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DelTorq Rack & Pinion Actuators
Features and Benefits

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7.  Top quality bearings and seals for low friction, high cycle life, to ensure trouble free operation.
8.  Internal and external stainless steel fasteners and specially coated springs provide corrosion resistance in a variety of environments and application
9.  The unique manufacturing technique of the shaft combines a high strength alloy steel shaft, having precision machined gear teeth with a square precision drive.  The guide bar in the piston provides an inherent blow out proof shaft design.
10.  Unique position indicator can be indexed to show alternate position. Top of actuator shaft has a Namur slot to drive all popular sensors and Positioners.

1. Two independent external travel stops permit easy and precise adjustment of +/- 5 in both directions. Adjustment screws do not penetrate the pressurized body and eliminates possible leakage.

11.  The design of the stop adjustment cam permits the actuator to be locked out in the full open or full closed position before performing mechanical maintenance work. A special loc out enclosure is also available as an option to prevent unwanted operation.
2. Modular pre-loaded spring cartridges for safe, efficient use of actuator. Convert a double acting actuator to a spring return actuator by simply removing the end caps and adding from 2-6 spring cartridges each side to accomplish the desired torque. Spring cartridges have corrosion resistant springs.
3.  Hard anodized extruded aluminum body with honed internal surface for strength and lower coefficient of friction. This ensures extended service life and low maintenance down-times.  The air passes are machined internally to avoid external tubing. The external shape is contoured and rounded to avoid buildup of contaminants. 12.  Standard end caps are rounded with no crevices to accumulate contamination or corrosive chemicals.  The external and internal surface is coated with an epoxy based powder to provide resistance to atmospheric corrosion and general resistance to mild chemicals.
4.  Compact modular design with same body and end caps for double acting and spring return design. Combined with an adapter sleeve design to offer the most efficient use of inventory.
5.  Dual rack and pinion design for compact construction, high cycle life, symmetrical mounting position, fast and efficient operation and offers both spring-to-open and spring-to-close option.  Reverse rotation can be accomplished in the field by simply inverting the pistons. 13. Manufactured in full compliance with the latest requirements of ISO 5211 and EN12116.  Provisions for mounting solenoid valves and accessories comply with Namur VDI/VDE3845.
6.  Wide actuator base design option can be adapted to mount to valve designs requiring wider than ISO 5211 drilling. This feature coupled with the unique shaft design can be customized to fit your specific requirements.
 

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