Morin Actuator-79S 79B 79C HP

Supply medium: Any pneumatic or hydraulic fluid compatible with materials of constructionTemperature rating: Standard Range: -20°F to 210°F

Optional Range: -65°F to 300°FAngular rotation: 90 degrees ± 8 degrees

79S,79B& 79C:40-160psigHP: 400-1500psig

Supply pressure:Technical Data

INTRODUCTIONGeneral ApplicationMorin Actuators are designed for "en-off" or modulating control of any quarter-turn ball, butterfly,rotary plug or damper style valve application.

OPERATIONand

MAINTENANCE INSTRUCTIONSfor

Models 79S, 79B, 79C & HP

110 COMMERCE ORIVEVALLEYCOMMERCIAL CENTERPELHAM,AL 35124PHONE 205-663-0533FAX 205 663-0703

FlowControl

Bulletin 799 DtqCD

2. jackscrew OverrideThe jackscrew option is intended for infrequent or emergency on-site operation of the automated valve.

Note: ]ackscrew Override not available on HP.A. Jackscrew Operating Instructions:

1. Disengage power supply and vent air from the actuator.2. Operate the handwheel to drive the actuator into the desired position. Valve position can be

verified by checking the actuator position indicator.For Models 023-270, the jackscrew must be returned to the fully retracted position before theactuator can resume normal operation. Back the jackscrew out until it stops. Air willleak from thejackscrew unless it has been fully retracted against its internal seal.

B. Actuator Stroke Adjustment: (The jackscrew has a built-in actuator stroke adjustment)Models 023-270 (see FIGURE 2)1. Retract the jackscrew override completely by rotating counterclockwise.2. Loosen the lock nut and turn the brass adjusting screw to the desired position. The handwheel will

rotate with the adjusting screw. Never make stroke adjustments by turning the handwheel only.3. Tighten lock nut. ..Models 370, 740 & 575 (see FIGURE 3)1. Retract the jackscrew override completely by rotating clockwise.2. Loosen the stroke adjusting screw and lock nut.3. Using the handwheel, turn the jackscrew to adjust the actuator to the desired position.4. Screw the adjusting screw until it stops and tighten the lock nut.

FIGURE 1

EXHAUST

SUPPLYSUPPLY

DOUBLE ACTING ACTUATORTWO CYLlNDERS WITH JUMPERS

SINGLE ACTING ACTUATORTWO CYLlNDERS WITH JUMPER

79S, 79B & 79C

Actuator is factory lubricated and does .llQ1 require periodic lubrication while in service. Actuator can bemounted parallel or perpendicular to pipeline. Actuator can be installed in any convenient positionincluding vertical, horizontal or upside down.A. Bolt mounting bracket to actuator hand tight. DO NOT tighten yet.B. Install coupling on valve. Be sure rotary stops on valve are removed or adjusted to allow actuator

stops to do the stopping.C. Install actuator and bracket to valve being sure to leave all fastener connections hand tight. If possible,

stroke valve and actuator to a half open position 45° and physically shift actuator back and forth untilcoupling and all fasteners are relaxed then tighten all bolts and nuts. This procedure will accuratelyalign valve stem to actuator output shaft and pro long valve stem seallife.

D. Cycle valve/ actuator assembly and observe for smooth operation.E. Adjust travel stops for perfect alignment in both the open and closed positions.

~ If jackscrew override is installed, please refer to section 2B for stroke adjustment.F. Tubing Connections - sorne models utilize two pistons for added power. Spring return (single acting)

dual cylinder designs require one "jumper" to make the supply port common to both pistons. Doubleacting (air to air) dual cylinder designs require two "jumpers." See FIGURE 1 for typical arrangement.

1. Installation

FIGURE 4

Manual handpump specifications1. Maximum reservoir fill volume = 75 cu. in.2. Pump relief pressure = 3000psi3. Pump volume/ stroke = .66 cu. in.4. Handle length = 24 in.

MANUAL HANDPUMP OVERRIDE

3. Manual Handpump Override (see FIGURE 4)A. Maintain fluid level to fillline using ISO-22 hydraulic fluid. Do not use brake fluid.B. Always open reservo ir air vent when operating pump.C. The selector control valve is set in center position for remote operation. Select left or right positions

for manual open or manual close as shown on pump label.D. Store and lock handle to keep pump plunger closed. Do not remotely operate actuator with han die

on plunger.

