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 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
    $62.97
  • Ralston Instruments QTHA-2MS0-C580-QD CGA580 Quick-connect x 1/4" Male NPT Adapter, Stainless Steel
    Ralston Instruments QTHA-2MS0-C580-QD CGA580 Quick-connect x 1/4" Male NPT Adapter, Stainless Steel
    Order # QTHA-2MS0-C580-QD Mfg # QTHA-2MS0-C580-QD
    $195.47
  • Ralston Instruments QTHA-CMS0-C580-QD CGA580 Quick-connect Male x Quick-test, no Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-CMS0-C580-QD CGA580 Quick-connect Male x Quick-test, no Check-valve, Stainless Steel Adapter
    Order # QTHA-CMS0-C580-QD Mfg # QTHA-CMS0-C580-QD
    $151.83
  • Ralston Instruments QTHA-6MB0 3/4" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Ralston Instruments QTHA-6MB0 3/4" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-6MB0 Mfg # QTHA-6MB0
    $66.40
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  • Ralston Instruments QTHA-1MS0-QD
    Ralston Instruments QTHA-1MS0-QD 1/8" Male NPT QD (Quick-connect) Adapter, Stainless Steel Adapter
    Order # QTHA-1MS0-QD Mfg # QTHA-1MS0-QD
    $78.94
  • Ralston Instruments SWIV-2FBW 1/4" Female NPT swivel, Brass
    Ralston Instruments SWIV-2FBW 1/4" Female NPT swivel, Brass
    Order # SWIV-2FBW Mfg # SWIV-2FBW
    $27.27
  • Ralston Instruments QTHA-4MB1 1/2" Male NPT x Male QT with Check- valve, Brass Adapter
    Ralston Instruments QTHA-4MB1 1/2" Male NPT x Male QT with Check- valve, Brass Adapter
    Order # QTHA-4MB1 Mfg # QTHA-4MB1
    $32.33
  • Ralston Instruments QTHA-4FS0 1/2" Female NPT x Male Quicktest No Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-4FS0 1/2" Female NPT x Male Quicktest No Check-valve, Stainless Steel Adapter
    Order # QTHA-4FS0 Mfg # QTHA-4FS0
    $60.91
  • Ralston Instruments QTHA-3S2F 1/4" Female NPT, Brass Adapter
    Ralston Instruments QTHA-3S2F 1/4" Female NPT, Brass Adapter
    Order # QTHA-3S2F Mfg # QTHA-3S2F
    $20.41
  • Ralston Instruments QTHA-2MBL 1/4" male NPT x male Quick-test, 90 degree elbow, Brass Adapter
    Ralston Instruments QTHA-2MBL 1/4" male NPT x male Quick-test, 90 degree elbow, Brass Adapter
    Order # QTHA-2MBL Mfg # QTHA-2MBL
    $77.73
  • Ralston Instruments QTHA-2FB0-RG G 1/4" female BSPP (ISO 228/1) x male QT, no check-valve, Brass Adapter
    Ralston Instruments QTHA-2FB0-RG G 1/4" female BSPP (ISO 228/1) x male QT, no check-valve, Brass Adapter
    Order # QTHA-2FB0-RG Mfg # QTHA-2FB0-RG
    $26.55
  • Ralston Instruments QTHA-1MSA 1/8" Male NPT x Female QT, no check valve, 300 series Stainless Steel Adapter
    Ralston Instruments QTHA-1MSA 1/8" Male NPT x Female QT, no check valve, 300 series Stainless Steel Adapter
    Order # QTHA-1MSA Mfg # QTHA-1MSA
    $50.99
  • Ralston Instruments QTHA-1FBA 1/8" female NPT x female Quick-test, no check-valve, Brass Adapter
    Ralston Instruments QTHA-1FBA 1/8" female NPT x female Quick-test, no check-valve, Brass Adapter
    Order # QTHA-1FBA Mfg # QTHA-1FBA
    $30.61
  • Ralston Instruments QTHA-HSTS Male x male x male Quick-test branch tee, Stainless Steel
    Ralston Instruments QTHA-HSTS Male x male x male Quick-test branch tee, Stainless Steel
    Order # QTHA-HSTS Mfg # QTHA-HSTS
    $112.01
  • Ralston Instruments QTHA-HSTE Male Quick-test run x male Quick-test run x male Quick-test branch tee, Brass
    Ralston Instruments QTHA-HSTE Male Quick-test run x male Quick-test run x male Quick-test branch tee, Brass
    Order # QTHA-HSTE Mfg # QTHA-HSTE
    $73.26
  • Ralston Instruments QTHA-HHSB
    Ralston Instruments QTHA-HHSB Male Quick-test x male Quick-test bulkhead union, Stainless Steel
    Order # QTHA-HHSB Mfg # QTHA-HHSB
    $47.84
  • Ralston Instruments QTHA-HHCB Hose Tee, Brass
    Ralston Instruments QTHA-HHCB Hose Tee, Brass
    Order # QTHA-HHCB Mfg # QTHA-HHCB
    $95.79
  • Ralston Instruments QTHA-HCHB Male QT Run x Female QT Run x Male QT Tee, Brass
    Ralston Instruments QTHA-HCHB Male QT Run x Female QT Run x Male QT Tee, Brass
    Order # QTHA-HCHB Mfg # QTHA-HCHB
    $85.44
  • 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 QTFT-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT Adapter
    Ralston Instruments QTFT-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT Adapter
    Order # QTFT-2MB0-RT Mfg # QTFT-2MB0-RT
    $34.64
  • Ralston Instruments QTFT-1MS1 1/8" male NPT x male Quick-test with check-valve Adapter
    Ralston Instruments QTFT-1MS1 1/8" male NPT x male Quick-test with check-valve Adapter
    Order # QTFT-1MS1 Mfg # QTFT-1MS1
    $59.99
  • Ralston Instruments QTFT-1MB1 1/8" male NPT x male Quick-test, with check-valve, with cap and chain, Brass Adapter
    Ralston Instruments QTFT-1MB1 1/8" male NPT x male Quick-test, with check-valve, with cap and chain, Brass Adapter
    Order # QTFT-1MB1 Mfg # QTFT-1MB1
    $32.75
  • Ralston Instruments QTFT-1MB0-RS G 1/8" male BSPP (ISO 228/1) x male QT, no check-valve Adapter
    Ralston Instruments QTFT-1MB0-RS G 1/8" male BSPP (ISO 228/1) x male QT, no check-valve Adapter
    Order # QTFT-1MB0-RS Mfg # QTFT-1MB0-RS
    $33.14
  • Ralston Instruments QTFT-CAPS Cap, Plug, Chain and Hanger Ring
    Ralston Instruments QTFT-CAPS Cap, Plug, Chain and Hanger Ring
    Order # QTFT-CAPS Mfg # QTFT-CAPS
    $21.02
  • Ralston Instruments XTHA-2FSA 1/4" female NPT x female Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2FSA 1/4" female NPT x female Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2FSA Mfg # XTHA-2FSA
    $65.18
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