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-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 XTHA-3MS0-RS 3/8in male BSPP x male Quick-test XT 10KPSI Adapter
    Ralston Instruments XTHA-3MS0-RS 3/8in male BSPP x male Quick-test XT 10KPSI Adapter
    Order # XTHA-3MS0-RS Mfg # XTHA-3MS0-RS
    Special Price $69.96 Save 1 % Regular Price $69.97
  • Ralston Instruments QTHA-MTB0-10MM
    Ralston Instruments QTHA-MTB0-10MM 10mm Tube Fitting x Male Quick- Test, no Check Valve, Brass
    Order # QTHA-MTB0-10MM Mfg # QTHA-MTB0-10MM
    $80.75
  • Ralston Instruments QTHA-3SS0 Male Quick-test, Stainless Steel Adapter
    Ralston Instruments QTHA-3SS0 Male Quick-test, Stainless Steel Adapter
    Order # QTHA-3SS0 Mfg # QTHA-3SS0
    Special Price $45.05 Save 1 % Regular Price $45.06
  • Rent from the Test and Measurement Equipment Experts

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  • 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
    $21.46
  • 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 XTHA-2MS0-XH 1/4" Male High Pressure x Male Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2MS0-XH 1/4" Male High Pressure x Male Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2MS0-XH Mfg # XTHA-2MS0-XH
    $98.58
  • Ralston Instruments QTHA-1FB1 NPT Female Adapter with Check Valve
    Ralston Instruments QTHA-1FB1 NPT Female Adapter with Check Valve
    Order # QTHA-1FB1 Mfg # QTHA-1FB1
    Special Price $35.37 Save 1 % Regular Price $35.38
  • 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
  • New
    Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test,No Check-Valve,Brass
    Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test, No Check-Valve, Brass adapter
    Order # QTHA-MTB0-12MM Mfg # QTHA-MTB0-12MM
    Special Price $111.06 Save 1 % Regular Price $111.07
  • Ralston Instruments QTHA-1MB0-RT 1/8" Male BSPT (ISO 7/1) x Male QT no check valve, Brass Adapter
    Ralston Instruments QTHA-1MB0-RT 1/8" Male BSPT (ISO 7/1) x Male QT no check valve, Brass Adapter
    Order # QTHA-1MB0-RT Mfg # QTHA-1MB0-RT
    $30.30
  • Ralston Instruments QTHA-3MS0-AN-QD 3/8" female 37 degree flare (H06 AN/JIC) x male Quick-test, S.S.
    Ralston Instruments QTHA-3MS0-AN-QD 3/8" Female 37degree Flare x Male Quick-test, Stainless Steel adapter
    Order # QTHA-3MS0-AN-QD Mfg # QTHA-3MS0-AN-QD
    $92.76
  • Ralston Instruments QTHA-3SSA-LD Female Quick-test Outlet Port with Drain Tube (for NPAK-TRS0)
    Ralston Instruments QTHA-3SSA-LD Female Quick-test Outlet Port with Drain Tube (for NPAK-TRS0)
    Order # QTHA-3SSA-LD Mfg # QTHA-3SSA-LD
    $135.06
  • Ralston Instruments QTHA-MMB0-2015 Male M20 x 1.5mm x Male Quick- test Adapter, Brass
    Ralston Instruments QTHA-MMB0-2015 Male M20 x 1.5mm x Male Quick- test Adapter, Brass
    Order # QTHA-MMB0-2015 Mfg # QTHA-MMB0-2015
    Special Price $71.72 Save 1 % Regular Price $71.73
  • Ralston Instruments QTFT-3SB0 Male Quick-test outlet port with cap and chain, Brass Adapter
    Ralston Instruments QTFT-3SB0 Male Quick-test outlet port with cap and chain, Brass Adapter
    Order # QTFT-3SB0 Mfg # QTFT-3SB0
    Special Price $37.30 Save 1 % Regular Price $37.31
  • 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
  • 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 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 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
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