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-3SB0-LV Male Quick-test outlet port for APGV pumps
    Ralston Instruments QTHA-3SB0-LV Male Quick-test outlet port for APGV pumps
    Order # QTHA-3SB0-LV Mfg # QTHA-3SB0-LV
    $18.17
  • Ralston Instruments QTHA-3SBA Female Quick-test, Brass
    Ralston Instruments QTHA-3SBA Female Quick-test, Brass
    Order # QTHA-3SBA Mfg # QTHA-3SBA
    $36.14
  • 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
    $60.44
  • Ralston Instruments QTHA-3MB1 3/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Ralston Instruments QTHA-3MB1 3/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Order # QTHA-3MB1 Mfg # QTHA-3MB1
    $35.00
  • Rent from the Test and Measurement Equipment Experts

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  • Ralston Instruments QTHA-3MB0-RS 3/8" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-3MB0-RS 3/8" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Order # QTHA-3MB0-RS Mfg # QTHA-3MB0-RS
    $45.23
  • 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
    $40.42
  • 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
    $50.87
  • Ralston Instruments QTHA-3FBA-RG G 3/8" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-3FBA-RG G 3/8" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Order # QTHA-3FBA-RG Mfg # QTHA-3FBA-RG
    $43.26
  • 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 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 QTHA-2MSA-XH High Pressure Adapter, 1/4" Male HIP x Female QT, Stainless Steel Adapter
    Ralston Instruments QTHA-2MSA-XH High Pressure Adapter, 1/4" Male HIP x Female QT, Stainless Steel Adapter
    Order # QTHA-2MSA-XH Mfg # QTHA-2MSA-XH
    $71.79
  • Ralston Instruments QTHA-2MB0-RS 1/4" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-2MB0-RS 1/4" MaleBSPP (ISO228/1) x Male QT, no check valve, Brass Adapter
    Order # QTHA-2MB0-RS Mfg # QTHA-2MB0-RS
    $44.09
  • Ralston Instruments QTHA-2FS1 1/4" Female NPT x Male Quick-test
    Ralston Instruments QTHA-2FS1 1/4" Female NPT x MaleQuick-test with Check-valve, Stainless Steel Adapter
    Order # QTHA-2FS1 Mfg # QTHA-2FS1
    $75.77
  •  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
    $93.26
  • Ralston Instruments QTHA-2FSA-AN-QD 1/4" female 37 degree flare x female Quick-test, no check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-2FSA-AN-QD 1/4" female 37 degree flare x female Quick-test, no check-valve, Stainless Steel Adapter
    Order # QTHA-2FSA-AN-QD Mfg # QTHA-2FSA-AN-QD
    $133.37
  • 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
    $15.01
  • 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
    $47.09
  • Ralston Instruments QTHA-1MB1-RT 1/8" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Ralston Instruments QTHA-1MB1-RT 1/8" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Order # QTHA-1MB1-RT Mfg # QTHA-1MB1-RT
    $26.33
  • 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
    $21.19
  • 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
    $47.45
  • 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-1FB1 NPT Female Adapter with Check Valve
    Ralston Instruments QTHA-1FB1 NPT Female Adapter with Check Valve
    Order # QTHA-1FB1 Mfg # QTHA-1FB1
    $24.74
  • Ralston Instruments QTHA-1FB0-RT 1/8" Female BSPT x Male Quick- Test, No Check Valve, Brass Adapter
    Ralston Instruments QTHA-1FB0-RT 1/8" Female BSPT x Male Quick- Test, No Check Valve, Brass Adapter
    Order # QTHA-1FB0-RT Mfg # QTHA-1FB0-RT
    $15.01
  • Ralston Instruments QTHA-1FB0-RG BSPP Female Adapter, 1/8''
    Ralston Instruments QTHA-1FB0-RG BSPP Female Adapter, 1/8''
    Order # QTHA-1FB0-RG Mfg # QTHA-1FB0-RG
    $35.82
  • 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
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