2 DURASTRIP bearings
All moving parts are protected by permanently lubricated, long lasting DURASTRIP bearings that extend the actuator's life in the most severe and demanding conditions.
3 LARGE INTERNAL AIR PASSAGES
Hytork's extra large internal air passages permit maximum speed of operation and greatly reduce the possibility of the air passages blocking.
4 VDI/VDE 3845 NAMUR ACCESSORY MOUNTING (an international standard)
This standard includes a slotted drive in the top of the pinion, providing a self centering, positive, no slop drive for top mounted accessories. All switches, positioners, etc. manufactured to the VDI/VDE standard, can be directly driven by the actuator pinion, eliminating expensive couplings, Hytork's standard visual position indicator, snaps on to this pinion design. This "standard" mounting pad simplifies the addition of all "state-of -the-art" top mounted accessories. Using Hytork's engineered "SAFEMOUNT", any accessory made to the VDI/VDE standard can be mounted to the actuator or one can still nipple mount a solenoid valve in the tapped hole. The choice is yours.
5 VERSATILE MODULAR DESIGN
Customized the Hytork actuator to fit your needs. Hytork's modular design permits shop or field changes in action (double acting or spring return), fail position, spring rating, manual overide requirements, plus testing and locking devices.
6 PINION SEALS
Pinion seals are positioned as close to the external surfaces as possible to minimise any crevices for maximum protection against corrosion
7 NAMUR SOLENOID MOUNTING PAD (an international standard)
This permits a choice of various manufacturers' solenoid valves to be direct mounted to the actuator. A single solenoid can be used for all double acting and spring return sixes. Hytork's "CATS" direct mounted solenoid valve prevents aggressive ambient air from entering the spring chambers. In addition to the NAMUR holes many sizes of the XL actuator range are also provided with four additional holes to assist attaching brackets for filter regulators and solenoid valves that cannot be direct mounted.
8 LIFETIME GUARANTEE ON SPRINGS
Put the Safe in Fail Safe! HYTORK's springs are designed and manufactured never to break, and are then protected from corrosion using an electrophoretic finish. Springs are rated to compensate for "spring set" for true fail safe confidence. Hytork springs are guaranteed for life and backed by a FREE complete actuator replacement. Hytork springs can be matched for any air supply pressure and valve requirement - easily and safely.
9 "CERAMIGARD"
The body has a uniquesurface finish of Di-aluminum Tri-oxide (AI203); a hard, corrosion resistant ceramic like surface, protecting all body parts against wear and corrosion.
10 SIMPLE, NO FRILLS CONCEPT
Only 3 moving parts -1 Pinion, 2 Pistons.
11 ISO 5211 VALVE MOUNTING PAD (an international standard) PLUS ADDITIONAL HOLES FOR CLOSE MOUNTING
Hytork XL actuators are all provided with ISO 5211 mounting holes. Many sizes have two ISO 5211 mounting hole patterns plus additional holes outside the ISO pattern. These two hole patterns provide flexibility in mounting to all types and makes of quarter turn valves, whether they are ISO 5211 or not. The outer mounting holes, coupled with HYTORK's optional, low cost mounting subplates, allow the close coupling of most makes of valves that are not ISO 5211.
12 RUGGED HEAVY DUTY CONSTRUCTION
The XL body designed as industrial grade and made from a heavy duty casting to provide maximum protection against dents, shock or fatigue.
13 LARGE RACK AND PINION FOR PRECISION MODULATING CONTROL APPLICATIONS
The extra large, precision rack and pinion reduces "dead band" for accurate modulating control applications.
14 CAST INDENTIFICATION
Model numbers, port identifications, ratings, foundry trace and safety instructions are cast in for permanent readability. No lost identification due to weathering or paint.
15 ADDED STANDARD CORROSION PROTECTION
A long heat cured, two part epoxy surface treatment is standard, providing extra protection against aggressive environments.
16 CORROSION RESISTANT COBALT ZINC PLATED PINION
All Hytork actuator pinions ar Cobalt Zinc plated. This durable treatment shows no signs of corrosion after over 2000 hours in a salt spray test.
17 STAR DRIVE PINIONS AND NEW STAINLESS STEEL ADAPTERS
All Hytork XL pinion drives are manufactured to ISO 5211. Hytork's new star drive provides additional flexibility and simplicity in valve / actuator mounting. Optional star drive sizes are available. A range of stainless steel pinion drive adapters aloows many valves to be close mounted for a compact, low cost package.
18 BI-DIRECTIONAL TRAVEL STOPS
A unique, exclusive standard provides rotaional adjustment on the actuator pinion, in both directions of travel.
