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Alfa Laval Tri-Clover 741 Series, Service & Installation Manual, Page: 12 / 34

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Alfa Laval Tri-Clover 741 Series Service & Installation Manual Download Page 12

- 12 -

MAINTENANCE

"TR & TR2" STEM/SEAT ASSEMBLY

REMOVAL OF PTFE SNAP-ON SEAT

1.

Refer to valve disassembly section to remove stem / seat assembly
from valve.

2.

Using a knife, partially cut through the upper ring portion of Snap-On
Seat, avoiding contact with stainless steel stem.  Grasp both cut
ends of Snap-On Seat and force apart for removal from Stem. Since
there are no slots, the TR2 seat will require cutting through sides and
base of seat.

INSTALLATION OF REPLACEMENT PTFE SNAP-ON SEAT

Tri-Clover’s replacement Snap-On Seats do not require heat or special
tools for proper installation.  Snap-On Seats are installed by applying
uniform pressure on all sides.  Pressure can be applied by using a Tri-
Clamp or Bevel Seat ferrule the same size as the valve.

Due to the greater force required to instal the TR2 style seat, we
recommend using a TR2 seat tool. This holds the seat more
securely and can also be used on standard TR seat installation.

See parts list for tool numbers

.

SHUT OFF VALVE OR LOWER SEAT OF DIVERT VALVE

1.

Place Snap-On Seat on the lower portion of the stem.

2.

Place assembly from Step 1 on Tri-Clamp or Bevel Seat ferrule,
resting on a hard flat surface such as a bench or table.

3.

Apply firm even downward pressure on the stem until the Snap-On
Seat hits the shoulder of the stem and snaps into place.

4.

Examine seat assembly to be sure each individual tab is secure
under the smaller lip portion of the stem.  Press tabs down with your
fingers or a straight edge.  Holding Stem/Seat Assembly in one hand,
rotate the Snap-On Seat.  For proper CIP cleaning the seat should
turn freely on the stem.

5.

Refer to valve assembly section for reassembly.

UPPER SEAT OF DIVERT VALVE

1.

Place Snap-On Seat on the upper portion of the stem.

2.

Place Tri-Clamp or Bevel Seat ferrule on top of assembly, resting on
a hard, flat surface such as a bench or table.

3.

Apply firm, even, downward pressure of Tri-Clamp or Bevel Seat
ferrule until Snap-On Seat hits the shoulder of the stem and snaps
into place.

4.

Examine Seat Assembly to be sure individual tab is secure under the
smaller lip portion of the stem.  Press tabs down with your fingers or a
straight edge.  Holding Seat Assembly in one hand, rotate the Snap-
On Seat.  For proper CIP cleaning, seat should turn freely on the
Stem.

5.

Refer to valve assembly section for assembly.

Cut here

to remove

seat.

Lip

Straight
Edge

Push Tab Here Up

Tri-Clamp or Bevel Seat

Ferrule to be same size

as valve

Shoulder

Lower Portion

Tri-Clamp or Bevel Seat

Ferrule to be same size

as valve

Upper Portion

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Summary of Contents for Tri-Clover 741 Series

Page 1: ...lized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of their respective owners Fi...

Page 2: ...761VSM Tri Clover Air Actuated Valves Series 741 761 762 771 Service Installation Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 3: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 4: ... so could result in personal injury or equipment damage SAFETY IMPORTANT SAFETY INFORMATION 5 INTRODUCTION ABOUT THIS MANUAL 6 MAINTENANCE VALVE DISASSEMBLY 7 VALVE DISASSEMBLY 8 VALVE COMPONENT INSPECTION 9 VALVE ASSEMBLY 10 TR STEM SEAT ASSEMBLY 12 TYPE 10 20 AND 30 ACTUATORS 13 TYPE 80 ACTUATOR 15 TYPE 15 AND 25 ACTUATOR 17 PARTS LIST 761 741 SHUT OFF DIVERT REVERSE ACTING SHUT OFF 20 771 THROT...

