Pressure Calibration Products

Quick-test Adapters, Valves & Fittings

Full range of connection adapters, fittings, tees, elbows and unions across all standard connections such as NPT, BSPP, Pete's Plug, 37° Flare, Tube Fitting, Medium Pressure, Metric and Minimess types.

Ralston Quick-test™ Microbore Hoses

The Ralston Quick-test™ hose is unique because it can be attached and detached without a wrench or thread sealant while maintaining a working pressure of 6900 psi (475 bar). Quick-test™ hoses are small in diameter, flexible and low in volume. These hoses provide an ideal way of transmitting pressure during a vacuum or pressure calibration. A wide variety of adaptors provide a connection for most calibration applications.

FieldLab Digital Pressure Calibrators & Digital Pressure Gauges

Calibration tests are only as good as the pressure reference. When your pressure calibrator helps you complete work and follow standard operating procedures, it does even more than provide accuracy. Intrinsically safe with 0.1% of reading accuracy, the Ralston FieldLab Digital Pressure Calibrator is a digital pressure calibrator that works the way you do.

Pressure and Vacuum Calibration Test Pumps

Ralston Instruments' Test Pumps are rugged and portable. Field tested calibration solutions with standard Quick-test adapters which make connecting to pressure references and the device being calibrated a snap.

Compressed Gas & Benchtop Calibration

Perform both ultra-precise low pressure differential or high pressure static pressure calibrations with nitrogen using the same device.

Gas Sampling Pump

The SP0V gas sampling pump can pull low pressure gas from a well and boost it to 25 psi to pump it into a sample cylinder.

Benchtop Calibration Tools & Accessories