morin mrp pneumatic rack and pinion...

Features• Full bearing support on every moving

part for increased cycle life. Pinionbearings located at the top and bottomsupport the actuator-valve interface toresist sideloads from misalignment ofmounting brackets.

• Standard with ISO 5211 (DIN 3337)mounting, available with many otherinterfaces to suit the valve top worksgiving it the most flexible mounting inthe industry.

• Top accessory pad has both the Tycostandard and NAMUR mounting padallowing direct mounting of Tycoaccessories using ModMount or withthe male NAMUR shaft kit, allowingmounting of any NAMUR standardaccessories.

• Identical envelope dimensions forspring return and double actingmodels.

• Hard anodized body provides highwear resistance and long service life.Body and chromated end caps arethen Electrostatic Powder Coated asstandard, providing levels of corrosionprotection others offer only as optional.

• One-piece heat-treated steel pinionprovides the strength and corrosionresistance necessary for today’sdemanding actuation requirements.

• Dual travel stops standard to allowadjustment at both ends of the stroke.Standard open adjustment range of82° to 98° rotation, including an overtravel of +/-4° and an under travel of+/-4°.

• The NAMUR pattern directional controlvalve mounting pad allows all NAMURstandard valves to direct mount to theactuator.

General applications:• For pneumatic control of any quarter-

turn valve application.

Options:• Special Nickel Protection for difficult

services.

Technical dataMaximum supply pressure : 150 psig

Rated supply pressure : 120 psig

Output torque@120 psig : 13,523 lb. in.

Temperature range (F) : -20° to 210°

Optional temperature ranges available (F) : -15° to 300°

: -40° to 160°

Morin MRP Pneumatic Rack and Pinion ActuatorsDouble and Single Acting

Tyco reserves the right to change product design and specifications KVUDD-0128-EN-0106 without notice. Copyright © 2001 by Tyco International Ltd.

Total Flow Control Solutions

Double and Single Acting Pneumatic Quarter-turnActuators with Flexible Valve and Accessory Mounting

Primary User

File Name: Keystone_Actuator_MRP_spec_D402


Tyco reserves the right to change product design and specifications KVUDD-0128without notice. Copyright © 2001 by Tyco International Ltd. 2

Materials of Construction

Materials of ConstructionPart Material U.S. Material Std. DIN Material Std.

1 Body Extruded aluminum(hard anodized and ESPC*) ASTM B221 DIN 3.33206.51

2 Travel Stop 304 stainless steel ASTM A1933 Indicator ABS

Carbon steel4 Pinion Shaft

(sealbond – N coated) ASTM A108 C40

5 O-rings Nitrile6 Bearings Engineered polymer - Devlon™

Die-cast aluminum7 Piston LM6 or LM24 ASTM B85 DIN 1725-230 or 226

(anodized) 8 Springs

(spring return) Spring steel ASTM A877 BS 2803

Die-cast aluminum9 End Cap LM6 or LM24 ASTM B85 DIN 1725-230 or 226

(chromated and ESPC*) 10 Fasteners 304 stainless steel ASTM A193 DIN 267 Part 3

* ESPC – Electrostatic Powder Coat

Optional Special Nickel Protection (SNP)

For those harsh environments where even our tough, standard electrostatic powdercoating can be overcome, MRP offers the option of Special Nickel Protection. Used indifficult services including caustic wash downs in food and beverage operations, saltair environments in coastal regions, high humidity zones such as cooling towers, andmany others, this option provides some of the highest levels of protection obtainable inpneumatic rack and pinion actuators. The MRP with SNP is protected by the nickelprocess both inside and out, including the pinion, using a proprietary chemical process.

12 3

4

5

67

8

9

10



Operation

ISO/DIN Valves Shaft Adaptation

The Morin MRP Rack and Pinionactuator offers unsurpassed flexibility inmounting options. The design provides acommon sense approach to the multipleshaft designs allowed by ISO. The MRPaddresses the complexity of thisstandard with a standard of it’s own andoffers a comprehensive range ofadapters to suit many of the ISO“standard” shafts on the market today.This allows the MRP to be used ondiffering valve shaft designs in the sameplant without having the same sizeactuator models with different pinions.

Actuator Mounting pad of the MorinMRP: The dual-keyed input shaft allowsparallel or perpendicular mounting to thevalve flow and is designed to accept thedesired ISO adapter sleeve. Acomprehensive range of adaptersleeves is available to suit many valvestems.

ISO EN 12116 Square Adapter Sleeve

ISO EN 12116 Flat Head Adapter Sleeve

* 037 and larger ISO models havededicated Star drives.