Page 5: ...g WARNING SPRING UNDER LOAD DO NOT ATTEMPT TO CUT ACTUATOR OPEN REFER TO SERVICE BULLETIN Part Number 38 228 WARNING HAZARDOUS VOLTAGE DISCONNECT POWER BEFORE SERVICING Part Number 38 294 WARNING SPRING UNDER LOAD ACTUATOR CYLINDER MAY EJECT WITH SUFFICIENT FORCE TO CAUSE SERIOUS INJURY REMOVE ACTUATOR FROM VALVE BEFORE DISASSEMBLING ACTUATOR REFER TO SERVICE BULLETIN Part Number 38 264 for diaphr...

Page 6: ...ce Manual CTASM for more information on maintenance and components of the control top module IMPORTANT Throughout this manual instructions for all valves have been grouped by body type Refer below to find your valve body type before continuing to any of the following sections INTRODUCTION SERIES 761 741 771 VALVES Shut Off 10 30 90 Divert Reverse Acting 21 23 27 41 43 47 Elbow Kettle 21 22 29 31 3...

Page 7: ... oils and other damaging elements from the air downstream from the air compressor These filters and other components can be installed downline from the compressor as well as on control panels to help minimize the problem by further cleaning the air before it gets to your valves and system components Filter elements should be changed at least once a year as part of yournormalplantmaintenanceprogram...

Page 8: ...ve split bushing and o ring from valve bonnet DIVERT Separate upper valve body from yoke by removing three bolts Remove split bushing washer and o ring from upper body ELBOW Separate elbow valve body from yoke by removing three bolts Remove split bushing sleeve and o ring from body Separate yoke from actuator by removing four bolts Remove green bushing retainer and o ring between yoke and actuator...

Page 9: ... to the TR2 Seat Replacement section for installation of TR Seats Inspect stem finish for galling nicks or scratches Leakage may result from these irregularities SPLIT BUSHING Inspect for signs of cracks nicks scratches or excessive wear on inside diameter A worn bushing will not properly align valve stem O RING S Inspect for cuts abrasions flat spots or other damage that would cause leakage or in...

Page 10: ...lace green bearing retainer into bottom of actuator Place actuator onto yoke Align yoke air port with unthreaded thru hole in actuator Fasten with four bolts and lock washers MAINTENANCE CAUTION To prevent personal injury keep hands and tools out of and away from valve bodies and stems when applying or releasing air to an actuator The actuator stem assembly moves with extreme force and suddenness ...

Page 11: ...ert Elbow DIVERTANDELBOW Apply 60psig air to actuator Normally Open Divert and Normally Closed Elbow Valves Only SHUTOFF DIVERT ELBOW KETTLE Push valve stem through bonnet until it meets the actuator stem Partially thread valve stem onto actuator stem by hand until nylon lock resistance is felt Apply an open end wrench over the valve stem flats turn clock wise and tighten until valve stem meets ac...

Page 12: ...downward pressure on the stem until the Snap On Seat hits the shoulder of the stem and snaps into place 4 Examine seat assembly to be sure each individual tab is secure under the smaller lip portion of the stem Press tabs down with your fingers or a straight edge Holding Stem Seat Assembly in one hand rotate the Snap On Seat For proper CIP cleaning the seat should turn freely on the stem 5 Refer t...

Page 13: ...ing Replacement Bushings guide the actuator stem while packings provide sealing around the stem The bushing and packing should both be replaced if one or the other fails Even if only one end fails both ends of the actuator should be serviced Disconnect and remove actuator completely from valve before proceeding with the steps that follow see Valve Disassembly MAINTENANCE TYPE10 20 AND30ACTUATORS A...

Page 14: ...tions After every disassembly the nylon locking pin must be replaced Punch out the old nylon pin with an 1 8 inch or smaller diameter punch Insert a new nylon locking pin ACTUATORLUBRICATION For optimum performance lubricate once annually Inject C137 or STP oil treatment into the unthreaded thru hole in each end of the actuator Roll actuator on a flat surface repeatedly to obtain uniform coverage ...

Page 15: ...2 O Ring 10 25 454 05 316 1 End Cap 11 25 454 10 316 1 Cover Plate 12 LWA1300 SS 4 Lockwasher 13 SC1315H SS 4 Hex Bolt 14 13 170 S 1 Adjusting Nut 15 16 163 1 E Ring 16 25 454 08 1 Adj Nut Cover Type 80 Actuator Replacement Parts Full Mid ADJUSTMENT There is one adjustment and it sets the mid position stop This stop determines the length of mid position stroke 1 Loosen four end cap bolts until pla...

