Pneumatic Pressure/Vacuum Hand Pumps

Generate vacuum or a pressure for calibrating low pressure or vacuum instrumentation using an external pressure calibrator

Ralston Info & Links

Ralston Instruments
P.O. Box 340
Novelty, Ohio 44072
United States

Generate vacuum or a pressure for calibrating low pressure or vacuum instrumentation using an external pressure calibrator

Generate either 125 psi (8.6 bar) pressure or 23 InHg (584 mm Hg) vacuum with the same pump
Unique design allows the user to convert from pressure to vacuum by simply twisting a knob, even with gloves on
Two outlet ports allow connection to reference pressure gauge or pressure calibrator as well as device under test, thus eliminating a tee
Large volume fine adjustment piston provides precise control, even at very low pressures
Precisely vent pressure with soft seated bleed valve
Made in U.S.A.

Ralston Pneumatic Cylinder Hand Pumps come in a variety of different configurations. Choose which bundle is right for your application.

We’ll help you find the right solution for your application, whether you’re working in the field or a lab.

We’ll help you find the right solution for your application, whether you’re working in the field or a lab.