Double and Single Acting Actuators

Both the double acting and spring return MRP actuators feature a compact design withthe same envelope dimensions. This flexible unit can be converted from double actingto single acting in the field without special charts to decipher color codes on whichsprings to use. The spring return actuator is available with spring sets from 40 poundsto 80 pounds in 10 pound increments. The springs are manufactured from heavygauge wire to assure long life and corrosion resistance.

Standard Double Acting

To OPEN Valve: In a double actingapplication, air pressure is introduced toPort B, pressurizing the space betweenthe pistons and driving the pistons outtowards the actuator ends. The volumeof air above the piston heads isexhausted to atmosphere. This causesthe piston racks to drive the pinion in acounterclockwise direction, resulting in aquarter-turn rotation. This rotation istransferred to the valve shaft, openingthe valve.

To CLOSE Valve: Air pressureintroduced to Port A, pressurizing thespaces above each piston head anddriving the pistons inward. The volumeof air between the pistons is exhaustedto atmosphere. This causes the pistonracks to drive the pinion in a clockwisedirection, resulting in a quarter-turnrotation. This rotation is transferred tothe valve shaft, closing the valve.

Spring Return

To OPEN Valve: In a single actingapplication, air pressure is introduced toPort B, pressurizing the space betweenthe pistons and driving the pistons outtowards the actuator ends while at thesame time compressing the springs.This causes the piston racks to drive thepinion in a counterclockwise direction,resulting in a quarter-turn rotation. Thisrotation is transferred to the valve shaft,opening the valve.

To CLOSE Valve: When the air pressureis relieved, the spring tension moves thepistons inward and exhausts the airthrough Port B. This causes the pistonracks to drive the pinion in a clockwisedirection, resulting in a quarter-turnrotation. This rotation is transferred tothe valve shaft, closing the valve.



Travel Adjustments

Within the mechanical connections of the drive between the valve and the MRP actuatorthere are several points of manufacturing tolerance, including valve disc or ball to stem,stem to adapter and adapter to actuator that must be compensated for in the operation ofthe assembly. Therefore, adjustment is necessary to ensure that valve operation is asprecise as required. With the MRP, Dual travel stops allow adjustment at both ends of thestroke. Maximum adjustment range of 82° to 98° rotation, including an over travel of +/-4°and an under travel of +/-4°.

The standard travel stops also providethe desired adjustment necessary forproper operation of various valve types,as detailed.

Resilient seated butterfly valves Shut-off occurs before the disc hasrotated a full 90° from the open position.Travel adjustment is therefore desirableto prevent over travel, which wouldresult in unnecessary operating torqueand premature deterioration of seat life.In the open position, adjustment isnecessary to ensure maximum flowthrough the valve and minimumdynamic forces acting on the disc.

High performance butterfly valvesThe double offset design of highperformance butterfly valves results inthe disc moving into the seat with acamming action. It is important that thedisc does not travel beyond the seatposition, otherwise damage to the seatwill occur.

Ball and Plug valves The ball or plug must be precisely in linewith the valve port to prevent damage tothe seat in the open position.Adjustment at the closed position isnecessary to ensure that complete shut-off is achieved. MRP actuators haveover travel adjustment of 4° +/- onedegree and under travel adjustment ofat least 4°, making them ideally suitedfor all quarter turn valve designs.

98°82°



Torque OutPut and Characteristics

Output Torques (lb. in.) Double Acting - Air to AirActuator Air Supply (psig)Model 40 50 60 70 80 90 100 110 120

004 204 260 315 370 425 481 536 591 646009 460 584 709 833 957 1082 1206 1330 1455014 674 856 1037 1221 1403 1585 1767 1949 2132025 1196 1519 1842 2166 2489 2812 3135 3458 3782037 1737 2206 2676 3145 3615 4084 4554 5023 5493045 2301 2922 3544 4166 4788 5409 6031 6653 7275070 3606 4581 5556 6531 7505 8480 9455 10429 11404088 4277 5432 6588 7774 8900 10056 11211 12367 13523

Output Torques (lb. in.) Single Acting - Spring ReturnActuator Air Supply (psig)Model 40 50 60 70 80

004 Break 114 150 183 217 250End 69 90 112 133 152

009 Break 267 340 418 495 570End 154 200 248 296 344

014 Break 382 490 602 710 820End 232 305 377 448 520

025 Break 710 912 1115 1316 1520End 385 505 625 748 686

037 Break 1018 1308 1598 1885 2175End 565 740 918 1095 1270

045 Break 1296 1670 2040 2410 2780End 775 1015 1255 1495 1735

070 Break 2020 2595 3175 3755 4330End 1235 1615 2000 2388 2765

088 Break 2470 3170 2875 4580 5285End 1455 1905 2355 2810 3260

Unbalanced air and spring torques available on Bulletin

Torque Characteristics

Ball, butterfly and plug valves also vary in the characteristics of their torque curves.

