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 XTHA-HSTS Male Quick-test XT x male Quick -test XT Hose Tee
    Ralston Instruments XTHA-HSTS Male Quick-test XT x male Quick -test XT Hose Tee
    Order # XTHA-HSTS Mfg # XTHA-HSTS
    $135.96
  • Ralston Instruments XTHA-HHSU Quick-test XT 10000PSI Hose Union, Stainless Steel
    Ralston Instruments XTHA-HHSU Quick-test XT 10000PSI Hose Union, Stainless Steel
    Order # XTHA-HHSU Mfg # XTHA-HHSU
    $61.25
  • Ralston Instruments XTHA-HHSB Male Quick-test XT x male Quick-test XT bulkhead, Stainless Steel adapter
    Ralston Instruments XTHA-HHSB Male Quick-test XT x male Quick-test XT bulkhead, Stainless Steel adapter
    Order # XTHA-HHSB Mfg # XTHA-HHSB
    $88.60
  • 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
  • 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
    • check Transcat provides consultative services on equipment selection, given your existing systems and operations
    • check Ready to use calibrated equipment is is provided quickly in a cost effective and flexible way
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  • 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 QTHA-3SS0-VT Male Quick-test x Pump, Stainless Steel, Viton Seals Adapter
    Ralston Instruments QTHA-3SS0-VT Male Quick-test x Pump, Stainless Steel, Viton Seals Adapter
    Order # QTHA-3SS0-VT Mfg # QTHA-3SS0-VT
    $34.20
  • Ralston Instruments QTFT-3SB0 Male Quick-test outlet port with cap and chain, Brass Adapter
    Ralston Instruments QTFT-3SB0 Male Quick-test outlet port with cap and chain, Brass Adapter
    Order # QTFT-3SB0 Mfg # QTFT-3SB0
    $26.09
  • Ralston Instruments QTHA-2MB1-RT 1/4" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB1-RT 1/4" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Order # QTHA-2MB1-RT Mfg # QTHA-2MB1-RT
    $27.57
  • Ralston Instruments QTHA-MTB0-10MM
    Ralston Instruments QTHA-MTB0-10MM 10mm Tube Fitting x Male Quick- Test, no Check Valve, Brass
    Order # QTHA-MTB0-10MM Mfg # QTHA-MTB0-10MM
    $56.47
  • Ralston Instruments AS-QTFT-CAPS NPAK Cap, Plug, Chain & Hanger Ring to Cover Inlet, Outlet Ports, Stainless Steel
    Ralston Instruments AS-QTFT-CAPS NPAK Cap, Plug, Chain & Hanger Ring to Cover Inlet, Outlet Ports, Stainless Steel
    Order # AS-QTFT-CAPS Mfg # AS-QTFT-CAPS
    $21.07
  • Ralston Instruments QTHA-3FS0 3/8" female NPT x male Quick-test, no check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-3FS0 3/8" female NPT x male Quick-test, no check-valve, Stainless Steel Adapter
    Order # QTHA-3FS0 Mfg # QTHA-3FS0
    $64.87
  • New
    Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test,No Check-Valve,Brass
    Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test, No Check-Valve, Brass adapter
    Order # QTHA-MTB0-12MM Mfg # QTHA-MTB0-12MM
    $77.67
  • Ralston Instruments XTHA-HNS0
    Ralston Instruments XTHA-HNS0 DP Transmitter Adapter, 1/4" -28 UNF x male Quick-test Adapter
    Order # XTHA-HNS0 Mfg # XTHA-HNS0
    $79.89
  • 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 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 QTHA-4FS0-RG-QD 1/2" female BSPP quick-disconnect x male, quick-test, Stainless Steel Adapter
    Ralston Instruments QTHA-4FS0-RG-QD 1/2" female BSPP quick-disconnect x male, quick-test, Stainless Steel Adapter
    Order # QTHA-4FS0-RG-QD Mfg # QTHA-4FS0-RG-QD
    $121.50
  • Ralston Instruments QTHA-4MS1 1/2" NPTM x Male QT with Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-4MS1 1/2" NPTM x Male QT with Check-valve, Stainless Steel Adapter
    Order # QTHA-4MS1 Mfg # QTHA-4MS1
    $64.26
  • Ralston Instruments QTHA-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT, No Check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT, No Check-valve, Brass Adapter
    Order # QTHA-2MB0-RT Mfg # QTHA-2MB0-RT
    $21.79
  • Ralston Instruments QTHA-3FS0-RG-QD 3/8" female BSPP quick-disconnet x male quick-test, Stainless Steel Adapter
    Ralston Instruments QTHA-3FS0-RG-QD 3/8" female BSPP quick-disconnet x male quick-test, Stainless Steel Adapter
    Order # QTHA-3FS0-RG-QD Mfg # QTHA-3FS0-RG-QD
    $134.18
  • 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 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-HCHS
    Ralston Instruments QTHA-HCHS Tee - male QT run x female QT run x male QT branch tee, Stainless Steel
    Order # QTHA-HCHS Mfg # QTHA-HCHS
    $154.16
  • Ralston Instruments QTFT-4MS1 1/2" male NPT x male Quick-test with check-valve Adapter
    Ralston Instruments QTFT-4MS1 1/2" male NPT x male Quick-test with check-valve Adapter
    Order # QTFT-4MS1 Mfg # QTFT-4MS1
    $84.10
  • 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-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
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