FIGURE 3

SEALED JACKSCREW ASSEMBLY

LOCK NUT

STAOKE ADJUSTING SCAEW

LOCK NUT·

STROKE ADJUSTING SCAEW ~~~~~=~-==~~~~?_JACKSCREW OVERRIDE - MODELS 370, 740 & 575

FIGURE 2

JACKSCREWEXTENDED

JACKSCREWFULLY RETRACTED

NOTE: AIR ESCAPESUNLESS JACKSCREWFULLY RETRACTED

ACTUATOR STROKEADJUSTING SCREW

JACKSCREW OVERRIDE - MODELS 006-270

(.s)

\Sr/ ~. ~~---~····-G)-r- ........z;r- '--'---'--'1'¡-;'.'

'-'

SECTION A-AYOKE SHOWN AT MID-STROKEPOINTER OMITTED FOR CLARITY

DOUBLE ACTINGAIRTOAIRONE PISTONMODELS: 006, 015, 023, 036,050,135,210,370,575 &HP

DOUBLE ACTINGAIRTOAIRTWO PISTONSMODELS: 012,072,100,270,420, 740, 1150 & HP

SINGLE ACTINGSPRING RETURNONE PISTONMODELS: 006, 015, 023,036, 050, 135,210,370 & 575)tf~~~ii!im~~~=$:~~~

SINGLE ACTINGSPRING RETURNTWO PISTONSMODEL: 012, 046, 072100,270,420,740,1150& HP

Electroless nickel-plated carbon steel on HP30U-8

MATERIALS OF l;UN::) IRUCTION79S MAT:::::RIAL 79B MATERIAL 79C MATERIAL HP MATERIAL

ITEM 003-100 135-1150 006-100 135-1150 575 & 1150 HP15 HP25 & HP301 Housina 316-SS 316-SS DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON

2 Yoke 17-4 SS 17-4 SS 17-4 PH 17-4 PH 17-4 PH 17-4 PH 17-4 PH

3 Outout shaft 17-4 SS 17-4 SS 4140 4140 4140 17-4 PH 17-4 PH

4 Piston rod 316 SS 316 SS CPO CPO CPO CPO CPO

5a Bushina - outout shaft TEFLON - BRONZE - - BRONZE -

5b Needle bearina - STEEL - STEEL STEEL - STEEL

6a Yoke oin 18-8 SS - STEEL - - STEEL -

6b Kev - voke - 17-4 PH - STEEL STEEL - STEEL

7 Bushina - niston rod TEFLON TEFLON BRONZE BRONZE BRONZE BRONZE BRONZE

8 Retainina rina - outout shaft 15-7 MO 15-7 MO STEEL STEEL STEEL STEEL STEEL

9 Thrust oín 440C SS 440C SS 440C SS 440C SS 440C SS 440C SS 440C SS

10 Roller bearina 440C SS 440C SS 440C SS 440C SS 440C SS 440C SS 440C SS

11 Retainina rina - oin 15-7 MO 15-7 MO STEEL STEEL STEEl STEEL STEEL

12a Set screw 18-8 SS - 18-8 SS - - 18-8-SS -

12b Retainina rina - lower bearinq - 18-8 SS - STEEL STEEL - STEEL

13a Position indicator 304 SS - 304 SS - - 304 SS -13b Thrust Plate - 316 SS - DUCTILE IRON DUCTILE IRON - DUCTILE IRON