Ball and Plug Valves: A ball valve, having seats loaded onto the ball, experiences alevel of ‘break out’ torque on opening, followed by a relatively low ‘run’ torque, beforean increase as the ball reaches the closed position. The torque curve for standard plugvalves tends to be similar to that of ball valves, but with a higher ‘run’ torque.

Butterfly Valves: A butterfly valve has a steeper torque decline and a lower ‘run’, dueto its lack of contact with the seat. The effect of flow, however, produces dynamictorque increase as the disc moves towards the open position.

Service Factors: The torque required to drive a valve varies markedly with applicationconditions. A quoted valve torque will normally assume frequent operation on a clean,lubricating fluid, at ambient temperature. If the valve is to be used infrequently, is on adry application, on fluid with particulate content, at high or low temperature or is to beused for emergency shut-down service, for example, correction factors must be addedto the valve torque requirements. The valve manufacturer should be consulted to verifythe extent of such correction factors.

For example: (Valve Sizing Torque x K-Factor = New Valve Sizing Torque)

Typical correction factorsFrequent use, lubricating clean fluid K = 1.0Infrequent use (less than once per month) K = 1.5Emergency shut down (once per year) K = 2.0Dry gas K = 1.25Paste, resin, slurry, etc K = 1.5Fluids with abrasive particles K = 2.0

Double Acting models produce aconstant level of torque outputthroughout the piston travel.

With Spring Return models, energy isused to compress the springs on the airstroke and the output torqueconsequently reduces throughout thetravel. Conversely, on the spring stroke,the energy of the spring diminishes astravel progresses, similarly reducing theoutput torque. When sizing actuators itis important to take into account the ‘endof air’ and ‘end of spring’ torques.

Ball and Plug Valves

Butterfly Valves

100

80

60

40

20

0° 90°

100

80

60

40

20

0° 90°

120

10080

60

40

0

20

20 40 60 80 100

Torq

ue %

of m

axim

um

Angle of opening

120

10080

60

40

0

20

20 40 60 80 100

Torq

ue %

of m

axim

um

Angle of opening



Sizing Actuators

Sizing

Actuators must be sized to have a torque output equal to, or greater than, the requiredvalve torque, taking into account unseating, run travel and reseating, where applicable.

1. Determine anticipated valve torque: To select the most appropriate actuator sizefor any given valve, it is necessary to determine the anticipated operating torque forthat valve. This should be obtained by consultation with the valve manufacturer andby taking account of the particular circumstances of the application, as noted above.The valve manufacturer will often include a safety margin in such data, so as toallow for inevitable variances encountered during manufacture.

2. Determine air supply pressure: Determine the minimum air supply pressure,which will be available at the installation. Using this, or the nearest supply pressureshown on previous page, select the actuator as follows.

3. Double acting models: Using the chart on page 5, select the actuator which willprovide the nearest torque output above the anticipated torque of the valve (+ safetyfactor).

4. Spring return models: Determine the desired ‘failure mode’, then determine thecritical torque points for the subject valve using table. Using the chart on page 5,select the actuator which will provide the nearest torque output (both ‘start’ and ‘end of spring’) above the anticipated valve torque (+ safety factor).

Valve Type Required Failure Mode Critical Torque Points

Butterfly Valve ‘Fail Closed’ Start of air torqueEnd of spring torque

‘Fail Open’ Start of spring torqueEnd of air torque

Ball Valves ‘Fail Closed’ End of air (full open) torqueEnd of spring (reseating) torque

‘Fail Open’ End of spring (open) torqueEnd of air (reseating) torque

Mechanical DataPiston Double Acting Spring Return

Displacement (in3) Operating Times Operating TimesActuator Open-Double Acting Close (seconds) (seconds) WeightModel Air Stroke - Spring Return Double Acting Stroke Time Air Stroke Spring Stroke Lbs.

004 15.1 9.4 0.11 0.09 0.11 4.2009 31.9 21.2 0.23 0.20 0.23 7.5013 45.5 31.0 0.33 0.29 0.33 9.7025 78.5 55.5 0.56 0.51 0.56 16.3037 115.6 79.9 0.83 0.74 0.83 24.3045 156.1 105.8 1.12 0.98 1.12 25.3070 245.2 165.9 1.76 1.54 1.76 46.3088 292.5 196.7 2.09 1.83 2.49 65.0