Page 16: ...shing and packing from damage during assembly See Type 10 20 AND 30 Actuator Maintenance Disassembly 1 Separate adjustment knob and cover plate by removing four bolts 2 Remove E ring and unscrew adjustment nut from actuator stem completely 3 Remove spacer end cap bushing retainer and o ring from actuator Assembly 1 Lubricate o ring with L1011 Sanitary Silicone Spray Insert o ring retainer and bush...

Page 17: ...e completely 2 Assemble the yoke to the actuator without the green bushing retainer Assemble the valve stem to the actuator stem CAUTION To prevent personal injury DO NOT attempt to remove the packing and bushing without the valve stem threaded onto the actuator stem The stem is required because the packing and bushing will be forced out of the actuator under air pressure and will be trapped by th...

Page 18: ...ry apply constant hand pressure and unscrew completely Spring force will push the cylinder up when threads disengage See Figure 2 4 Pull cylinder assembly off the bonnet and remove spring 5 Separate diaphragm assembly from cylinder by holding cylinder and pulling on actuator stem 6 Place diaphragm assembly into a vise and secure Inner Diaphragm Guide as illustrated in Figure 3 Do Not over tighten ...

Page 19: ...galling Place cylinder assembly onto spring To prevent injury compress spring by hand and thread cylinder onto bonnet for at least 3 complete turns Apply a strap wrench to cylinder and tighten until it bottoms onto bonnet CAUTION 8 Remove actuator from vise Insert packing and bushing into counter bores on bonnet 9 Apply Removable Loctite to the fine threads of the actuator stem Push actuator stem ...

Page 20: ...ri Clamp 43M Lower cross Upper cross Tri Clamp 47M Upper cross Tri Clamp Actuator Types 10L Long stroke normally open 10S Short stroke normally open 20L Long stroke normally closed 20S Short stroke normally closed 30L Long stroke air both ways 30S Short stroke air both ways 80S Mid Position Port Size tube OD 1 11 2 2 21 2 3 4 Material 316L Stainless Steel M designated standard Tri Clamp port conne...

Page 21: ...8 04 25 428 04 25 428 04 25 428 04 7 End Cap 25 428 06A 25 428 06A 25 428 06A 25 428 06A 25 428 06A 25 455 06 8 Red Caplug 12 493 12 493 12 493 12 493 12 493 12 493 9 Vent Plug not shown MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP 10 Lockwasher LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS 11 Screw SC1308H SS SC1308H SS SC1308H SS SC1308H...

Page 22: ...ot Available 20 514 1 1 2 20 514C 2 20 514C 2 1 2 20 514C 3 20 514C 4 30 Upper Body Tee Not Available 7 1024TM 1 1 2 316L 7 1024TM 2 316L 7 1024TM 2 1 2 316L 7 1024TM 3 316L 7 1024ATM 4 316L 30I Upper Body Tee 741 Not Available 7 1024TMIA 1 1 2 316L 7 1024TMIA 2 316L 7 1024TMIA 2 1 2 316L 7 1024TMIA 3 316L 7 1024ATMI 4 316L 31 Upper Body Cross Not Available 7 1024CM 1 1 2 316L 7 1024CM 2 316L 7 10...

Page 23: ...M Lower tee Upper tee Tri Clamp 27M Upper tee Tri Clamp 30M Lower cross Tri Clamp Actuator Types 10 Normally open 20 Normally closed 15 Diaphragm normally open 25 Diaphragm normally closed 80 Mid Position short stroke only Port Size tube OD 1 11 2 2 21 2 3 4 Material 316L Stainless Steel M designated standard Tri Clamp port connection Other port connections are available upon application e g Tri W...

Page 24: ... 25 428 04 7 End Cap 25 428 06A 25 428 06A 25 428 06A 25 428 06A 25 428 06A 25 455 06 8 Red Caplug 12 493 12 493 12 493 12 493 12 493 12 493 9 Vent Plug Not Shown MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP 10 Lockwasher LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS 11 Screw SC1308H SS SC1308H SS SC1308H SS SC1308H SS SC1308H SS SC1309H S...