14 Hex head bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18~8SS STEEL

15 lock washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL

16 Pointer SOFT PVC SOFT PVC SOFT PVC SOFT PVC SOFT PVC SOFT PVC SOFT PVC

17 Round head screw 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL

18 Cover - housina 316 SS 316 SS STEEL STEEL STEEL STEEL STEEl

19 Hex head bolt 18-8 SS 18-8 SS 18-8 SS STEEl STEEL 18-8 SS STEEL

20 Lock washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL

21 Flat washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL

22 Thrust washer - 18-8 SS - STEEl STEEL - STEEL

23 Cover aasket FIBER FIBER FIBER FIBER FIBER FIBER FIBER

24 Cvlinder 316 SS 316 SS 316 SS 316 SS CS,ENP 316 SS 316 SS·

25 Piston 316 SS 316 SS DUCTILE IRON DUCTILE IRON DUCTllE IRON STEEL STEEL

26 Adaotor 316 SS 316 SS DUCTILE IRON DUCTllE IRON DUCTllE IRON STEEL STEEl27 Endcao 316 SS 316 SS DUCTILE IRON DUCTllE IRON DUCTILE IRON STEEL STEEL28 Rod cover 316 SS 316 SS DUCTILE IRON DUCTILE IRON DUCTILE IRON STEEl STEEL29 Seal - Diston rod BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N30 Seal - oiston bolt BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N31 Seal - oiston BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N32 Housina aasket FIBER FIBER FIBER FIBER FIBER FIBER FIBER33 Piston bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEl 18-8 SS STEEL34 Lock washer 18-8 SS 18-8 SS 18-8 SS STEEl STEEL 18-8 SS STEEL35 Bearina - oiston TEFLON TEFLON TEFLON TEFLON TEFLON TEFLON TEFLON36 Thread seal SS/EPDM SS/EPDM SS/EPDM STEEUEPDM STEEUEPDM BUNA-N BUNA-N37 Travel stoo bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL38 Jam nut 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL39 Socket head cao screw 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL40 Lock washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL41 Tie rod 18-8 SS 18-8 SS 18-8 SS STEEL STEEL STEEL,EZP STEEL,EZP42 Seal - outout shaft - - BUNA-N - - BUNA-N -43 Lock washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL44 Hex head bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL45 Thread seal BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N46 Stato-seal TFE-GF BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N47 Nameolate label MYLAR MYLAR MYLAR MYLAR MYLAR MYLAR MYLAR48 Seal - outout shaft bushinq - - BUNA-N - - BUNA-N -49 Cvlinder - sorina side 316 SS 316 SS 316 SS 316 SS CS,ENP 316 SS 316 SS50 Tie rod - sorina side 316 SS 316 SS 316 SS STEEL STEEL 316 SS STEEL51 Hex head bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL52 Adiustina bolt 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL53 Flat washer 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL54 Endcao - sorina side 316 SS 316 SS DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON55 Outer sorina STEEL STEEL STEEL STEEL STEEL STEEL STEEL56 Inner sorina STEEL STEEL STEEL STEEL STEEL STEEL STEEL57 Breather 18-8 SS 18-8 SS 18-8 SS STEEL STEEL 18-8 SS STEEL58 Sprinq label LEXAN LEXAN LEXAN LEXAN LEXAN LEXAN LEXAN

*

FIGURE 7FIGURE 6FIGURE 5

4. Proximity Switch MountingMorin actuators are available with drilled and tapped ports to accept any proximity switches with 5/8-18UNF threads. Mounting brackets are not required.A. Remove plastic plugs from proximity ports on back side of actuator housing.B. Insert switch and turn clockwise until switch touches ferrous activator on yoke, then back off

approximately 1/16".C. Test switch by stroking actuator and verifying make and break of switch.D. Repeat procedure for second switch if required.

5. Spring ConversionUnless otherwise specified, all single acting actuators are shipped to distributor stock with an 80 PSI ratedspring package. The 80 PSI package consists of an outer and inner spring. To convert actuator for use on60 PSI service simply remove the inner spring per the procedure listed below. Remaining spring packsmust be ordered from the factory.CAUTIONBefore attempting spring conversions always be sure that spring is in the "faíled" or extended position.Remove any accessory equipment that may cause the spring to be cocked (e.g.: declutchable override,jackscrew override, etc.).A. Back off adjustable travel stop on end of actuator opposite spring end. This will allow maximum

spring extension inside the actuator.(Models 79S-003 & 79B-006 only)B. Remove tie rod bolts (41). Back offpiston bolt (33) until spring is fully relaxed and piston (25) is free.C. Remove inner spring to convert 80 PSI spring package to 60 PSI spring package.D. Re-assemble piston, cylinder, endcap and tie rods, being sure to follow the tie rod tightening sequence

(FIGURE 8). Do not over tighten bolts. Refer to Assembly Torque Requirement Chart (FIGURE 9).(AH models except 79S-003 & 79B-006 only)B. Alternately and uniformly remove bolts (51) from hollow tie rads. Back off each bolt approximately

1/4", following the tie rod sequence (FIGURE 8). Repeat the sequence until spring(s) is/are totallyrelaxed and endcap is free.

C. Remove inner spring to convert 80 PSI spring package to 60 PSI spring package.D. Re-assembly endcap with bolts (51). Use reverse procedure as shown in Step B, being sure to follow

the tie rod tightening sequence (FIGURE 8). Be sure each hollow tie rod slides into counterbore inendcap. Do not over tighten bolts. Refer to Assembly Torque Requirement Chart (FIGURE 9).

E. Remove nameplate from actuator and stamp or etch correct spring pressure rating accordingly.

6. Failure Mode Change(Models 003-100 & HP15)Conversion from "faíl close" to "faíl open" is very simple and never requires actuator disassembly orspecial order. Simply remove pointer and indicator plate and mount on opposite side of actuator.(Models 135-1150, HP25 & HP30)Requires disassembly to change failure mode and should be designated upon order entry.

