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Instruction Manual

D103302X012

A81 Valve

January 2011

15

Assembly

WARNING

Do not lubricate bearings that will be used for oxygen service, or where the lubrication is incompatible with the process
media. Any use of lubricant can lead to the sudden explosion of media due to the oil/oxygen mixture, causing personal
injury or property damage.

CAUTION

To avoid possible product damage, ensure the bearing tabs are oriented correctly when installing in the following
procedure. See figure 5 for proper orientation of the bearings.

Figure 6. Taper / Expansion Pin Installation

TAPER/EXPANSION PIN LOCATION

INSTALL THE PINS FROM THIS SIDE OF THE DISK.

1

“T” STAMPED ON ACTUATOR
END OF DISK

W9487

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Содержание Fisher POSI-SEAL A81

Страница 1: ...sher POSI SEAL A81 valve DN50 through DN300 or NPS 2 through NPS 12 figure 1 Refer to separate instruction manuals for information covering the power on off actuator and accessories Do not install operate or maintain an A81 valve without being fully trained and qualified in valve actuator and accessory installation operation and maintenance To avoid personal injury or property damage it is importa...

Страница 2: ... scfh per unit of NPS NPS 6 valve 0 6 scfh per MSS SP 61 Flow Direction Standard forward flow is with the seal retainer facing upstream reverse flow is permissible within specified pressure drop limitations Flow Characteristic Approximately linear Disk Rotation Counterclockwise to open when viewed from actuator side of valve body through 90 degrees of disk rotation 1 This material is not listed in...

Страница 3: ...PTFE PTFE 46 to 232 50 to 450 M35 2 N05500 PEEK PTFE PTFE PTFE 46 to 232 50 to 450 1 Minimum allowable temperature for PN series flanges is 10_C 14_F See requirements of EN 13445 2 Annex B for applications below 10_C 14_F with PN series flanges 2 For applications exceeding 316_C 600_F consult your Emerson Process Management sales office for appropriate disk material selection Table 4 Maximum Allow...

Страница 4: ...CAUTION The valve configuration and construction materials were selected to meet particular pressure temperature pressure drop and controlled fluid conditions specified in the customer s order Because some valve body trim material combinations are limited in their pressure drop and temperature range capabilities do not apply any other conditions to the valve without first contacting your Emerson P...

Страница 5: ...e actuator side of the valve body see figure 7 through 90 degrees of disk rotation Rotating the disk key 3 past either the open or closed position could damage the seal and disk sealing surfaces and could cause the disk to jam in the seal retainer 6 With the disk in the closed position install line flange gaskets and insert the valve between the pipeline flanges Use either flat sheet gaskets or sp...

Страница 6: ...0 8 M16X2 80 8 M16X2 80 8 M16X2 85 8 M16X2 85 80 16 M16X2 85 16 M16X2 85 16 M16X2 90 16 M16X2 90 100 16 M16X2 85 16 M16X2 85 16 M20X2 5 100 16 M20X2 5 100 150 16 M20X2 5 100 16 M20X2 5 100 16 M24X3 110 16 M24X3 110 200 16 M20X2 5 100 24 M20X2 5 100 24 M24X3 120 24 M27X3 130 250 24 M20X2 5 110 24 M24X3 120 24 M27X3 130 24 M30X3 5 140 300 24 M20X2 5 120 24 M24X3 120 24 M27X3 140 24 M30X3 5 150 VALVE...

Страница 7: ...ng or partially conductive packing rings such as a carbon filled PTFE female adaptor with PTFE V ring packing to electrically bond the shaft to the valve body for hazardous area service For oxygen service applications provide alternate shaft to valve body bonding according to the following step 9 For oxygen service applications attach the bonding strap assembly key 131 figure 3 to the shaft with t...

Страница 8: ...EAL Packing System for Rotary Valves Instruction Manual D101643X012 for packing instructions If you wish to convert your present packing arrangement to ENVIRO SEAL packing refer to the retrofit kits listed in the parts kit sub section on page 19 of this manual Maintenance Valve body parts are subject to normal wear and must be inspected regularly and replaced as necessary The frequency of inspecti...

Страница 9: ...ect against process media Packing Maintenance Refer to figure 4 for available packing configurations All maintenance operations in this section may be performed with the valve in the line Packing may be PTFE V ring or graphite An ENVIRO SEAL packing system is also available with the A81 valve To install the ENVIRO SEAL packing system in an existing valve follow the instructions in the instruction ...

Страница 10: ...dures Replacing the Packing To replace the packing the actuator must be removed Also the valve should be removed from the pipeline to allow proper readjustment of the disk position WARNING The edges of a rotating disk have a shearing effect that may result in personal injury To help prevent such injury stay clear of the disk edges when rotating the disk key 3 CAUTION Damage to the disk key 3 may o...

Страница 11: ...follower and if used the packing flange D Install the packing flange nuts and tighten them only far enough to stop leakage under normal operating conditions D For oxygen service applications attach the bonding strap assembly key 131 figure 3 to the shaft with the clamp key 130 figure 3 and connect the other end of the bonding strap assembly to the valve body with a cap screw key 35 Secure each cap...

