Create the pressure you need —
when you need it

No matter the pressure medium or range — Ralston Instruments has a hand pump for that

Hand Pump Pressure Source

Make Connections without a Tee

Connect to the pressure reference and to the device being calibrated without additional tees using the two pressure ports on Ralston hand pumps.

Reference Gauge Compatibility

Connect to standard digital or analog gauges using Ralston gauge adapters.

Calibration Convenience

Hand held calibration for remote or hard to reach processes.

Creating the pressure you need — for any application

Vacuum

-30 in Hg to 0
(-584 mmHg to 0)

Applications:

  • Vacuum gauge calibration

  • Vacuum switch testing

Pressure Media:

  • Air

Models:

Low Pressure

0 to 100 psi
(0 to 7 bar)

Applications:

  • Differential pressure transmitter calibration

  • Leak testing

Pressure Media:

  • Air

Models:

Medium Pressure

100 psi to 300 psi
(7 bar to 20 bar)

Applications:

  • Relief valve testing

  • Pressure gauge calibration

Pressure Media:

  • Air

Models:

High Pressure

300 psi to 5,000 psi
(20 bar to 350 bar)

Applications:

  • Pressure regulator adjustment

  • Safety relief valve testing

  • Hydrostatic testing

Pressure Media:

  • Hydraulic fluid

  • Water

Models:

Ralston Instruments Hand Pumps — Rugged Construction and Simple Convenience

Save time. Save money.

Fast and easy to operate, our pumps are engineered for the real world. It's simple to field test pressure transmitters, gauges or switches anywhere the job demands.

hand pump

Long Lasting

Replacement parts and kits for
all our hand pump models

Convenient

Simple design allows easy field maintenance with just a screw driver

Controllable

Soft seated bleed valves mean the pressure can be dropped very easily

Rugged

Durable construction
built to work in the field

Powerful

Lightweight, portable, handheld pressure up to 5,000 psi

Flexible

Two pressure ports means
no need for a tee

Precise

Make precise adjustments of pressure with the fine adjust vernier

Compatible

Each hand pump is compatible with all Quick-test™ hoses and adapters

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