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-3FB1 3/8" Female NPTx Male QT with Check valve, Brass Adapter
    Ralston Instruments QTHA-3FB1 3/8" Female NPTx Male QT with Check valve, Brass Adapter
    Order # QTHA-3FB1 Mfg # QTHA-3FB1
    $57.80
  • Ralston Instruments QTFT-3MB0-RS
    Ralston Instruments QTFT-3MB0-RS G 3/8" Male BSPP (ISO 228/1) x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTFT-3MB0-RS Mfg # QTFT-3MB0-RS
    $83.84
  • Ralston Instruments QTHA-3FB0-RG BSPP Female Adapter, 3/8''
    Ralston Instruments QTHA-3FB0-RG BSPP Female Adapter, 3/8''
    Order # QTHA-3FB0-RG Mfg # QTHA-3FB0-RG
    $72.74
  • Special Price $85.09 Save 1 % Regular Price $85.10
  • 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
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    • check Same day shipping is available in most cases
  • Ralston Instruments QTHA-TEVR
    Ralston Instruments QTHA-TEVR In-line Fine Adjust Vernier Piston
    Order # QTHA-TEVR Mfg # QTHA-TEVR
    $256.97
  • 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
    $31.27
  • 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
    Special Price $87.58 Save 1 % Regular Price $87.59
  • $92.76
  • 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
    $91.89
  • Ralston Instruments QTFT-2MB0-RS G 1/4" male BSPP (ISO 228/1) x male QT Adapter
    Ralston Instruments QTFT-2MB0-RS G 1/4" male BSPP (ISO 228/1) x male QT Adapter
    Order # QTFT-2MB0-RS Mfg # QTFT-2MB0-RS
    Special Price $72.05 Save 1 % Regular Price $72.06
  • Ralston Instruments QTHA-MFB0-1620 Male QT x Mini-Stainless Steel, 1620 female, Brass Adapter
    Ralston Instruments QTHA-MFB0-1620 Male QT x Mini-Stainless Steel, 1620 female, Brass Adapter
    Order # QTHA-MFB0-1620 Mfg # QTHA-MFB0-1620
    $94.85
  • Ralston Instruments QTHA-3SBA Female Quick-test, Brass
    Ralston Instruments QTHA-3SBA Female Quick-test, Brass
    Order # QTHA-3SBA Mfg # QTHA-3SBA
    $51.68
  • Ralston Instruments QTHA-1FS0 1/8" female NPT x male QT, no check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-1FS0 1/8" female NPT x male QT, no check-valve, Stainless Steel Adapter
    Order # QTHA-1FS0 Mfg # QTHA-1FS0
    $67.85
  • Special Price $114.19 Save 1 % Regular Price $114.20
  • 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
    Special Price $67.33 Save 1 % Regular Price $67.34
  • Ralston Instruments QTHA-3MS1 3/8" Male NPT Male Quick-test Stainless Steel Adapter
    Ralston Instruments QTHA-3MS1 3/8" Male NPT Male Quick-test Stainless Steel Adapter
    Order # QTHA-3MS1 Mfg # QTHA-3MS1
    Special Price $86.42 Save 1 % Regular Price $86.43
  • Ralston Instruments QTHA-2FSO-MP
    Ralston Instruments QTHA-2FSO-MP 1/4" Female Medium Pressure (CPF 7/16-20) x Male QT Adapter, Stainless Steel
    Order # QTHA-2FSO-MP Mfg # QTHA-2FS0-MP
    Special Price $86.58 Save 1 % Regular Price $86.59
  • Ralston Instruments QTHA-HTBB-2T 1/4" tube fitting x male Quick-test bulkhead union, Brass
    Ralston Instruments QTHA-HTBB-2T 1/4" tube fitting x male Quick-test bulkhead union, Brass
    Order # QTHA-HTBB-2T Mfg # QTHA-HTBB-2T
    Special Price $87.11 Save 1 % Regular Price $87.12
  • Special Price $180.10 Save 1 % Regular Price $180.11
  • 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
    $120.26
  • Special Price $182.73 Save 1 % Regular Price $182.74
  • 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
    Special Price $39.42 Save 1 % Regular Price $39.43
  • 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
    Special Price $104.17 Save 1 % Regular Price $104.18
  • Ralston Instruments QTHA-5FSF-QD 5/8" female 37 degree flare (AN/JIC -10) x male Quick-test adapter, S.S
    Ralston Instruments QTHA-5FSF-QD 5/8" Female 37 Degree Flare x Male Quick-test Adapter, Stainless Steel adapter
    Order # QTHA-5FSF-QD Mfg # QTHA-5FSF-QD
    $225.48
  • 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
    Special Price $220.44 Save 1 % Regular Price $220.45
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