Страница 12: ... surface is scratched nicked dented or worn replace the valve shaft before replacing the packing system 5 Inspect the existing valve shaft If necessary replace the valve shaft as described in the Replacing the Disk Shafts or Bearings section 6 Install the new packing system components as described in the ENVIRO SEAL Packing System for Rotary Valves Instruction Manual D101643X012 7 Install the anti...

Страница 13: ... must be closed during seal ring installation to permit accurate centering of the seal To install the new seal ring assembly D For a soft seal if the spring key 5 was disassembled hook the spring ends together Work the spring into the recess in the seal ring key 4 Place the seal ring assembly onto the disk Set the retainer onto the seal making sure proper alignment between the seal and retainer ha...

Страница 14: ...rding to steps 3 and 4 of the Replacing Seal Ring section on page 12 of this manual 2 Remove hex nuts blind flange gasket spacer if present follower spring seats and follower spring keys 19 17 16 15 9 and 12 3 Clean the gasket surfaces on the blind flange key 17 and on the end of the valve body key 1 4 Rotate the disk key 3 to the fully open position 5 Refer to figure 6 and determine the location ...

Страница 15: ...sudden explosion of media due to the oil oxygen mixture causing personal injury or property damage CAUTION To avoid possible product damage ensure the bearing tabs are oriented correctly when installing in the following procedure See figure 5 for proper orientation of the bearings Figure 6 Taper Expansion Pin Installation TAPER EXPANSION PIN LOCATION INSTALL THE PINS FROM THIS SIDE OF THE DISK 1 T...

Страница 16: ...ectional of Typical Valve Body ACTUATOR END OF SHAFT POSITION INDICATION MARK INDICATES APPROXIMATE DISK POSITION CCW DISK ROTATION TO OPEN X2 X1 Figure 8 Follower Spring Spring Seat Assembly FOLLOWER SPRING SEAT KEY 9 FOLLOWER SPRING KEY 12 FOLLOWER SPRING SEAT KEY 9 ...

Страница 17: ...ket and valve body Tighten the hex nuts key 19 per table 7 6 The valve must be closed during seal ring installation to permit accurate centering of the seal To install the new seal ring assembly or flow ring Table 8 Recommended Actuator Mounting Bolt Torque VALVE SIZE TORQUE DN NPS NSm lbfSft 50 80 100 and 150 2 3 4 and 6 120 88 200 250 and 300 8 10 and 12 250 185 D For a soft seal if the spring k...

Страница 18: ...nces between the disk face and the seal retainer face at the top and bottom of the valve X1 and X2 as shown in figure 7 Adjust the travel stops to rotate the disk slightly until the two measurements are within 0 8 mm 0 032 inch of each other Refer to the appropriate actuator instruction manual for assistance Parts Ordering When corresponding with your Emerson Process Management sales office about ...

Страница 19: ... 1 2 5 8 3 4 RPACKXRT482 RPACKXRT492 RPACKXRT502 RPACKXRT422 RPACKXRT432 RPACKXRT442 25 4 31 8 38 1 1 1 1 4 1 1 2 RPACKXRT512 RPACKXRT522 RPACKXRT532 RPACKXRT452 RPACKXRT462 RPACKXRT472 Repair Kits for ENVIRO SEAL Packing Repair kits for ENVIRO SEAL PTFE packing include one packing set and two anti extrusion washers Repair kits for ENVIRO SEAL graphite packing include two packing rings and two ant...

Страница 20: ...1165X042 Key Description Part Number DN 100 NPS 4 GE23792X042 DN 150 NPS 6 GE16687X042 DN 200 and 250 NPS 8 and 10 GE28145X042 DN 300 NPS 12 GE20539X022 S20910 DN 50 NPS 2 GE27079X012 DN 80 NPS 3 GE21165X012 DN 100 NPS 4 GE23792X012 DN 150 NPS 6 GE16687X012 DN 200 and 250 NPS 8 and 10 GE28145X012 DN 300 NPS 12 GE20539X012 8 Taper Pin 2 req d S17400 DN 50 NPS 2 16A5511X122 DN 80 NPS 3 GE30454X042 D...

Страница 21: ...Instruction Manual D103302X012 A81 Valve January 2011 21 Figure 9 Fisher A81 Valve Assembly GE27325_D ...

Страница 22: ... 200 and 250 NPS 8 and 10 13B8816X112 DN 300 NPS 12 13B8816X142 25 Packing Follower 26 Packing Flange 27 Packing Stud 28 Packing Nut 29 Anti extrusion Ring ENVIRO SEAL use w PTFE packing PEEK 2 req d DN 50 NPS 2 12B7054X012 DN 80 NPS 3 12B7406X012 Key Description Part Number DN 100 NPS 4 12B7418X012 DN 150 NPS 6 12B7442X012 DN 200 and 250 NPS 8 and 10 12B7454X012 DN 300 NPS 12 12B7466X012 30 Sprin...

Страница 23: ...Instruction Manual D103302X012 A81 Valve January 2011 23 ...

Страница 24: ...le upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end ...

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