Innovative 3-Position Pendulum Valve provides accurate, repeatable pressure control

Innovative 3-Position Pendulum Valve provides accurate, repeatable pressure control
Traditional 3-position valves accomplish vacuum isolation and rough pressure control via an adjustable air cylinder. Unfortunately, the single, mid-open set point is neither accurate nor repeatable. Nor-Cal Products’ 3-position throttling pendulum valve uses the patented Intellisys™ closed loop control technology to provide much better set-point accuracy and repeatability, anywhere from 0.1 to 99.9% of stroke. Simple TTL inputs are used to trigger the controller and valve to go open, closed or to the third position – much in the same manner a 3-position air cylinder would be commanded using solenoid pilot valves. Alternatively, an RS-232 communications link is available for remote control and set-up to users who prefer this method of interface over the manual local mode.

IntellisysTM components fulfill downstream pressure control system with high-performance, closed-loop motor control throttling butterfly, pendulum, and gate valves, controllers and pressure gauges. Reduce time to pressure setpoint and increase tool throughput with over 100,000 control resolution steps and a 20x speed increase. Choose from stand-alone buried box or on-valve DSP-powered adaptive pressure controllers compatible with many available host communications interfaces such as DeviceNet, Ethernet, EtherCAT, RS-232, RS-485, and Analog/TTL. A Universal Valve Drive, a motor drive product, can be tailored to fit most other manufacturers’ valves to greatly improve their pressure control performance at a reduced cost. Capacitance diaphragm gauges feature an ultra-stable ceramic diaphragm, advanced digital circuitry in all unheated and heated models, and are available in common ranges. Popular fittings and connectors are offered.

We'd appreciate the opportunity to discuss how IntellisysTM Pressure Control components can improve the performance of your applications.  Send RFQs, models, and prints to  You may also contact us at 1-800-824-4166. 

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