Valve Positioners are offered in electro-pneumatic versions.

Press Release Summary:

Suited for chemical and food processing environments, YT series is built for valve automation applications and includes corrosion-proof stainless steel model. Explosion-proof model, YT 1000R, and enhanced process-protection models are also available. Supplied with aluminum diecast enclosures and stainless steel gauges, vibration-resistant EP series comes in rotary or linear configurations and accept analog 4-20 mA input signal. They are certified by NEMKO for ATEX and Eex md IIB T5.

Original Press Release:

TRIAC's New YT Series of Electro-Pneumatic Positioners

New line of valve positioners stands up to chemical and food processing applications for complete valve automation in harsh environments

YT series part of a comprehensive line of pneumatic and electro-pneumatic positioners, including auto-calibrating "smart positioners" with automatic DA and RA detection, and an explosion-proof, FM/CSA-approved model

TRIAC's new YT series of electro-pneumatic positioners is engineered for the harsh environments of chemical and food processing. The entire range is ruggedly built for high-performance valve automation applications, and includes corrosion-proof stainless steel and explosion-proof models. The YT 1000R explosion-proof electro-pneumatic positioner is available in both FM- and CSA-approved versions, designed to withstand and contain explosions inside the enclosure, preventing release of flames to the surrounding areas. Enhanced process-protection models lock down the system via a fail-freeze function in the event the 4-20mA input signal is lost.

For applications requiring greater cost economy, the EP line of electro-pneumatic positioners is available in rotary (EPR) or linear (EPL) configurations. EP series positioners accept an analog 4-20 mA input signal, and have rugged aluminum diecast enclosures and stainless steel gauges standard. These vibration-resistant positioners provide precise calibration with simple span and zero adjustments, are repeatable within ±0.5 percent F.S., and are certified by NEMKO for ATEX and Eex md IIB T5.

PP series pneumatic positioners utilize an input signal of 3-15 psi (0.2-1.0 kgf/cm2), capable of direct or reverse action with split range available. Like the electro-pneumatic line, TRIAC's pneumatic positioners are available in rotary (PPR) or linear (PPL) versions, and have various orifices available to increase or decrease flow as required.

Control accessories include single and dual lockup valves, filter regulators, flow and speed controls, and volume boosters. Details and specifications for the entire line of TRIAC positioners and accessories are available in a new product brochure, "Pneumatic & Electro-Pneumatic Positioners and Controls for Complete Valve Automation."

TRIAC is a division of AT Controls.

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