Ralston Instruments QTHA-2FS0 1/4" Female NPT x Male Quick-test no Check-valve, Stainless Steel
    Ralston Instruments QTHA-2FS0 1/4" Female NPT x Male Quick-test no Check-valve, Stainless Steel
    Order # QTHA-2FS0 Mfg # QTHA-2FS0
    $60.61
  • Ralston Instruments QTHA-HSHS Hose union - male QT x male QT, Brass
    Ralston Instruments QTHA-HSHS Hose union - male QT x male QT, Brass
    Order # QTHA-HSHS Mfg # QTHA-HSHS
    $17.05
  • Ralston Instruments XTFT-2MS0 1/4" MNPT x male Quick-test XT
    Ralston Instruments XTFT-2MS0 1/4" MNPT x male Quick-test XT
    Order # XTFT-2MS0 Mfg # XTFT-2MS0
    $96.12
  • Ralston Instruments QTHA-TVLS-HC Male Quick-test x female QT, in-line vent valve, Stainless Steel
    Ralston Instruments QTHA-TVLS-HC Male Quick-test x female QT, in-line vent valve, Stainless Steel
    Order # QTHA-TVLS-HC Mfg # QTHA-TVLS-HC
    $231.45
  • Ralston Instruments QTHA-TVLB-HC In-line Vent Valve, Male QT x Female QT, Brass
    Ralston Instruments QTHA-TVLB-HC In-line Vent Valve, Male QT x Female QT, Brass
    Order # QTHA-TVLB-HC Mfg # QTHA-TVLB-HC
    $116.26
  • Ralston Instruments QTHA-2FSA 1/4" Female NPT x Female Quick-test, no Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-2FSA 1/4" Female NPT x Female Quick-test, no Check-valve, Stainless Steel Adapter
    Order # QTHA-2FSA Mfg # QTHA-2FSA
    $53.94
  • Ralston Instruments XTHA-2MSA 1/4" male NPT x female Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2MSA 1/4" male NPT x female Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2MSA Mfg # XTHA-2MSA
    $61.67
  • Ralston Instruments QTHA-4TS0 1/2" Tube Fitting x Male QT, no Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-4TS0 1/2" Tube Fitting x Male QT, no Check-valve, Stainless Steel Adapter
    Order # QTHA-4TS0 Mfg # QTHA-4TS0
    $89.82
  • Ralston Instruments QTFT-FRS0 5/16" -24 UNF x Male QT Adapter
    Ralston Instruments QTFT-FRS0 5/16" -24 UNF x Male QT Adapter
    Order # QTFT-FRS0 Mfg # QTFT-FRS0
    $72.33
  • Ralston QTHA-2FSF-QD 1/4" female 37 degree flare x male Quick-test
    Ralston Instruments QTHA-2FSF-QD 1/4" Female 37 Degree Flare x Male QT, No Check Valve, Stainless Steel Adapter
    Order # QTHA-2FSF-QD Mfg # QTHA-2FSF-QD
    $98.99
  • Ralston Instruments QTHA-CCBU Hose Union, Female QT x Female QT, Brass Adapter
    Ralston Instruments QTHA-CCBU Hose Union, Female QT x Female QT, Brass Adapter
    Order # QTHA-CCBU Mfg # QTHA-CCBU
    $33.63
  • Order the Ralston Instruments QTFT-CAPB Cap and chain, brass (for any male Quick-test adapter)
    Ralston Instruments QTFT-CAPB Cap & Chain Brass for Q.T. Adaptor
    Order # QTFT-CAPB Mfg # QTFT-CAPB
    $13.47
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