Ralston Instruments

Ralston Instruments (RI) engineers reliable equipment and systems for precise pressure calibration, and Since 1969, has continued its heritage as a family-owned company with an inventive spirit. This spirit led to the development of the industry’s first pneumatic and hydraulic hand pumps. Ralston also launched the first fully integrated system of RI hoses and adapters designed for low volume, high pressure connection to tested devices. Ralston delivers extreme precision during a range of industrial applications, with all products made in the USA .These products save businesses valuable time during critical pressure testing and maintenance. The company’s pressure sources are pinnacle products used for differential or static pressure calibrations. Transcat proudly distributes an outstanding selection of Ralston components for the calibration of pressure instruments.
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  1. Ralston Instruments QTHP-1KPSIG-D Hydraulic Hand Pump & 1KPSI Pressure Gauge
    Ralston Instruments QTHP-1KPSIG-D Hydraulc.Hand Pump,5K PSI/35mPa Digital Pressure Gauge,1KPSI
    Order #: QTHP-1KPSIG-D
    Mfg #: QTHP-1KPSIG-D
    Availability: Item ships in about Ships in 2-3 weeks
    Special Price $1,184.71 Regular Price $1,316.36
    Hydraulc.Hand Pump,5K PSI/35mPa Digital Pressure Gauge,1KPSI Learn More
  2. Ralston Instruments QTVC-EN-KIT1-6-3 ControlPak Pres Contlr,1/8MNPT, 1/4MNPT,1/4FNPT, 6&3ft hoses
    Ralston Instruments QTVC-EN-KIT1-6-3 ControlPak Press.Cntrlr.6ft/3ft Hses,1/8"NPTM,1/4"NPTM,1/4"NPT
    Order #: QTVC-EN-KIT1-6-3
    Mfg #: QTVC-EN-KIT1-6-3
    Availability: Item ships in about Ships in 4-6 weeks
    $2,957.32
    ControlPak Press.Cntrlr.6ft/3ft Hses,1/8"NPTM,1/4"NPTM,1/4"NPT Learn More
  3. Ralston Instruments QTVC-EN-0000-0-0 ControlPak Pres Contlr,no gauge adapt,hose, or process conn
    Ralston Instruments QTVC-EN-0000-0-0 ControlPak Press.Controller,No Gauge,Adapt.,Hose or Proc.Conn.
    Order #: QTVC-EN-0000-0-0
    Mfg #: QTVC-EN-0000-0-0
    Availability: Item ships in about Ships in 4-6 weeks
    $2,688.34
    ControlPak Press.Controller,No Gauge,Adapt.,Hose or Proc.Conn. Learn More
  4. Ralston Instruments QTHP-3KPSIG-D 5K PSI/35mPa Hydraulic Hand Pump,3K PSI Digital Gauge
    Ralston Instruments QTHP-3KPSIG-D 5K PSI/35mPa Hydraulic Hand Pump,3K PSI Digital Gauge
    Order #: QTHP-3KPSIG-D
    Mfg #: QTHP-3KPSIG-D
    Availability: In stock
    $1,208.90
    5K PSI/35mPa Hydraulic Hand Pump,3K PSI Digital Gauge Learn More
  5. Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test,No Check-Valve,Brass
    Ralston Instruments QTHA-MTB0-12MM 12mm Tube Fitting x Male Quick- Test,No Check-Valve,Brass
    Order #: QTHA-MTB0-12MM
    Mfg #: QTHA-MTB0-12MM
    Availability: In stock
    $70.20
    12mm Tube Fitting x Male Quick- Test,No Check-Valve,Brass Learn More
  6. Ralston Instruments QTHP-4FBA-RG Hydraulic Hand Pump,5kPSI/35MPa
    Ralston Instruments QTHP-4FBA-RG Hydraulic Hand Pump,5kPSI/35MPa
    Order #: QTHP-4FBA-RG
    Mfg #: QTHP-4FBA-RG
    Availability: In stock
    Special Price $695.26 Regular Price $709.45
    Hydraulic Hand Pump,5kPSI/35MPa Learn More
  7. Ralston Instruments QT2S-HOS-6FT Quick-test Hose,1 Brass hose 1 1/4 tube stube end 6' long
    Ralston Instruments QT2S-HOS-6FT Quick-test Hose,1 Brass hose 1 1/4 tube stube end 6' long
    Order #: QT2S-HOS-6FT
    Mfg #: QT2S-HOS-6FT
    Availability: Item ships in about Call for Availability
    Special Price $106.23 Regular Price $108.41
    Quick-test Hose,1 Brass hose 1 1/4 tube stube end 6' long Learn More
  8. Ralston Instruments LC10-TA12 Temperature Gauge, Probe, 1/4" diameter,12",bottom connection
    Ralston Instruments LC10-TA12 Temperature Gauge, Probe, 1/4" diameter,12",bottom connection
    Order #: LC10-TA12
    Mfg #: LC10-TA12
    Availability: Item ships in about 2-3 Weeks
    Special Price $567.56 Regular Price $579.15
    Temperature Gauge, Probe, 1/4" diameter,12",bottom connection Learn More
  9. Ralston Instruments NPAK-2FBA-6-3 for Rent Nitropak Nitrogen Pressure Source, 3K PSI, 1/4"NPT
    Ralston Instruments NPAK-2FBA-6-3 for Rent Nitropak Nitrogen Pressure Source, 3K PSI, 1/4"NPT
    Order #: NPAK-2FBA-6-3-RENT1
    Mfg #: $43002FBA-6-3-RENT1
    Availability: In stock
    Call for price
    Nitropak Nitrogen Pressure Source, 3K PSI, 1/4"NPT Learn More
  10. Ralston DCAP-PV-1MSA Vacuum Pressure Pump
    Ralston Instruments DCAP-PV-1MSA