1. Removal of Actuator from ValveCAUTIONDo not attempt to remove mounting bolts between actuator and valve until supply pressure has beendisconnected and vented. If spring return, be sure that valve is completely in failed position. If valve isfrozen in a position causing the spring to be cocked, removal of bracket bolts would allow spring tostrake, resulting in the actuator rotating over bracket causing possible injury or damage.A. Loasen bracket to actuator bolts to "hand tíghten" position.B. Physically shift actuator back and forth to be sure there is no strain (or shear stress) on the bracket

bolts. Once it has been determined that there is no pressure or spring coil remaining in actuator,remove bolts and remove actuator and coupling from valve.

C. In the event the valve is frozen or locked in place, resulting in spring energy remaining in theactuator, replace adjusting screw (37) on end of actuator opposite spring end with a length of "allthread" rod of sufficient length and turn clockwise until it contacts the piston. This procedure willsafely secure the piston and spring assembly and allow actuator removal. Be sure to remove "allthread" rod prior to actuator disassembly.

8. Actuator DisassemblyA. Remove endcap(s) (27), tie rods (41) and cylinder (24). Remove rod cover (28) if applicable.

SPRING RETURN ONLY - Follow instructions for spring removal as shown in steps 5A and 5B.B. Remove piston bolts (33) and pistons (25).C. Remove adaptor (26) and piston rod seals (29).

Note: 79S-003, 79B-006 & 79B-015 have one piece cast housing/adaptor.D. Remove nameplate (18). pointer (16) and position indicator (13).E. Disengage yoke (2) from roller bearing assembly by pulling piston rod to extreme right, as in

FIGURE 5 and swing yoke mechanism clear of roller bearings as in FIGURE 6.F. Rotate pisto n rod 900 to allow access to retaining ring (11) as shown in FIGURE 7.G. Remove retaining ring and bearing (10). Then rotate piston rod shaft 1800 and remove remaining

bearing and thrust pin assembly.H. Remove piston rod (4) and piston rod bushings (7).(Models 003-100 & HPI5)1. Remove plug (12) from back of housing.J. Using a punch or suitable dowl pin, insert through clearance hole and press yoke pin (6) out.K. Remove retaining ring (8) from output shaft. Remove output shaft and yoke.L. Remove bushings (5) from housing.(Models 135-1150, HP25 & HP30)1. Remove retaining rings on both ends of output shaft.J. Remove thrust plate and washers on top of actuator.K. Using a soft hammer, drive output shaft out through top of housing.L. Withdraw yoke from housing.M. Remove both top and bottom bearings by striking the end of bearing with a blunt object.

9. Actuator Assembly(Models 003-100 & HPI5)A. Insert piston rod bushings (7) and output shaft bushings (5) in housing. (On models 79B-006 thru 100

lube output shaft bushing O-rings (48)with Dow Corning #55 lubricant. Push one O-ring halfway oneach bushing and install bushings in housing.)

B. Place yoke (2) in position in housing. Lubricate with WD40 or similar lubricant and install output shaft (3).(On models 79B-006thru 100,lube output shaft O-rings (42)with Dow Corning #55Iubricant. Install oneO-ring on one end of output shaft and insert thru housing and yoke. Install second O-ring on opposite endof output shaft and push output shaft back into housing.) Secure output shaft with retaining rings (8).

C. Lubricate and press yoke pin (6) into yoke and output shaft assembly from open side of housing. Besure pin is pressed flush in yoke to prevent interference with pisto n rod (4).

(Models 135-1150 HP25 & HP30) .A. Insert yoke key into output shaft.B. Install yoke in housing. Slide output shaft through top of housing into yoke. Install lubricated upper

and lower bearings.C. Installlower thrust washer, thrust plate, upper thrust washer, and clip. Installlower bearing clip.(AH Models)D. Lubricate with WD40 and install pisto n rod (4) being careful not to scratch sealing surfaces when

sliding through yoke assembly.E. Swing yoke clear toward left side of housing as shown in FIGURE 7.F. Sub-assemble thrust pin (9) with one roller bearing (lO) and one retaining ring (11). Pre-Iubricate

sub-assernbly with a high temperature grease such as "Whitmore's Omnitemp 11"grease.G. Install roller bearing sub-assernbly per FIGURE 7. Rotate pisto n rod 1800 and assemble second roller

bearing and retaining ringo Place ample amount of high temp grease on roller bearing and inside weararea of yoke.

