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-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
    $208.55
  • 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
    $50.16
  • 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 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
    $148.68
  • Rent from the Test and Measurement Equipment Experts

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  • 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
    $78.39
  • Ralston Instruments QTVF-000S Shut-off Valve, 1/4" MNPT x 1/4" FNPT with Male QT Test Port, Stainless Steel
    Ralston Instruments QTVF-000S Shut-off Valve, 1/4" MNPT x 1/4" FNPT with Male QT Test Port, Stainless Steel
    Order # QTVF-000S Mfg # QTVF-000S
    $160.68
  • 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
    $91.82
  • 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
    $128.93
  • 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
    $104.19
  • 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 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
    $109.31
  • 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
    $66.23
  • 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
    $98.97
  • 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
  • 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 QTFT-4MB1 1/2" male NPT x male Quick-test with check-valve Adapter
    Ralston Instruments QTFT-4MB1 1/2" male NPT x male Quick-test with check-valve Adapter
    Order # QTFT-4MB1 Mfg # QTFT-4MB1
    $45.40
  • 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
    $64.65
  • Ralston Instruments QTHA-TVLS In-line Vent Valve, Male QT x Male, Stainless Steel
    Ralston Instruments QTHA-TVLS In-line Vent Valve, Male QT x Male, Stainless Steel
    Order # QTHA-TVLS Mfg # QTHA-TVLS
    $201.08
  • Ralston Instruments QTHA-RGS0
    Ralston Instruments QTHA-RGS0 Adapter M8 x 1.0 Gauge Valve Bleed Port x Male Quick-test, Stainless Steel
    Order # QTHA-RGS0 Mfg # QTHA-RGS0
    $104.97
  • Ralston QTFT-RGS0 Bleeder Screw Adapter M8 x 1 gauge valve bleed port
    Ralston Instruments QTFT Bleeder Screw Adapter M8 x 1 gauge valve bleed port
    Order # QTFT-RGS0 Mfg # QTFT-RGS0
    $128.93
  • Ralston Instruments QTHA-TVLS-HC Male Quick-test x female QT, in-line vent valve, Stainless Steel
    Ralston Instruments QTHA-TVLS-HC Male Quick-test x female QT, in-line vent valve, Stainless Steel
    Order # QTHA-TVLS-HC Mfg # QTHA-TVLS-HC
    $231.45
  • Ralston Instruments QTHA-1FSA-QD 1/8" Female NPT Quick- disconnect x Female Quick-test Adapter
    Ralston Instruments QTHA-1FSA-QD 1/8" Female NPT Quick- disconnect x Female Quick-test Adapter
    Order # QTHA-1FSA-QD Mfg # QTHA-1FSA-QD
    $94.18
  • Ralston Instruments QTHA-BLS0-HH Block & bleed valve, male QT inlet x male QT outlet, Stainless Steel Adapter
    Ralston Instruments QTHA-BLS0-HH Block & bleed valve, male QT inlet x male QT outlet, Stainless Steel Adapter
    Order # QTHA-BLS0-HH Mfg # QTHA-BLS0-HH
    $313.08
  • 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
    $77.19
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