    Vacuum Pressure Pump, 650PSI 1/8" Male NPT, S.S. 650

    Order #: DCAP-PV-1MSA
    Mfg #: DCAP-PV-1MSA
    Availability: Item ships in about 2-3 Weeks
    $823.46

    Vacuum Pressure Pump, 650PSI 1/8" Male NPT, S.S. 650

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  11. Ralston DCAP-PV-2MSA Vacuum Pressure Pump
    Ralston Instruments DCAP-PV Vacuum Pressure Pump,650PSI(4.5 mPa)28.5"HgVac,1/4"NPTM,3'Hose
    Order #: DCAP-PV-2MSA
    Mfg #: DCAP-PV-2MSA
    Availability: In stock
    $1,115.32
    Vacuum Pressure Pump,650PSI(4.5 mPa)28.5"HgVac,1/4"NPTM,3'Hose Learn More
  12. Ralston DCAP-PV-2FSA Vacuum Pressure Pump
    Ralston Instruments DCAP-PV-2FSA

    Vacuum Pressure Pump, 650PSI 1/4" Female NPT, S.S

    Order #: DCAP-PV-2FSA
    Mfg #: DCAP-PV-2FSA
    Availability: Item ships in about 2-3 Weeks
    $826.16

    Vacuum Pressure Pump, 650PSI 1/4" Female NPT, S.S

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  13. Ralston DCAP-PV-0000 Vacuum Pressure Pump
    Ralston Instruments DCAP-PV-0000

    Vacuum Pressure Pump, 650PSI No Gauge Connection

    Order #: DCAP-PV-0000
    Mfg #: DCAP-PV-0000
    Availability: In stock
    $786.26

