July 2015 | Newsletter No Images? Click here
Volume Controllers

The Ralston Instruments Volume Controller is an excellent solution for a wide range of Pressure Control Applications.


Differential Pressure transmitter Calibration – Use the Volume Controller to hit pressure test points quickly and accurately. It can be used without nitrogen to control pressure for calibrating the differential pressure side of a pressure transmitter up to 400 inH2O / 1000 mbar. With compressed nitrogen applied it can be used to control pressure for calibrating the static side of a pressure transmitter to 3000 psi / 200 bar.

Analog pressure gauge calibration – When used in conjunction a digital test gauge and a 2 or 4 port benchtop manifold it can be used to calibrate 2 or 4 of the same range pressure gauges at the same time. This works much quicker and more efficiently than a deadweight tester for calibrating analog pressure gauges. This makes an excellent choice for a laboratory to calibrate pressure gauges in a wide range of pressures.

Vacuum pressure gauge or transmitter calibration – Connect the Volume Controller in line with a mechanical vacuum pump. Pull a vacuum on the inlet side of the Volume controller and control vacuum to precise test points better than with virtually any other device.

Float Pneumatic Piston Gauges – In high precision pressure calibration the Volume Controller can provide a precise pressure to float a piston gauge so that the piston gauge can deliver accurate pressure


1/4in Stainless Steel Tube Quick Connect (2G) Hoses

Great for connecting to Oxygen Analyzers or to any tube fitting that needs to be connected to repeatedly without worry about wearing it out.


Stainless Steel Quick-test XT Tees

Connect 3 Quick-test XT hoses together easily up to 10,000 psi / 700 bar



"Did you know that Ralston Hydraulic Pumps can be used as an oiler for grease fittings?"

Trade Shows

Ralston Takes to the Road

Check us out at one of our upcoming trade shows:


AGMSC 2015 - August 3-6 | Robert Morris College | Moon Twp PA, USA
SPE Offshore Europe 2015 - September 8-11 |  AECC | Aberdeen, Scotland, UK
ASGMT 2015 - September 22-25 | Marriott Westchase | Houston TX, USA


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