H. Engage roller bearing in yoke assembly as shown in FIGURE 7, 6, & 5.1. Install plug (12) in back of housing if applicable. Use "Loctite 222 Thread Locker."J. Assemble bolt (33) on end of piston rod before installing rod cover.K. Install rod cover (28) if applicable. Actuators utilizing one piston only require a rod cover. Bolt rod

cover and gasket in place with socket head screws (39). Use "Loctíte 262 Permanent Thread Locker,"L. Assemble piston rod O-ring (29)on piston rod. Lubricate O-ring with Dow Corning O-ring #55 lubricant.M. Assemble adaptor (26) to housing. A gasket must be used between adaptor and housing. If actuator is

spring return model be sure to insert long tie rod bolts (51) with washer into adaptor prior tobolting adaptor to housing. Insert hex head bolts (44) with thread seals (45). Use "Loctite 262Permanent Thread Locker". Uniformly tighten bolts. Refer to Assembly Torque Requirement(FIGURE 9) for proper bolt torque. .' .

(Models 79S-003, 79B-006 & 79B-015 only) One piece casting for housing and adaptor is used.N. Lubricate pisto n bolt O-ring (30) with Dow Corning #55 lubricant and put on piston rod. Assemble

piston (25) to rod with bolt (33) and lock washer (34). Use Loctite 262 on bolt threads. Rotate pisto nbefore tightening bolt to ensure proper seating of O-ringo

O. Install cylinder gasket or lubricated O-ring (46) in adaptor groove.P. Lubricate piston seal (31)with Dow Corning #55 lubricant and install on piston.

kit #*actuator .size

indicatesrepair kit

2023RK79S79B79CHP

*Kit 1 includes items 29, 30, 31, 32, 35. 45 & 46.Kit 2 includes Kit 1 plus items 5, 7. 36. 42 & 48.

19B

PART NUMBER DESIGNATIONFOR REPAIR KIT S

ASSEMBLY TORQUE REQUIREMENTS (FT/LBS)Adaptar Pistan Tie Tierodbolt

Model No 80lt(44) aou (33) Rod (41) Springside(51)003 N/A 15 10 N/A

798-006 N/A 15 15 N/A015 N/A 15 30 25

79S-006,012 15 15 15 10023 to100 30 40 30 25135,270 150 150 150 100210,420 150 150 250 250370,740 250 250 250 250575,1150 250 250 250 250

FIGURE 9FIGURE 8

TIE ROO TIGHTENING SEQUENCE

Q. Lubricate piston bearing (35) and cylinder (24) with Dow Corning #55 lubricant. Hold piston bearing(35) in place cm pisto n (25) and slide cylinder (24) over piston and bearing until cylinder is in contactwith gasket/O-ring (46) in adaptor groove. On spring return models substitute cylinder (24) withcylinder (49) on spring side.

R. Assemble tie rods (41) on adaptor.S. Insert cylinder gasket/O-ring (46) in endcap (27) groove and place endcap over tie rods (41) and on

cylinder (24).T. Assemble lock washers (43) and hex nuts (42) on tie rods and uniformly tighten. Do not exceed torque

values shown in Assembly Torque Requirement Table (FIGURE 9).SPRING RETURN ONLY(Models 79S-003 & 79B-006 only)U. Place cylinder gasket/O-ring (46) in endcap (54).V. Place springs in adaptor, being sure to nest in contours. Mount piston over spring and fasten with

piston bolt (33) and lock washer (34). Do not over tighten bolt. Refer to Assembly TorqueRequirement Table (FIGURE 9).

W. Install cylinder endcap and tie rod bolts with lockwasher. Do not over tighten bolts. Refer toAssembly Torque Requirement (FIGURE 9).

(AH models except 79S-003 & 79B-006)U. On spring return models, hollow tie rods (50) must be screwed onto long bolts (51) protruding- from adaptor (26).

V. Place cylinder gasket/O-ring (46) in endcap (54). Insert long bolts (51) with flat washer (53) in endcaps.W. Place springs in cylinder, being sure to nest in pisto n contours. Mount endcap over extended spring(s)

and fasten to hollow tie rods (50) with bolts (51). To prevent galling lubricate bolts (51) with"Whítmore's Omnitemp 11" grease or equal. Alternately and uniformly tighten bolts (51) in hollow tierod. Tighten each bolt approximately 1/4"-1/2" following sequence shown in Tie Rod TighteningSequence (FIGURE 8) until spring is completely compressed. Be sure each hollow tie rod slides intocounterbore in endcap. Do not over tighten bolts. Refer to Assembly Torque Requirement Table(FIGURE 9).

X. Install position indicator (13) and pointer (16). Assemble adjusting screws (37), thread seals (36), andjam nut (38).

Y. Stroke actuator with rated supply air and check for leaks.