Ralston Instruments June 2014
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Ralston Hydraulic Hand Pumps

Watch: Medium Pressure Adapter
Calibrating with the Ralston Hydraulic Hand Pump

Get to know the last hydraulic hand pump you will ever need to buy. See how to efficiently and quickly set up and perform calibration tests on a range of devices with on-board gauges or off-board pressure calibrators. Watch how easy field testing is with this hand pump. Connect directly to a process connection using Quick-test hoses and use your own precision pressure reference. These hand pumps are precision manufactured in the USA to exacting specifications for use in the toughest environments.

  • Pressure up to 5,000 psi (350 bar)
  • Low volume Ralston Quick-test hose
  • Includes NPT or BSPP Ralston Quick-test Adapters
  • Complete calibration kits are available with analog or digital pressure gauges

Watch the Hydraulic Pump in Action

Tech Tip

Analog Pressure Gauges

Did you know that you can make calibrating analog pressure gauges easier by putting the gauge's pointer on the analog gauge on a cardinal point (hash mark) then read the pressure from the digital device – thus eliminating errors due to readability?

View All Analog Gauges

Tell Us Your Story and Receive a New iPad


iPad We're so excited to hear how Ralston Instruments products have helped you, that we're giving one lucky winner a brand new iPad to hear your unique story! Include photos of you using our products, your name, company name and your story.

Tell us your story

Featured Products

Ralston Takes to the Road

Trade Show

Check us out at one of our upcoming tradeshows:

NCSL 2014
July 28 - 31
Orlando, FL
Disney World | Stand 232

AGMSC 2014
August 5 - 8
Moon Township, PA
Robert Morris College | Stand 116

ASGMT 2014
September 9 - 11
Houston, TX
Marriott Westchase | Stand 60