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.

 

247 Results
sort Sort
  • 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
    $64.26
  • Ralston Instruments QTFT-2MB0-RS G 1/4" male BSPP (ISO 228/1) x male QT Adapter
    Ralston Instruments QTFT-2MB0-RS G 1/4" male BSPP (ISO 228/1) x male QT Adapter
    Order # QTFT-2MB0-RS Mfg # QTFT-2MB0-RS
    $50.39
  • Ralston Instruments QTHA-MFB0-1620 Male QT x Mini-Stainless Steel, 1620 female, Brass Adapter
    Ralston Instruments QTHA-MFB0-1620 Male QT x Mini-Stainless Steel, 1620 female, Brass Adapter
    Order # QTHA-MFB0-1620 Mfg # QTHA-MFB0-1620
    $66.33
  • 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
  • Rent from the Test and Measurement Equipment Experts

    • check Dedicated rental experts are ready to help you find the right piece of equipment and determine the best course for rental
    • check Transcat provides consultative services on equipment selection, given your existing systems and operations
    • check Ready to use calibrated equipment is is provided quickly in a cost effective and flexible way
    • check Same day shipping is available in most cases
  • Ralston Instruments QTFT-3MS1
    Ralston Instruments QTFT-3MS1 3/8" male NPTxmale quick-test, with check valve, cap and chain, Stainless Steel Adapter
    Order # QTFT-3MS1 Mfg # QTFT-3MS1
    $79.86
  • 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-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-2FSO-MP
    Ralston Instruments QTHA-2FSO-MP 1/4" Female Medium Pressure (CPF 7/16-20) x Male QT Adapter, Stainless Steel
    Order # QTHA-2FSO-MP Mfg # QTHA-2FS0-MP
    $60.55
  • Ralston Instruments QTHA-HTBB-2T 1/4" tube fitting x male Quick-test bulkhead union, Brass
    Ralston Instruments QTHA-HTBB-2T 1/4" tube fitting x male Quick-test bulkhead union, Brass
    Order # QTHA-HTBB-2T Mfg # QTHA-HTBB-2T
    $60.92
  • Ralston XTFT-FRS0 Male Quick-test XT with Cap and Chain
    Ralston Instruments XTFT-FRS0 Male Quick-test XT with Cap and Chain, 0-10000psi, Stainless Steel adapter
    Order # XTFT-FRS0 Mfg # XTFT-FRS0
    $125.95
  • Ralston Instruments QTFT-4MS1 1/2" male NPT x male Quick-test with check-valve Adapter
    Ralston Instruments QTFT-4MS1 1/2" male NPT x male Quick-test with check-valve Adapter
    Order # QTFT-4MS1 Mfg # QTFT-4MS1
    $84.10
  • Ralston Instruments XTFT-HHSB Male Quick-test XT x Male Quick test XT Bulkhead, Cap & Chain Stainless Steel Adapter
    Ralston Instruments XTFT-HHSB Male Quick-test XT x Male Quick test XT Bulkhead, Cap & Chain Stainless Steel Adapter
    Order # XTFT-HHSB Mfg # XTFT-HHSB
    $127.79
  • 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
  • Ralston Instruments QTHA-2MB1-RT 1/4" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Ralston Instruments QTHA-2MB1-RT 1/4" male BSPT (ISO 7/1) x male QT, with check-valve, Brass Adapter
    Order # QTHA-2MB1-RT Mfg # QTHA-2MB1-RT
    $27.57
  • Ralston Instruments XTHA-1FS0 1/8" female NPT x male Quick-test XT 10KPSI Adapter
    Ralston Instruments XTHA-1FS0 1/8" female NPT x male Quick-test XT 10KPSI Adapter
    Order # XTHA-1FS0 Mfg # XTHA-1FS0
    $72.85
  • Ralston Instruments QTHA-5FSF-QD 5/8" female 37 degree flare (AN/JIC -10) x male Quick-test adapter, S.S
    Ralston Instruments QTHA-5FSF-QD 5/8" Female 37 Degree Flare x Male Quick-test Adapter, Stainless Steel adapter
    Order # QTHA-5FSF-QD Mfg # QTHA-5FSF-QD
    $157.68
  • 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
    $154.16
  • 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
    $78.66
  • Ralston Instruments QTHA-4FSF-QD
    Ralston Instruments QTHA-4FSF-QD 1/2" female 37 degree flare x male Quick-test, Stainless Steel adapter
    Order # QTHA-4FSF-QD Mfg # QTHA-4FSF-QD
    $162.87
  • Ralston Instruments XTHA-2MSA-MP Medium Pressure x Female Quick- test XT Adapter, Stainless Steel Adapter
    Ralston Instruments XTHA-2MSA-MP Medium Pressure x Female Quick- test XT Adapter, Stainless Steel Adapter
    Order # XTHA-2MSA-MP Mfg # XTHA-2MSA-MP
    $85.16
  • 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
  • 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-HFCB-2F Tee-male QT run x female QT run x 1/4" female NPT branch, Brass
    Ralston Instruments QTHA-HFCB-2F Tee-male QT run x female QT run x 1/4" female NPT branch, Brass
    Order # QTHA-HFCB-2F Mfg # QTHA-HFCB-2F
    $89.64
  • Ralston Instruments XTHA-HNS0
    Ralston Instruments XTHA-HNS0 DP Transmitter Adapter, 1/4" -28 UNF x male Quick-test Adapter
    Order # XTHA-HNS0 Mfg # XTHA-HNS0
    $79.89
  • 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
    $20.58
arrow_drop_down arrow_drop_down