Features and Benefits• Ductile iron housing, piston and end
caps provide long product life withdurable, cost effective operation.
• Output shaft made of high strength alloysteel transmits torque without fatigue.
• Sintered bronze bushings or Teflon®
composite on output shaft eliminateside loading of valve stem to maximizestem packing performance.
• Chrome-plated steel piston rod providesstrength and corrosion resistance forenduring high cycle applications.
• Sintered bronze piston rod bushingsprovide low-friction support and precisealignment of the piston rod to increaseefficiency, reduce maintenance andextend actuator life.
• Heat-treated stainless steel thrust pinand rollers transfer piston force to 17-4PH stainless steel yoke by rolling toreduce friction, for longer life and moreefficient torque transmission.
• Teflon® guide bands ensure low-frictionpiston guidance during operation toprotect cylinder walls from potentialscoring and extend seal performancewith a continuous cylinder wipingaction.
• ISO 5211 mounting pattern promoteseasier valve adaptation by utilizinginternationally recognized standards.
• Both Series B and C have beencertified to SIL 3 ratings.
• Namur drive slot on output shaftenables accessory-driven componentsto maintain a compact assembly andeliminates the need for couplings.
• Tectyl-coated springs can be disarmedwithout special tools to safely and easilydisassemble the actuator in the field,reducing down time and providing a‘man safe’ spring.
• Easily removable housing coverprovides effortless access for internalinspection of yoke mechanism.
Technical DataSupply pressure : 40 to 160 psig
(see torque charts)
Supply medium : Air or any gascompatible withmaterials ofconstruction
Temperature rating
Standard range : -20°F to 210°FOptional range : -65°F to 300°FAngular rotation : 90 degrees
Ductile Iron/Stainless Steel CylindersQuarter-turn Spring Return and Double Acting ActuatorsOutput Torques to 238,000 lb.in.
Teflon® and Viton® are registered trademarks of E.I. duPont de Nemours & Company
Morin is either a trademark or registered trademark of Tyco International Services AG or its affiliates inthe United States and/or other countries. All other brand names, product names, or trademarks belong totheir respective holders.
Principles of ConstructionUsing high quality materials ofconstruction and modern rugged designconcepts Morin becomes the standardfor low cost valve actuation whileproviding high quality performance.
The B, C, and HP actuator housings areall machined from ductile iron castings.This produces a rugged, low costproduct through reduced machining timeand by eliminating wasteful excessmaterial.
Any components that rotate or slideduring operation, such as the highstrength output shaft, chrome-platedpiston rod, stainless steel thrust pin orthe ductile iron piston, are all supportedby replaceable friction reducing bearings.
Bi-directional Travel StopsAdjustable stops on each end capprovide the flexibility of accurate valverotation positioning at the end of the‘open’ and ‘close’ stroke. Both stops arelocated on the cylinder centerline, theoptimal position to maximize traveladjustment and eliminate any detrimental side loading on the travelstops. Adjustable from 82° to 98°.
Morin Stainless Steel YokeThe heart of any scotch yoke actuator is the yoke. Morin uses 17-4PHstainless for this critical area as standard.
The yoke is the mechanism used to convert linear force to torque.This area is most often where the life of the actuator is controlled.
Morin has a Heart of Stainless Steel
Scotch Yoke Torque Characteristics
Single Acting Spring Return Double Acting Air to Air
AirBreak
SpringBreak
SpringEnd
AirEnd
Break Torque
Stroke
AirStroke
RunningTorque
SpringStroke
125
100
75
50
25
0°45°
90°
125
100
75
50
25
0°45°
90°
Torq
ue
Stroke
Torq
ue
Spring Designed for SafetyAll spring return models incorporate a‘man safe’ spring design that allows theactuator to be safely assembled anddisassembled in the field without theneed for special tools. The integral tierods are bored and tapped to provide ameans of loading and unloading thespring in a safe and convenientmanner.
SymmetricSymmetrical Yoke design offers thestandard torque curve seen most oftenin relation to scotch yoke actuators. Itoffers the increased torque advantage atboth ends of the 90° stroke as shown onthe blue curve below. This torque curvecovers most quarter-turn applications.
CantedCanted Yoke design moves the torquecurve to where it's needed most, gainingas much as 35% more break and reseattorque for the same size actuator. Thecanted yoke curve is shown in redbelow. Caned Yoke actuators allowselection of smaller, lighter, and lessexpensive actuator packages.
Symmetrical and Canted Yokes
It's about fitting the torque curve of the actuator to the valve . . .
Partial Stroke Test Device(PSTD)Provides a method of testingESD packages without shutdown.
