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-4FB0-RG G 1/2" BSPP Female x QT Male Brass, No Check-valve Adapter
    Ralston Instruments QTHA-4FB0-RG G 1/2" BSPP Female x QT Male Brass, No Check-valve Adapter
    Order # QTHA-4FB0-RG Mfg # QTHA-4FB0-RG
    $65.69
  • Ralston Instruments QTHA-4FBA-RG 1/2" Female BSPP x Female QuickTest No Check Valve, Brass Adapter
    Ralston Instruments QTHA-4FBA-RG 1/2" Female BSPP x Female QuickTest No Check Valve, Brass Adapter
    Order # QTHA-4FBA-RG Mfg # QTHA-4FBA-RG
    Special Price $75.41 Save 1 % Regular Price $75.42
  • Ralston Instruments QTHA-3S1F 1/8'' Female NPT Adapter
    Ralston Instruments QTHA-3S1F 1/8'' Female NPT Adapter
    Order # QTHA-3S1F Mfg # QTHA-3S1F
    $26.48
  • Ralston Instruments QTHA-3MB1 3/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Ralston Instruments QTHA-3MB1 3/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Order # QTHA-3MB1 Mfg # QTHA-3MB1
    $48.59
  • 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-3MB0-RS 3/8" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-3MB0-RS 3/8" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Order # QTHA-3MB0-RS Mfg # QTHA-3MB0-RS
    $62.79
  • 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
    Special Price $186.28 Save 1 % Regular Price $186.29
  • Ralston Instruments QTHA-3FBA-RG G 3/8" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-3FBA-RG G 3/8" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Order # QTHA-3FBA-RG Mfg # QTHA-3FBA-RG
    $60.06
  • Ralston Instruments QTHA-2MSA-XH High Pressure Adapter, 1/4" Male HIP x Female QT, Stainless Steel Adapter
    Ralston Instruments QTHA-2MSA-XH High Pressure Adapter, 1/4" Male HIP x Female QT, Stainless Steel Adapter
    Order # QTHA-2MSA-XH Mfg # QTHA-2MSA-XH
    $99.67
  • Ralston Instruments QTHA-2MB0-RS 1/4" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-2MB0-RS 1/4" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Order # QTHA-2MB0-RS Mfg # QTHA-2MB0-RS
    Special Price $61.21 Save 1 % Regular Price $61.22
  •  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
    $129.47
  • Ralston Instruments QTHA-2FB0-RT 1/4" FemaleBSPT (ISO 7/1) x Male QT no Check valve, Brass Adapter
    Ralston Instruments QTHA-2FB0-RT 1/4" FemaleBSPT (ISO 7/1) x Male QT no Check valve, Brass Adapter
    Order # QTHA-2FB0-RT Mfg # QTHA-2FB0-RT
    Special Price $20.83 Save 1 % Regular Price $20.84
  • Ralston Instruments QTHA-1MB1-RT 1/8" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Ralston Instruments QTHA-1MB1-RT 1/8" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Order # QTHA-1MB1-RT Mfg # QTHA-1MB1-RT
    $36.55
  • Ralston Instruments QTHA-1FB0-RG BSPP Female Adapter, 1/8''
    Ralston Instruments QTHA-1FB0-RG BSPP Female Adapter, 1/8''
    Order # QTHA-1FB0-RG Mfg # QTHA-1FB0-RG
    Special Price $49.73 Save 1 % Regular Price $49.74
  • Ralston Instruments QTHA-HSTB-1F Tee-male QT run x male QT run x 1/8" female NPT branch, Brass
    Ralston Instruments QTHA-HSTB-1F Tee-male QT run x male QT run x 1/8" female NPT branch, Brass
    Order # QTHA-HSTB-1F Mfg # QTHA-HSTB-1F
    $127.48
  • Ralston Instruments QTHA-HFCB-1F Tee-male QT run x female QT run x 1/8" female NPT branch, Brass
    Ralston Instruments QTHA-HFCB-1F Tee-male QT run x female QT run x 1/8" female NPT branch, Brass
    Order # QTHA-HFCB-1F Mfg # QTHA-HFCB-1F
    $130.10
  • Ralston Instruments QTHA-HFBB-2F 1/4" female NPT x male Quick-test bulkhead union, Brass Adapter
    Ralston Instruments QTHA-HFBB-2F 1/4" female NPT x male Quick-test bulkhead union, Brass Adapter
    Order # QTHA-HFBB-2F Mfg # QTHA-HFBB-2F
    Special Price $86.72 Save 1 % Regular Price $86.73
  • Ralston Instruments QTHA-BLS0-HC Block and Bleed valve, Stainless Steel Adapter
    Ralston Instruments QTHA-BLS0-HC Block and Bleed valve, Stainless Steel Adapter
    Order # QTHA-BLS0-HC Mfg # QTHA-BLS0-HC
    Special Price $442.35 Save 1 % Regular Price $442.36
  • 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
    Special Price $48.74 Save 1 % Regular Price $48.75
  • 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
    Special Price $137.00 Save 1 % Regular Price $137.01
  • Ralston Instruments QTFT-1MB0-RT 1/8" male BSPT (ISO 7/1) x male QT, no check-valve Adapter
    Ralston Instruments QTFT-1MB0-RT 1/8" male BSPT (ISO 7/1) x male QT, no check-valve Adapter
    Order # QTFT-1MB0-RT Mfg # QTFT-1MB0-RT
    $47.79
  • Ralston Instruments XTHA-4FS0-QD
    Ralston Instruments XTHA-4FS0-QD 1/2" female NPT Quick-connect x male Quick-test XT, Stainless Steel Adapter
    Order # XTHA-4FS0-QD Mfg # XTHA-4FS0-QD
    $394.59
  • Ralston Instruments XTHA-2FS0-QD
    Ralston Instruments XTHA-2FS0-QD 1/4" female NPT Quick-connect x male Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2FS0-QD Mfg # XTHA-2FS0-QD
    $340.81
  • 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
    Special Price $123.00 Save 1 % Regular Price $123.01
  • Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Order # XTFT-CAPS Mfg # XTFT-CAPS
    $57.90
  • Ralston Instruments XT 3 ft Quick-test XT hose, (1) 1/8" Female NPT
    Ralston Instruments XT 3 ft Quick-test XT hose, (1) 1/8" Female NPT
    Order # 95079PR-RALSTON Mfg # XTXT-HOS-3FT
    $239.78
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