Power Industry

For the last 14 years our site has been using QTRCO stainless steel actuators on approximately 32 valves of varying sizes up to 6” in a critical process which involves very high cycling operation.  Each of the valves cycle on/off approximately 2 million times per year.  Our preventative maintenance program stipulates we rebuild the valves and actuators every three years whether they need it or not.  It has been our experience the QTRCO actuators have held up extremely well in this demanding application and will wear better and outlast the valves, solenoids & switches, and other assembly components. 

Prior to introduction of QTRCO, Kevlar used different brands of rack & pinion pneumatic actuators all which of required extensive maintenance and frequent replacement to keep the washers on line.  Based on QTRCO’s demonstrated reliability and corrosion resistance in the application, Kevlar made QTRCO the preferred actuator standard for balance of the plant 12 years ago.

— 

Jerry Copley,
Reliability & Equipment Eng. Consultant


Compressor Bleed Valves

Compressor Bleed Valves
Customer requires high reliability and was experiencing issues with actuator stroke speeds and temperature limitations.
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Steam Turbine - Over Speed Trip Valve

Steam Turbine - Over Speed Trip Valve
Requires High Reliability, High Temp. and Fast Acting valve/ actuator closing speeds of 0.3 seconds or less to prevent turbines from over speeding.
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Fuel Gas Pilot - Over Speed Trip Valve

Fuel Gas Pilot - Over Speed Trip Valve
Customer requires High Reliability/ Repeatability and Fast Acting valve/ actuator closing speeds of 0.2 seconds or less to prevent turbines from over speeding.
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Inlet Guide Vane

Inlet Guide Vane
The inlet guide vane damper modulates position to vary air flow to the compressor. The large OEM prefers a linear pneumatic actuator for precise control, but spring and diaphragm models are large, expensive, and have a long lead-time.
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