Made in the USA — The Ralston Way

When precise, reliable pressure calibration is essential, trust Ralston Instruments. For over 40 years, we've engineered pressure calibration equipment and systems for a wide range of applications, saving time and taking the guesswork out of critical pressure testing, maintenance and repair operations.

Ralston Instruments' new Green Headquarters in Newbury, Ohio U.S.A.

About Ralston Instruments

Founded in 1969 by Doug Ralston, today Ralston Instruments continues to be a family owned company with a proud history of innovation. Responding to the demand for convenient, accurate ways to calibrate pressure instruments in industries around the globe, Ralston invented the first hand held pneumatic pump in 1969, followed by the development of the first hydraulic hand pump in 1970.

That passion for advancing pressure calibration components remains undiminished. In 1993, RI launched the first fully integrated system of Quick-test™ hoses and adapters. Designed for low volume, high pressure connections to virtually any device being tested, this unique design offers secure, time-saving connections without using a wrench or thread sealant. Ralston's integrated calibration pressure sources are the ultimate solution for performing differential or static pressure calibrations using nitrogen or compressed gas.

All Ralston products are made in the USA using superior design and manufacturing techniques. These products include hand pumpscompressed gas control deviceshosesadapters, and complete calibration kits.

When the job requires hand pumps that deliver pressure, hoses and adapters for fast, fail-safe connections, or precision calibration tools, Ralston Instruments provides the most complete pressure calibration solutions whether in the laboratory or in a remote location.

Ralston Milestones

2017

DCAP 650 PSI Pneumatic Hand Pump Introduced

2016

Ralston FieldLab introduced

2015

XREG Pressure regulator released

2014

Ralston Instruments awarded ISO 9001:2008 certification

2009

10,000 psi hose and adapters

2008

Male NPT Quick Disconnect

Ralston Instruments' new Green Headquarters in Newbury, Ohio U.S.A.

2006

Volume Controller

2003

Nitropak Introduced 

2001

Pressure/Vacuum Hand Pump

1993

First complete system of Quick-test™ hoses

1987

First Calibration Manifold

1970

First Hydraulic Hand Pump

1969

First Pneumatic Hand Pump

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