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 XTFT-HNS0 1/4"-28 UNF DP Transmitter x Male Fitting
    Ralston Instruments XTFT-HNS0 1/4" -28 UNF DP Transmitter x Male QT XT Fitting with Cap & Chain
    Order # XTFT-HNS0 Mfg # XTFT-HNS0
    $115.62
  • Ralston Instruments QTHA-3SB1 Male Quick-test with Check Valve, Brass
    Ralston Instruments QTHA-3SB1 Male Quick-test with Check Valve, Brass
    Order # QTHA-3SB1 Mfg # QTHA-3SB1
    $19.65
  • 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
    $46.45
  • 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
    $25.78
  • Rent from the Test and Measurement Equipment Experts

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  • 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
    $59.14
  • 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
    $31.39
  • Ralston Instruments XTHA-1MS0 1/8" Male NPT x Male XT, no check-valve, Stainless Steel Adapter
    Ralston Instruments XTHA-1MS0 1/8" Male NPT x Male XT, no check-valve, Stainless Steel Adapter
    Order # XTHA-1MS0 Mfg # XTHA-1MS0
    $70.73
  • Ralston Instruments QTHA-1MB0-RS 1/8" Male BSPP (ISO 228/1) x Male QT, no Check valve, Brass Adapter
    Ralston Instruments QTHA-1MB0-RS 1/8" Male BSPP (ISO 228/1) x Male QT, no Check valve, Brass Adapter
    Order # QTHA-1MB0-RS Mfg # QTHA-1MB0-RS
    $19.98
  • Ralston Instruments QTFT-PLGS SS Quick-test Hose Plug & Chain only
    Ralston Instruments QTFT-PLGS Stainless Steel Quick-test Hose Plug & Chain only
    Order # QTFT-PLGS Mfg # QTFT-PLGS
    $35.04
  • 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
    $149.67
  • Ralston XTHA-FRS0 DP Transmitter Adapter, 5/16" - 24 UNF x male Quick-test adapter, S.S
    Ralston Instruments XTHA-FRS0 DP Transmitter Adapter, 5/16" -24 UNF x male Quick-test Adapter
    Order # XTHA-FRS0 Mfg # XTHA-FRS0
    $76.37
  • Ralston Instruments QTHA-4FB0 1/2" NPTF x Quick-test Male, No Check-valve, Brass Connector Adapter
    Ralston Instruments QTHA-4FB0 1/2" NPTF x Quick-test Male, No Check-valve, Brass Connector Adapter
    Order # QTHA-4FB0 Mfg # QTHA-4FB0
    $36.53
  • 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
    $64.47
  • 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
    $19.82
  • Ralston Instruments QTHA-3FB0
    Ralston Instruments QTHA 3/8" NPTF x Quick-test Male, No Check-valve, Brass Connector Adapter
    Order # QTHA-3FB0 Mfg # QTHA-3FB0
    $32.42
  • Ralston Instruments QTHA-1MB1 1/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Ralston Instruments QTHA-1MB1 1/8" Male NPT x Male QT with Check- valve, Brass Adapter
    Order # QTHA-1MB1 Mfg # QTHA-1MB1
    $19.50
  • Ralston Instruments XTHA-2MSA 1/4" male NPT x female Quick-test XT, Stainless Steel Adapter
    Ralston Instruments XTHA-2MSA 1/4" male NPT x female Quick-test XT, Stainless Steel Adapter
    Order # XTHA-2MSA Mfg # XTHA-2MSA
    $59.87
  • 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
    $61.14
  • Ralston Instruments QTHA-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT, No Check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB0-RT 1/4" Male BSPT (ISO 7/1) x Male QT, No Check-valve, Brass Adapter
    Order # QTHA-2MB0-RT Mfg # QTHA-2MB0-RT
    $21.16
  • Ralston Instruments QTFT-1MS0
    Ralston Instruments QTFT-1MS0 1/8" Male NPT x Male Quick-test, no Check-valve with Cap & Chain, Stainless Steel Adapter
    Order # QTFT-1MS0 Mfg # QTFT-1MS0
    $46.90
  • Ralston Instruments QTHA-3SB0 Male Quick-Test, Brass
    Ralston Instruments QTHA-3SB0 Male Quick-Test, Brass
    Order # QTHA-3SB0 Mfg # QTHA-3SB0
    $13.12
  • Ralston Instruments QTHA-1FB0
    Ralston Instruments QTHA-1FB0 1/8" Female NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-1FB0 Mfg # QTHA-1FB0
    $19.00
  • Ralston Instruments QTFT-3MB1
    Ralston Instruments QTFT-3MB1 3/8" NPTM x QT Male with Check valve Cap & Chain, Brass Adapter
    Order # QTFT-3MB1 Mfg # QTFT-3MB1
    $42.01
  • 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
    $57.13
  • 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
    $44.08
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