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Cordis Proportional Pressure Controls

Precise, linear digital pressure control within a closed-loop system with ultra high resolution and repeatability.

All Stainless Steel Air Cylinders

Designed for use in a broad range of applications including those in washdown and caustic environments, these quality cylinders are constructed of durable 303 and 304 stainless steel. They include a Nitrile rod wiper to keep potential contaminants from penetrating inside the cylinder, and are available with bore sizes from 3/4" to 2". Standard stroke lengths are from 1" up to 32" on some models.

Digital vs. Analog Control in Proportional Applications

Pressure regulators are closed-loop mechanical devices that maintain a pressure setpoint in various processes within a system. They are available in mechanical or electronic versions, in digital or analog models. Although analog devices have long been the traditional choice, digital proportional control provides significant advantages for many applications.

Cordis Pressure Controls FAQ

Is the output pressure of the Cordis linear?

A: Yes, within +/- .05% BFSL of

How can I electronically control the Cordis?

Resolution in Proportional Control

Proportionally controlling the pressure or flow of gasses and fluids to perform various functions is prevalent in laboratories and manufacturing environments. Often, it is imperative to use products that provide the best resolution. But what is resolution, what does it indicate in proportional control, and what might it mean for your application?

Pressure Control vs. Flow Control


Pneumatic fluid power is a universal and cost-effective method for delivering energy to instrumentation and industrial processes. In cooling applications, fluid flows past something to carry away heat. In an analytical instrument, the velocity of a carrier gas may be a critical timing mechanism. Gas pressure can mitigate sleep apnea. In each of these cases, fluid is controlled to achieve a particular outcome. The power delivered to these processes requires pressure control or flow control. 

When It Really Matters, How Can You Trust That a Valve Is Reliable?


Every device is designed for a particular need; therefore, product life is relative to the application. It stands to reason then that if an application only requires million cycles, that application does not require a billion cycle valve. Or does it?