LockoutIntegral lockout allows safeshutdowns for maintenance andisolation of systems.
Jackscrew Override (JSO)Manual operation when power islost. Simple and effective.
Hydraulic Override (MHP)Manual operation when power islost. Includes speed controls.
Options
AWWATested per American WaterworksAssociation C504. Available forpneumatic or water serviceoperation.
Direct Mounting CastAdaptersMany valve top works covered,including some ISO mounting.Assures economic but correctmounting alignment.
Full Stroke AdjusterProvides mechanical control ofmaximum and/or minimum valvestroke.
Epoxy Painting (EX)Offshore rated, three-part coatingsystem for high level ofenvironmental protection.
Proximity SwitchPreparationAllows installation of cartridgestyle proximity switches. Leavestop works open for mounting ofother devices.
High or Low TemperatureRatingsStandard rating of -20°F to 210°F[-29°C to 99°C] covers mostapplications. Optional ratingsdown to -65°F [-54°C] and up to300°F [149°C].
To provide the actuation package best suited for your application, the Morin line offers a full range of manual accessories.
+ °F/°C–
Optional Certification for CEManufactured in accordance withthe Pressure Equipment Directive97/23/EC and ATEX 94/9/EC.
Cubic inches shown in chart represent actualfree air volume in cylinder between piston andend cap when furthest apart. Air consumptionwill vary depending on supply pressure. Todetermine standard cubic feet per minute usethe following formula:
SCFM =
(Vol. in3)(Supply Air psig + 14.7)(Strokes/Minute)_____ ______________1728 14.7
Example: Calculate SCFM for Model 023double acting using 80 psig air supply and 5 strokes/minute.
2. Cycle times shown represent average time tostroke 90 degrees using standard pilot valvesand should be used as a guide only. Cycletimes can be increased or decreaseddramatically by using speed controls,oversized pilot valves or quick exhaust valves.
How to Order
1. Double Acting (Symmetrical Yoke) example:Air supply: 80 psigBreak/end torque: 23,100 lb.in.B-210U-D000B: Series210: Model numberU: UNC mounting threadsD: Double acting000: No spring
2. Spring Return (Symmetrical Yoke) example:Air supply: 80 psigEnd torque: 8085 lb.in.B-210U-S080B: Series210: Model numberU: UNC mounting threadsS: Spring return080: Spring set code
3. Double Acting (Canted Yoke) example:Air supply: 80 psigBreak (CCW) torque: 31,185 lb.in.End (CW) torque: 30,030 lb.in.B-210UC-D000B: Series210: Model numberU: UNC mounting threadsC: Canted YokeD: Double acting000: No spring
4. For all spring return models:• Use required torque to determine Spring
Set Code.
• All spring sets ending with ‘0’ fail clockwise(40, 50, 60, etc.).
• All spring sets ending with ‘1’ failcounterclockwise (41, 51, 61, etc.).
• All symmetrical yoke models between 006and 100 may be mounted to fail clockwiseor counterclockwise by “flipping” along thelongitudinal axis.
Actuator Standard End Torque Number Cylinder Volume1 Cycle Time2
Model Closing @ 80 psig of Bore Stroke Cubic In Seconds WeightSymmetrical Canted Pistons (inch) (inch) 95° Stroke 90° Stroke (lbs.)
Tyco Flow Control (TFC) provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This data sheet is intended only as a guide to TFC products and ser-vices. Individuals using this data sheet must exercise their independent judgment in evaluating product selection and determining product appropriateness for their particular purpose and system requirements. TFCMAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULARPURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT(S) TO WHICH THE INFORMATION REFERS. ACCORDINGLY, TFC WILL NOT BE RESPONSIBLE FOR DAM-AGES (OF ANY KIND OR NATURE, INCLUDING INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES) RESULTING FROM THE USE OF OR RELIANCE UPON THIS INFORMATION.Patents and Patents Pending in the U.S. and foreign countries. Tyco reserves the right to change product designs and specifications without notice.
Facility Phone: 205-663-0533
Also Available
Setting an unrivaled standard inactuation at a price unexpectedly low forstainless steel.
• To 160 psig pressure rating
• Double acting break torques to238,000 lb.in.
• Spring end torques to 104,125 lb.in.
For additional information, refer toPublication MORMC-0024.
High pressure actuation with stainlesssteel cylinders for superior corrosionresistance.
• 1500 psig pressure rating
• Double acting torques to 238,000 lb.in.
• Spring end torques to 104,125 lb.in.
For additional information, refer toPublication MORMC-0072.