    Vacuum Pressure Pump, 650PSI No Gauge Connection

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  14. Ralston LC10-GT2M Digital Pressure Gauge
    Ralston Instruments LC10-GT2M Digital Pressure Gauge 5000 psi/35 Mpa,1/4" Male NPT
    Order #: LC10-GT2M
    Mfg #: LC10-GT2M
    Availability: Item ships in about 2-3 Weeks
    $399.00
    Digital Pressure Gauge 5000 psi/35 Mpa,1/4" Male NPT Learn More
  15. Ralston LC10-GP2M Digital Pressure Gauge
    Ralston Instruments LC10-GP2M Pressure Gauge,1K PSI/70bar/ 7mPa,1/4"NPTM,Bottom
    Order #: LC10-GP2M
    Mfg #: LC10-GP2M
    Availability: In stock
    $538.65
    Pressure Gauge,1K PSI/70bar/ 7mPa,1/4"NPTM,Bottom Learn More
  16. Ralston LC10-GJ2M Digital Pressure Gauge
    Ralston Instruments LC10-GJ2M Digital Pressure Gauge 100 psi/700 kPa, 1/4" Male NPT
    Order #: LC10-GJ2M
    Mfg #: LC10-GJ2M
    Availability: Item ships in about 2-3 Weeks
    $379.00
    Digital Pressure Gauge 100 psi/700 kPa, 1/4" Male NPT Learn More
  17. Ralston LC10-GD2M Digital Pressure Gauge
    Ralston Instruments LC10-GD2M Digital Pressure Gauge 15 psi/200 kPa, 1/4" Male NPT
    Order #: LC10-GD2M
    Mfg #: LC10-GD2M
    Availability: Item ships in about 2-3 Weeks
    $379.00
    Digital Pressure Gauge 15 psi/200 kPa, 1/4" Male NPT Learn More
  18. Ralston LC10-GC2M Digital Pressure Gauge
    Ralston Instruments LC10-GC2M Digital Pressure Gauge 15 psi/200 kPa, 1/4" Male NPT
    Order #: LC10-GC2M
    Mfg #: LC10-GC2M
    Availability: Item ships in about 2-3 Weeks
    $379.00
    Digital Pressure Gauge 15 psi/200 kPa, 1/4" Male NPT Learn More
  19. Ralston XTHP-0000 10,000 psi Hydraulic Hand Pump
    Ralston Instruments XTHP-0000 10,000 psi Hydraulic Hand Pump No Gauge Connect
    Order #: XTHP-0000
    Mfg #: XTHP-0000
    Availability: Item ships in about Call for Availability
    $1,286.42
    10,000 psi Hydraulic Hand Pump No Gauge Connect Learn More
  20. Ralston XTHP-2MSA 10,000 psi Hydraulic Hand Pump
    Ralston Instruments XTHP-2MSA 10,000 psi Hydraulic Hand Pump 1/4" Male NPT, S.S.
    Order #: XTHP-2MSA
    Mfg #: XTHP-2MSA
    Availability: In stock
    Special Price $1,316.25 Regular Price $1,343.12
    10,000 psi Hydraulic Hand Pump 1/4" Male NPT, S.S. Learn More
  21. Ralston XTHP-2FSA 10,000 psi Hydraulic Hand Pump
    Ralston Instruments XTHP-2FSA 10,000 psi Hydraulic Hand Pump 1/4" Female NPT, S.S.
    Order #: XTHP-2FSA
    Mfg #: XTHP-2FSA
    Availability: In stock
    Special Price $1,321.41 Regular Price $1,328.54
    10,000 psi Hydraulic Hand Pump 1/4" Female NPT, S.S. Learn More
  22. Ralston XTHP-10KPSIG-FL 10,000 psi Hydraulic Hand Pump
    Ralston Instruments XTHP-10KPSIG-FL 10,000 psi Hydraulic Hand Pump 10000 PSI FieldLab
    Order #: XTHP-10KPSIG-FL
    Mfg #: XTHP-10KPSIG-FL
    Availability: Item ships in about 2-3 Weeks
    $2,951.90
    10,000 psi Hydraulic Hand Pump 10000 PSI FieldLab Learn More
  23. Ralston XTHP-10KPSIG-D 10,000 psi Hydraulic Hand Pump
    Ralston Instruments XTHP-10KPSIG-D 10,000 psi Hydraulic Hand Pump 10000 PSI Dig Gauge
    Order #: XTHP-10KPSIG-D
    Mfg #: XTHP-10KPSIG-D
    Availability: Item ships in about 2-3 Weeks
    $1,397.80
    10,000 psi Hydraulic Hand Pump 10000 PSI Dig Gauge Learn More
  24. Ralston XTHP-1MSA 10,000 psi Hydrualic Hand Pump
    Ralston Instruments XTHP-1MSA 10,000 psi Hydraulic Hand Pump 1/8" Male NPT, S.S.
    Order #: XTHP-1MSA
    Mfg #: XTHP-1MSA
    Availability: Item ships in about 2-3 Weeks
    $999.10
    10,000 psi Hydraulic Hand Pump 1/8" Male NPT, S.S. Learn More
  25. Ralston LC10-GV2M Digital Pressure Gauge
    Ralston Instruments LC10-GV2M Digital Pressure Gauge 10,000 psi/70 Mpa,1/4" Male NPT
    Order #: LC10-GV2M
    Mfg #: LC10-GV2M
    Availability: Item ships in about 2-3 Weeks
    $399.00
    Digital Pressure Gauge 10,000 psi/70 Mpa,1/4" Male NPT Learn More
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