Page 25: ...1024TM 1 1 2 316L 7 1024TM 2 316L 7 1024TM 2 1 2 316L 7 1024TM 3 316L 7 1024ATM 4 316L 31 Upper Body Cross Not Available 7 1024CM 1 1 2 316L 7 1024CM 2 316L 7 1024CM 2 1 2 316L 7 1024CM 3 316L 7 1024ACM 4 316L 32 Split Stem Bushing Not Available 40 64 40 64 40 64 40 64 40 75 33 Seal Retaining Washer Not Available 15 171 316L 15 171 316L 15 171 316L 15 171 316L 15 175 316L 34DS Stem Seat Assembly S...

Page 26: ...Flanged Tri Clamp 31M 90 Elbow Tri Clamp 33M 45 Elbow Flanged Tri Clamp 35M 45 Elbow Tri Clamp Tank Outlet Valves 13M 90 Tee Flanged Tri Clamp 21M 90 Elbow Tri Clamp 22M 90 Offset Front Tri Clamp 57M 90 Elbow Right Offset Tri Clamp 58M 90 Elbow Left Offset Tri Clamp 123M 90 Tee Tri Clamp Tangential Valves 47M 90 Right Hand Outlet Tri Clamp 48M 90 Left Hand Outlet Tri Clamp 49M 90 Right Hand Outlet...

Page 27: ...8 04 7 End Cap 25 428 06A 25 428 06A 25 428 06A 25 428 06A 25 455 06 8 Red Caplug 12 493 12 493 12 493 12 493 12 493 9 Vent Plug Not Shown MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP MS 105 58A CP 10 Lockwasher LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS 11 Screw SC1308H SS SC1308H SS SC1308H SS SC1308H SS SC1309H SS 12 Screw SC1312H SS SC1312H SS SC1312H SS SC1312H SS SC131...

Page 28: ... 1052TM 3 316L 7 1052ATM 4 316L Additional Parts for Kettle Tank Outlet Valves Type 21 22 29 31 33 35 57 58 Key Description 2 2 1 2 3 4 27 Rubber Stem Seat Assy 19 1305 2 316L 19 1305 2 1 2 316L 19 1305 3 316L 19 1305A 4 316L 30I Body for 762 21 762 31 7 1046M 2 316L 7 1046M 2 1 2 316L 7 1046M 3 316L 7 1046AM 4 316L 30J Body for 762 22 7 1060M 2 316L 7 1060M 2 1 2 316L 7 1060M 3 316L 7 1060AM 4 31...

Page 29: ...er 761 90M 20L 2 316L Valve Series 761 Molded rubber seat s 761TR PTFE Snap On seat s Body Style Port Connection 90M Y Body Tri Clamp Actuator Types 10L Long stroke normally open 20L Long stroke normally closed Port Size tube OD 11 2 2 21 2 3 4 Material 316L Stainless Steel M designated standard Tri Clamp port connection Other port connections are available upon application e g Tri Weld designed b...

Page 30: ... MS 105 58A CP MS 105 58A CP MS 105 58A CP 10 Lockwasher LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS LWA1300 SS 11 Screw SC1308H SS SC1308H SS SC1308H SS SC1309H SS SC1309H SS 12 Screw SC1312H SS SC1312H SS SC1312H SS SC1312H SS SC1312H SS 13 O Ring 17 17 U 17 17 U 17 17 U 17 17 U 17 89 U 14 O Ring 17 4 U 17 4 U 17 4 U 17 4 U 17 4 U 15 O Ring 17 35 U 17 35 U 17 35 U 17 35 U 17 35 U 16 O Ring 17 10...

Page 31: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 32: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 33: ...e mailed or delivered by purchaser within thirty 30 days after purchaser learns of the facts upon which such claim is based Any claim not made in writingandwithinthetimeperiodspecifiedaboveshallbedeemed waived Purchaser s sole and exclusive remedy and AlfaLaval Inc s maximum liability for claims arising hereunder or for negligence for any and all losses and damages resulting from any cause shall b...

Page 34: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

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