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-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-3MS0-QD
    Ralston Instruments QTHA-3MS0-QD 3/8" Male NPT Quick-connect x Male Quick-test, Stainless Steel adapter
    Order # QTHA-3MS0-QD Mfg # QTHA-3MS0-QD
    $114.21
  • Ralston Instruments QTFT-HFBB-2F Male Quick-test with Cap and Chain x 1/4" Female NPT Adapter
    Ralston Instruments QTFT-HFBB-2F Male Quick-test with Cap and Chain x 1/4" Female NPT Adapter
    Order # QTFT-HFBB-2F Mfg # QTFT-HFBB-2F
    $80.36
  • 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
  • Rent from the Test and Measurement Equipment Experts

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  • Ralston Instruments QTHA-BLB0-HC Block & bleed valve - Male QT inlet x female QT outlet, Brass Adapter
    Ralston Instruments QTHA-BLB0-HC Block & bleed valve - Male QT inlet x female QT outlet, Brass Adapter
    Order # QTHA-BLB0-HC Mfg # QTHA-BLB0-HC
    $229.59
  • Ralston Instruments QTHA-HCCB Hose Tee, Brass
    Ralston Instruments QTHA-HCCB Hose Tee, Brass
    Order # QTHA-HCCB Mfg # QTHA-HCCB
    $97.00
  • 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
  • Ralston Instruments QTHA-4FSA-QD 1/2" FNPT x Quick Disconnect x Male QT, Stainless Steel, no check valve Adapter
    Ralston Instruments QTHA-4FSA-QD 1/2" FNPT x Quick Disconnect x Male QT, Stainless Steel, no check valve Adapter
    Order # QTHA-4FSA-QD Mfg # QTHA-4FSA-QD
    $126.63
  • Ralston Instruments QTHA-2FSA-MP
    Ralston Instruments QTHA-2FSA-MP 1/4" Female Medium Pressure (CPF 7/16-20) x Female QT Adapter, Stainless Steel
    Order # QTHA-2FSA-MP Mfg # QTHA-2FSA-MP
    $76.38
  • Ralston Instruments QTFT-4MS0-QD 1/2" Male NPT Quick-connect x Male Quick-test
    Ralston Instruments QTFT-4MS0-QD 1/2" NPTM Quick-connect x Male Quick-test with Cap & Chain, Stainless Steel adapter
    Order # QTFT-4MS0-QD Mfg # QTFT-4MS0-QD
    $123.75
  • 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-4MB0
    Ralston Instruments QTHA-4MB0 1/2" Male NPT x Male Quick-test, no Check-valve, Brass Adapter
    Order # QTHA-4MB0 Mfg # QTHA-4MB0
    $25.82
  • Ralston Instruments QTHA-2FB0
    Ralston Instruments QTHA-2FB0 1/4" Female NPT x Male Quick-test no Check-valve, Brass Adapter
    Order # QTHA-2FB0 Mfg # QTHA-2FB0
    $16.10
  • Ralston Instruments QTHA-2FBA-RG G 1/4" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Ralston Instruments QTHA-2FBA-RG G 1/4" Female BSPP (ISO 228/1) x Female QT, no check valve, Brass Adapter
    Order # QTHA-2FBA-RG Mfg # QTHA-2FBA-RG
    $40.82
  • Ralston Instruments QTHA-FLTS-HC-40
    Ralston Instruments QTHA-FLTS-HC-40 In-line Filter, 0-5000PSI
    Order # QTHA-FLTS-HC-40 Mfg # QTHA-FLTS-HC-40
    $259.55
  • Ralston Instruments QTHA-CCBU Hose Union, Female QT x Female QT, Brass Adapter
    Ralston Instruments QTHA-CCBU Hose Union, Female QT x Female QT, Brass Adapter
    Order # QTHA-CCBU Mfg # QTHA-CCBU
    $33.63
  • Ralston Instruments QTVF-000B Shut-off valve - 1/4" MNPT x 1/4" FNPT with male QT test port, brass
    Ralston Instruments QTVF-000B Shut-off Valve-1/4" MNPT x 1/4" FNPT with Male QT Test Port, Brass
    Order # QTVF-000B Mfg # QTVF-000B
    $128.01
  • Ralston Instruments QTHA-2MS0-MP
    Ralston Instruments QTHA-2MS0-MP 7/16-20 Male Medium Pressure x Male Quick-test, Stainless Steel Adapter
    Order # QTHA-2MS0-MP Mfg # QTHA-2MS0-MP
    $66.23
  • Ralston Instruments QTFT-2MBL
    Ralston Instruments QTFT-2MBL Male 1/4" NPT x Male Q 90degree elbow w cap & chain, Brass Adapter
    Order # QTFT-2MBL Mfg # QTFT-2MBL
    $93.81
  • Ralston Instruments QTVF-000B-2F-2F Shut-off Valve, 1/4" NPTF x 1/4" NPTF with Male QT Test Port, Brass
    Ralston Instruments QTVF-000B-2F-2F Shut-off Valve, 1/4" NPTF x 1/4" NPTF with Male QT Test Port, Brass
    Order # QTVF-000B-2F-2F Mfg # QTVF-000B-2F-2F
    $178.13
  • Ralston Instruments QTHA-3TB0 3/8" Tube Fitting, x Male Quick
    Ralston Instruments QTHA-3TB0 3/8" Tube Fitting, x Male Quick
    Order # QTHA-3TB0 Mfg # QTHA-3TB0
    $21.23
  • Ralston Instruments QTHA-FRS0 5/16" -24UNF x Male Quick-test, no Check-valve, Stainless Steel Adapter
    Ralston Instruments QTHA-FRS0 5/16" -24UNF x Male Quick-test, no Check-valve, Stainless Steel Adapter
    Order # QTHA-FRS0 Mfg # QTHA-FRS0
    $52.06
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