CVS Rack and Pinion Pneumatic Actuator Product Manual INTRODUCTION These instructions apply specifically to the CVS Rack and Pinion pneumatic actuator. This manual provides maintenance, operation, installation, and parts ordering information. These actuators may be equipped with valve bodies, ball valves and accessories. Please refer to the appropriate instruction manuals. The CVS Rack and Pinion Actuator has been designed, developed and tested utilizing the latest technology, and materials. This design is a rugged, reliable, high quality performer. The materials used allow for excellent corrosion protection and is NACE compliant. This design matches up to the latest global specifications; Full conformance to the latest specifications: ISO 5211, DIN 3337 and VDI/VDE 3845 NAMUR for product interchangeability and easy mounting of solenoids, limit switches and other accessories.
CONSTRUCTION The CVS Rack and Pinion Pneumatic Actuator is constructed of an extruded aluminum body, with both internal and external corrosion protection. This design utilizes a dual piston rack and pinion for compact construction, symmetrical mounting, high cycle life, and fast operation. Reverse rotation can be accomplished in the field by simply inverting the pistons. Two independent external travel stop adjustments permit an easy and precise adjustment of +/-4° in both the open and closed positions for accurate valve alignment. Universal and anti-blowout patented drive shaft with easy conversion from parallel to diagonal square and vice versa. This feature permits a lower and more flexible stock. CVS Controls Ltd. Process Management And Instrumentation
A compact design with identical body and end caps for double acting and spring return models. This reduces inventory and allows for field conversion, by adding or removing the modular spring cartridge. These units come furnished with a multi-function position indicator with NAMUR slot. This slot aids as a visual indicator, allowing for easy installation, accommodates all accessories, and the most popular sensors. Multiple bearings with guides on racks and pistons for precise operation, low friction, and high cycle life. Modular preloaded spring cartridge design with coated springs for simple versatile range, greater safety and corrosion resistance. Fully machined teeth on piston rack and pinion allows for minimum backlash and pinion engagement for maximum efficiency. Electroless nickel plated blowout resistant bearing guided one-piece pinion for improved safety and maximum cycle life. High quality bearings and seals were selected for low friction, high cycle life and a wide operating temperature range. Internal and external stainless steel fasteners provide long term corrosion resistance.
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