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-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
  • $30.13
  • $92.76
  • Ralston Instruments QTFT-HHSB Hose union - male QT x male QT Adapter
    Ralston Instruments QTFT-HHSB Hose union - male QT x male QT Adapter
    Order # QTFT-HHSB Mfg # QTFT-HHSB
    $111.94
  • 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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  • 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
    $114.24
  • Ralston Instruments QTFT-1MS0-QD 1/8" Male NPT Quick-connect x Male QT with cap & chain, Stainless Steel Adapter
    Ralston Instruments QTFT-1MS0-QD 1/8" Male NPT Quick-connect x Male QT with cap & chain, Stainless Steel Adapter
    Order # QTFT-1MS0-QD Mfg # QTFT-1MS0-QD
    Special Price $141.52 Save 1 % Regular Price $141.53
  • 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
    Special Price $48.90 Save 1 % Regular Price $48.91
  • 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
    $54.71
  • Ralston Instruments QTHA-3SSA Female Quick-test Outlet Port, Stainless Steel
    Ralston Instruments QTHA-3SSA Female Quick-test Outlet Port, Stainless Steel
    Order # QTHA-3SSA Mfg # QTHA-3SSA
    Special Price $71.29 Save 1 % Regular Price $71.30
  • 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-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
    Special Price $173.74 Save 1 % Regular Price $173.75
  • 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 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-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 $191.87 Save 1 % Regular Price $191.88
  • 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
    $36.42
  • 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
    $79.25
  • 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
  • Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Ralston Instruments XTFT-CAPS Cap and chain, Stainless Steel
    Order # XTFT-CAPS Mfg # XTFT-CAPS
    $59.63
  • 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
    $114.24
  • Special Price $150.10 Save 1 % Regular Price $150.11
  • 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 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
    $328.31
  • 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
    $163.32
  •  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
    $133.36
  • 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
    $110.38
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