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-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
  • 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
    $232.90
  • Ralston Instruments XTHA-2MSA-MP Medium Pressure x Female Quick- test XT Adapter, Stainless Steel Adapter
    Ralston Instruments XTHA-2MSA-MP Medium Pressure x Female Quick- test XT Adapter, Stainless Steel Adapter
    Order # XTHA-2MSA-MP Mfg # XTHA-2MSA-MP
    Special Price $121.77 Save 1 % Regular Price $121.78
  • $108.35
  • 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-2MS0-AN-QD 1/4" male 37 degree flare x male Quick-test
    Ralston Instruments QTHA-2MS0-AN-QD 1/4" Male 37 degree Flare x Male Quick-test, Stainless Steel adapter
    Order # QTHA-2MS0-AN-QD Mfg # QTHA-2MS0-AN-QD
    Special Price $71.72 Save 1 % Regular Price $71.73
  • Ralston Instruments QTHA-HFCB-2F Tee-male QT run x female QT run x 1/4" female NPT branch, Brass
    Ralston Instruments QTHA-HFCB-2F Tee-male QT run x female QT run x 1/4" female NPT branch, Brass
    Order # QTHA-HFCB-2F Mfg # QTHA-HFCB-2F
    Special Price $128.18 Save 1 % Regular Price $128.19
  • 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 QTHA-BLB0-2F-2F Block & Bleed Valve-1/4" NPTF Inlet x 1/4" NPTF Outlet, Brass
    Ralston Instruments QTHA-BLB0-2F-2F Block & Bleed Valve-1/4" NPTF Inlet x 1/4" NPTF Outlet, Brass
    Order # QTHA-BLB0-2F-2F Mfg # QTHA-BLB0-2F-2F
    Special Price $298.22 Save 1 % Regular Price $298.23
  • Ralston QTHA-EHS0 DP Transmittter Adapter M8 x 1.25 bleed plugs, S.S
    Ralston Instruments QTHA-EHS0 DP Transmittter Adapter M8 x 1.25 bleed plugs, Stainless Steel
    Order # QTHA-EHS0 Mfg # QTHA-EHS0
    Special Price $90.04 Save 1 % Regular Price $90.05
  • 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 QTHA-PMS0-0.125-1.5 Pete's Plug
    Ralston Instruments QTHA-PMS0-0.125-1.5 Petes Plug, Male Quick-test Adapter, Stainless Steel
    Order # QTHA-PMS0-0.125-1.5 Mfg # QTHA-PMS0-0.125-1.5
    $156.31
  • Ralston Instruments XTHA-2TS0-QD 1/4" Tube Fitting x Male Quick- test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2TS0-QD 1/4" Tube Fitting x Male Quick- test XT, Stainless Steel Adapter
    Order # XTHA-2TS0-QD Mfg # XTHA-2TS0-QD
    $212.61
  • Ralston Instruments QTHA-2MS0-RS G 1/4" M BSPP (ISO 228/1) x MQT, no check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-2MS0-RS G 1/4" M BSPP (ISO 228/1) x MQT, no check-valve, Stainless Steel Adapter
    Order # QTHA-2MS0-RS Mfg # QTHA-2MS0-RS
    Special Price $112.09 Save 1 % Regular Price $112.10
  • $229.77
  • Ralston Instruments QTHA-HSTB-2F Tee-male QT run x male QT run x 1/4" female NPT branch, Brass
    Ralston Instruments QTHA-HSTB-2F Tee-male QT run x male QT run x 1/4" female NPT branch, Brass
    Order # QTHA-HSTB-2F Mfg # QTHA-HSTB-2F
    $131.30
  • Ralston QTFT-NPS0 Bleeder Screw Adapter, 1/4"-20 UNC male bleed port x Quick-test
    Ralston Instruments QTFT-NPS0 Bleeder Screw Adapter, 1/4" -20 UNC male bleed port xQuick-test
    Order # QTFT-NPS0 Mfg # QTFT-NPS0
    Special Price $184.36 Save 1 % Regular Price $184.37
  • Ralston Instruments QTHA-NPS0
    Ralston Instruments QTHA-NPS0 1/4" -20 UNC Male Bleed Port x Male Quick-test Adapter, Stainless Steel
    Order # QTHA-NPS0 Mfg # QTHA-NPS0
    $148.99
  • 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
    $194.42
  • Ralston Instruments QTHA-2MS0-XH
    Ralston Instruments QTHA-2MS0-XH High Pressure Adapter, 1/4" Male HIP x Male QT, Stainless Steel
    Order # QTHA-2MS0-XH Mfg # QTHA-2MS0-XH
    Special Price $94.70 Save 1 % Regular Price $94.71
  • 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 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
  • 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
    $293.85
  • 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-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 XTHA-1MSA
    Ralston Instruments XTHA-1MSA 1/8" NPTM x Quick-test Female XT, Stainless Steel Adapter
    Order # XTHA-1MSA Mfg # XTHA-1MSA
    Special Price $92.44 Save 1 % Regular Price $92.45
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