Dimensions

Actuator Envelope Dimensions

Model A B C D E F G

004 6.46 3.68 4.08 3.03 3.03 2.96 0.63009 7.67 4.81 5.20 4.18 4.18 3.15 0.63014 8.11 5.44 5.83 4.59 4.59 3.15 0.63025 9.53 6.44 6.83 5.48 5.65 4.41 0.63037 11.23 7.27 7.66 6.00 6.44 4.57 0.63045 13.13 7.88 8.33 6.50 6.88 4.57 0.63070 15.51 9.06 9.45 7.73 8.07 5.00 0.63088 16.44 10.00 10.39 8.51 8.72 5.91 0.63

Actuator Mounting DimensionsModel Shaft Bore Keyway Mounting Pattern Mounting Holes ISO Square

H J Key Width ISO PCD Z

004 0.814 0.866 0.188 F05 1.97 4 x 1/4-20 UNC x 0.38 Dp 14 mm009 1.000 1.060 0.250 F07 2.76 4 x 5/16-18 UNC x 0.56 Dp. 17 mm014 1.000 1.060 0.250 F07 2.76 4 x 5/16-18 UNC x 0.56 Dp. 17 mm025 1.120 1.250 0.250 F10 4.02 4 x 3/8-16 UNC x 0.56 Dp. 19 mm037 see note 2 F10 4.02 4 x 3/8-16 UNC x 0.56 Dp. 22 mm045 see note 2 F10 4.02 4 x 3/8-16 UNC x 0.56 Dp. 22 mm070 see note 2 F12 4.92 4 x 1/2-13 UNC x 0.63 Dp. 27 mm088 see note 2 F12 4.92 4 x 1/2-13 UNC x 0.63 Dp. 27 mm

1. Mounting dimensions for the Tyco Direct Mount available on KVUDD-0134-0108-EN.

2. Models 037 through 088 will not have inserts. The drive shafts are machined with ISO star patterns.

ISO/NAMUR Options

Note: Adapter kit to provide NAMUR topmount accessory drive is available.Bracket not included.

Solenoid Valve Mounting Pad Top Mount Accessory Pad Dimensions Model Shaft Bore Keyway

H1 J1 Key Width

004 0.814 0.855 0.189 (3/16” Square Key)009 1.000 1.060 0.252 (1/4” x 3/16” Key)014 1.000 1.060 0.252 (1/4” x 3/16” Key)025 1.120 1.250 0.252 (1/4” x 1/4” Key)037 1.120 1.250 0.252 (1/4” x 1/4” Key)045 1.120 1.250 0.252 (1/4” x 1/4” Key)070 1.120 1.250 0.252 (1/4” x 1/4” Key)088 1.120 1.250 0.252 (1/4” x 1/4” Key)

B

A

F

TravelBolts

E

F

DG

C

J

Mounting Pattern

H

1.181.62

3.68

3.15

M5 x 0.30 Dp., 8 Holes

1/4 NPT x 0.45 Dp. #10UNF x 0.30 Dp.8 Holes

1.26

0.95

16.020.0

11.0 A/F

M6 x 12 Dp.4.0

4.0

Z

Tyco Valves & Controls has a complete range of control accessories available, for integration with the MRP actuators to achievecomplete process control, from simple on/off solenoid valve control to integrated Network systems.

Solenoid ValvesA comprehensive range of solenoid valves is available for controlling the pneumatic supply to theactuator by means of an electrical signal. Alternative specifications of solenoid valves include: Weatherproof to NEMA 4, 4XExplosion proof to NEMA 4, 7, 9Intrinsically safe to Class I A, B, C, D, Class II E, F G, Div. 1 and 2

AVID® Position MonitorsThe AVID range of Position Monitoring equipment offers models for all service classifications, each model incorporating numeroususer-friendly features, including HiVue® Local Visual Display, EasiFix® Switch Adjustment and ModMount® Assembly facilities.

AVID Analog PositionersThe AVID range of Control Positioners offers a variety of solutions to the precise positioning of rotary and linear pneumatic actuators.These positioners are suitable for use with either double acting and spring return actuators, and are mounted to the actuator housingeither directly with ModMount or NAMUR (VDI/VDE 3845) standards. These units also provide the simplest form of installation andcalibration as standard, without the requirement for additional equipment.

Network SolutionsUsing the extensive resources of the AVID product range, Tyco Valves & Controls is able toprovide actuated valve packages, capable of integration within field communicationsnetworks and interfacing with the major Network protocols currently in use throughoutprocess industries. The AVID range on PlantNet® Monitors facilitates communication with AS-Interface, DeviceNet and Profibus Network Protocols to enable complete systemintegration of all valve units. Other protocols available on request.



The data presented in this bulletin is for general information only. Manufacturer is not responsible for acceptability of these products in relation to system requirements. Patents andPatents Pending in U.S. and foreign countries. All rights reserves. Printed in U.S.A. Tyco reserves the right to change product design and specifications without notice. © Copyright 2001.

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