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-7SS0 7/16-20 Male SAE/MS x Male Quick-test, Stainless Steel Adapter
    Ralston Instruments QTHA-7SS0 7/16-20 Male SAE/MS x Male Quick-test, Stainless Steel Adapter
    Order # QTHA-7SS0 Mfg # QTHA-7SS0
    $55.42
  • Ralston Instruments QTHA-2MS1 1/4" Male NPT x Male QT, with Check- Valve, Stainless Steel Adapter
    Ralston Instruments QTHA-2MS1 1/4" Male NPT x Male QT, with Check- Valve, Stainless Steel Adapter
    Order # QTHA-2MS1 Mfg # QTHA-2MS1
    $38.26
  • Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Order # XTFT-CAPS Mfg # XTFT-CAPS
    $41.70
  • Ralston Instruments QTFT-5SB0 QTVC Outlet Port, Male Quick-test with Cap and Chain Adapter
    Ralston Instruments QTFT-5SB0 QTVC Outlet Port, Male Quick-test with Cap and Chain Adapter
    Order # QTFT-5SB0 Mfg # QTFT-5SB0
    $35.79
  • Rent from the Test and Measurement Equipment Experts

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  • Ralston Instruments XTHA-2MS0-MP
    Ralston Instruments XTHA-2MS0-MP 7/16-20 Male Medium Pressure x Male Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2MS0-MP Mfg # XTHA-2MS0-MP
    $79.89
  • Ralston Instruments QTHA-BLB0-HC Block & bleed valve - Male QT inlet x female QT outlet, Brass Adapter
    Ralston Instruments QTHA-BLB0-HC Block & bleed valve - Male QT inlet x female QT outlet, Brass Adapter
    Order # QTHA-BLB0-HC Mfg # QTHA-BLB0-HC
    $229.59
  •  QTHA-2FS0-RG-QD 1/4" female BSPP quick-disconne x male quick-test, S.S
    Ralston Instruments QTHA-2FS0-RG-QD 1/4" female BSPP quick-disconnet x male quick-test, Stainless Steel Adapter
    Order # QTHA-2FS0-RG-QD Mfg # QTHA-2FS0-RG-QD
    $93.26
  • Ralston Instruments QTHA-5SB0 QTVC Outlet port, male Quick-test, Brass Adapter
    Ralston Instruments QTHA-5SB0 QTVC Outlet port, male Quick-test, Brass Adapter
    Order # QTHA-5SB0 Mfg # QTHA-5SB0
    $21.87
  • Ralston Instruments QTFT-3MS0
    Ralston Instruments QTFT-3MS0 3/8" Male NPT x Male Quick-test, no Check-valve with Cap & Chain, Stainless Steel Adapter
    Order # QTFT-3MS0 Mfg # QTFT-3MS0
    $65.32
  • Ralston Instruments XTHA-2MS0-XH 1/4" Male High Pressure x Male Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2MS0-XH 1/4" Male High Pressure x Male Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2MS0-XH Mfg # XTHA-2MS0-XH
    $68.94
  • Ralston Instruments QTHA-1MS1 1/8" MNPTx male QT with Check-valve Stainless Steel Adapter
    Ralston Instruments QTHA-1MS1 1/8" MNPTx male QT with Check-valve Stainless Steel Adapter
    Order # QTHA-1MS1 Mfg # QTHA-1MS1
    $47.09
  • Ralston Instruments QTFT 1/4" -28 UNF x Male QT Adapter
    Ralston Instruments QTFT 1/4" -28 UNF x Male QT Adapter
    Order # QTFT-HNS0 Mfg # QTFT-HNS0
    $77.19
  • Ralston Instruments QTFT-4MB1 1/2" male NPT x male Quick-test with check-valve Adapter
    Ralston Instruments QTFT-4MB1 1/2" male NPT x male Quick-test with check-valve Adapter
    Order # QTFT-4MB1 Mfg # QTFT-4MB1
    $45.40
  • 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-QD
    Ralston Instruments QTHA-3MS0-QD 3/8" Male NPT Quick-connect x Male Quick-test, Stainless Steel adapter
    Order # QTHA-3MS0-QD Mfg # QTHA-3MS0-QD
    $114.21
  • Ralston Instruments QTFT-3SS0 Male Quick-test Outlet Port with Cap & Chain, Stainless Steel
    Ralston Instruments QTFT-3SS0 Male Quick-test Outlet Port with Cap & Chain, Stainless Steel
    Order # QTFT-3SS0 Mfg # QTFT-3SS0
    $51.77
  • Ralston Instruments QTFT-4MS0-QD 1/2" Male NPT Quick-connect x Male Quick-test
    Ralston Instruments QTFT-4MS0-QD 1/2" NPTM Quick-connect x Male Quick-test with Cap & Chain, Stainless Steel adapter
    Order # QTFT-4MS0-QD Mfg # QTFT-4MS0-QD
    $123.75
  • Ralston Instruments QTFT-2MS0-RS G 1/4" male BSPP (ISO 228/1) x male QT, no check-valve Adapter
    Ralston Instruments QTFT-2MS0-RS G 1/4" male BSPP (ISO 228/1) x male QT, no check-valve Adapter
    Order # QTFT-2MS0-RS Mfg # QTFT-2MS0-RS
    $98.68
  • Ralston Instruments QTFT-PLGB
    Ralston Instruments QTFT-PLGB Quick-test Hose Plug & Chain only, Brass, 0-5K PSI/0-140F
    Order # QTFT-PLGB Mfg # QTFT-PLGB
    $25.47
  • Ralston Instruments QTHA-BLB0-HH
    Ralston Instruments QTHA-BLB0-HH Block&Bleed Valve, Male QT Inlet x Male AT Outlet, Brass Adapter
    Order # QTHA-BLB0-HH Mfg # QTHA-BLB0-HH
    $205.49
  • Ralston Instruments XTHA-1FS0 1/8" female NPT x male Quick-test XT 10KPSI Adapter
    Ralston Instruments XTHA-1FS0 1/8" female NPT x male Quick-test XT 10KPSI Adapter
    Order # XTHA-1FS0 Mfg # XTHA-1FS0
    $72.85
  • Ralston Instruments QTHA-MTB0-6MM
    Ralston Instruments QTHA-MTB0-6MM 6mm Tube Fitting x Male Quick- Test, No Check Valve, Brass
    Order # QTHA-MTB0-6MM Mfg # QTHA-MTB0-6MM
    $29.75
  • 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
    $37.97
  • Ralston Instruments XTHA-2FSF-QD Female 37 degree Flare x Male Quick-test, no Check-valve, Stainless Steel Adapter
    Ralston Instruments XTHA-2FSF-QD Female 37 degree Flare x Male Quick-test, no Check-valve, Stainless Steel Adapter
    Order # XTHA-2FSF-QD Mfg # XTHA-2FSF-QD
    $237.95
  • Ralston Instruments QTHA-2FSA-MP
    Ralston Instruments QTHA-2FSA-MP 1/4" Female Medium Pressure (CPF 7/16-20) x Female QT Adapter, Stainless Steel
    Order # QTHA-2FSA-MP Mfg # QTHA-2FSA-MP
    $76.38
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