Emerson POSI-SEAL A81 Instruction Manual

Instruction Manual	A81 Valve
D103302X012	May 2011

Fisherr POSI SEAL™ A81 Rotary Valve

Contents	Figure 1. Fisher A81 Valve with FieldQ™ Actuator
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
Packing Maintenance . . . . . . . . . . . . . . . . . . . . . . . .	9
Replacing the Seal Ring Assembly . . . . . . . . . . . . . .	12
Replacing the Disk, Shafts, or Bearings . . . . . . . . . .	13
Actuator Mounting . . . . . . . . . . . . . . . . . . . . . . . . .	18
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20

W9479

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for the Fisher 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 important to carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you have any questions about these instructions, contact your Emerson Process Management sales office before proceeding.

www.Fisher.com

A81 Valve

Instruction Manual

May 2011

D103302X012

Table 1. Fisher A81 Valve Specifications

Specifications

EN

ASME

Valve Body Size

DN 50, 80, 100, 150, 200, 250, and 300

NPS 2, 3, 4, 6, 8, 10, and 12

Pressure Rating

PN 10 to 40 per EN 12516 1

CL150 and 300 per ASME B16.34

EN 1.0619 steel

WCC steel

Valve Body Materials

EN 1.4409 stainless steel

CF3M (316L) stainless steel

CW2M(1)

CW2M(1)

M35 2(4)

M35 2

EN 1.4409 stainless steel

CF3M stainless steel

PTFE or RPTFE

CW2M

CW2M

Seal(3)

Disk Materials

M35 2

M35 2

Metal or

Chrome plated EN 1.4409 Stainless Steel

Chrome plated CF3M Stainless Steel

UHMWPE(2) Seal

End Connections

Mates with raised face flanges

Mates with raised face flanges

per EN 1092 1

per ASME B16.5

Valve Body Style

Wafer (flangeless) and single flange with tapped or through holes

Face to Face Dimensions

Meets MSS SP68, API 609, and EN 558 standards

PTFE, RPTFE, or UHMWPE seal ring No visible leakage per MSS SP 61

Shutoff

S31600 (316 SST) seal ring - 0.1 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 EN 12516-1 or ASME B16.34. See table 4 for pressure/temperature ratings.

2. UHMWPE stands for ultra high molecular weight polyethylene.

3. RPTFE is a reinforced PTFE seal.

4. This material is not listed in EN 12516-1. See table 4 for pressure/temperature ratings.

Table 2. Valve Size, Shaft Diameter, and Approximate Weight

VALVE SIZE

PRESSURE RATING

SHAFT DIAMETER

APPROXIMATE WEIGHT

Wafer Style

Single Flange

DN

NPS

EN

ASME

mm

Inches

kg

Pounds

kg

Pounds

50

2

PN10 40

CL150/300

12.7

1/2

4.7

10

6.7

15

80

3

PN10 40

CL150/300

15.9

5/8

7.5

17

11.2

25

100

4

PN10 40

CL150/300

19.1

3/4

12.5

28

17.6

39

150

6

PN10 40

CL150/300

25.4

1

15.7

35

26.5

58

200

8

PN10 16

CL150

31.8

1 1/4

30.2

67

40.2

89

PN25 40

CL300

31.8

1 1/4

33.9

75

46.0

102

250

10

PN10 16

CL150

31.8

1 1/4

38.9

86

50.5

111

PN25 40

CL300

31.8

1 1/4

51.8

114

79.2

175

300

12

PN10 16

CL150

38.1

1 1/2

68.7

151

98.3

217

PN25 40

CL300

38.1

1 1/2

76.6

169

104.6

231

Description

The A81 rotary valve with FieldQ rack and pinion actuator offers automated on off, quarter turn performance. FieldQ is available in spring return and double acting piston designs.

The valve body meets PN 10 through PN 40, CL150, and CL300 ratings. Face to face dimensions meet EN 558, API 609, and MSS SP68 standards. Retainer clips provide for versatility to mount and align the same wafer style valve body in different piping configurations (ASME and EN ratings).

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The A81 rotary valve features an eccentrically mounted disk with either soft or metal seal, providing capability for enhanced shutoff. The interchangeable sealing technology allows for the same valve body to accept both soft and metal seals.

Table 3. Material Temperature Capabilities

		MATERIAL			TEMPERATURE
						LIMITS(1)
			EN Materials
Valve Body	Shaft	Bearing Lining and Jacket	Seal	Packing	_C		_F
1.0619 Steel	S17400 or	PEEK / PTFE	PTFE or RPTFE	PTFE or Graphite	–10 to 232		14 to 450
	S20910
			UHMWPE	PTFE or Graphite	–10 to 93		14 to 200
			Metal	PTFE or Graphite	–10 to 232		14 to 450
		R30006 (Alloy 6) or S31600	Metal	Graphite	–10 to 400(2)		14 to 752(2)
		Nitride
1.4409	S20910	PEEK / PTFE	PTFE or RPTFE	PTFE or Graphite	–10 to 232		14 to 450
Stainless
			UHMWPE	PTFE or Graphite	–10 to 93		14 to 200
Steel
			Metal	PTFE or Graphite	–10 to 232		14 to 450
		R30006 (Alloy 6) or S31600	Metal	Graphite	–10 to 500(2)		14 to 932(2)
		Nitride
CW2M	N10276	PEEK / PTFE	PTFE or RPTFE	PTFE	–10 to 232		14 to 450
M35 2	N05500	PEEK / PTFE	PTFE or RPTFE	PTFE	–10 to 232		14 to 450
			ASME Materials
Valve Body	Shaft	Bearing Lining and Jacket	Seal	Packing	_C		_F
WCC steel	S17400 or	PEEK / PTFE	PTFE or RPTFE	PTFE or Graphite	–29 to 232		-20 to 450
	S20910
			UHMWPE	PTFE or Graphite	–18 to 93		0 to 200
			Metal	PTFE or Graphite	–29 to 232		-20 to 450
		R30006 (Alloy 6) or S31600	Metal	Graphite	–29 to 427(2)		-20 to 800(2)
		Nitride
CF3M	S20910	PEEK / PTFE	PTFE or RPTFE	PTFE or Graphite	–46 to 232		–50 to 450
Stainless
			UHMWPE	PTFE or Graphite	–18 to 93		0 to 200
Steel
			Metal	PTFE or Graphite	–46 to 232		–50 to 450
		R30006 (Alloy 6) or S31600	Metal	Graphite	–46 to 454(2)		–50 to 850(2)
		Nitride
CW2M	N10276	PEEK / PTFE	PTFE or RPTFE	PTFE	–46 to 232		–50 to 450
M35 2	N05500	PEEK / PTFE	PTFE or RPTFE	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 Allowable Inlet Pressure for CW2M and M35 2 Valves

TEMPERATURE			CW2M(1)						M35 2(3)
	150(2)	300(2)	PN 10(2)		PN 16(2)	PN 25(2)	PN 40(2)	PN 10(2)	PN 16(2)		PN 25(2)	PN 40(2)
_C				Bar						Bar
–46 to 38	20.0	51.7	10.0		16.0	25.0	40.0	9.3	15.2		23.8	37.9
50	19.5	51.7	9.9		15.9	24.8	39.6	9.3	15.2		23.8	37.9
100	17.7	51.5	9.4		15.1	23.6	37.8	9.3	15.1		23.7	37.8
150	15.8	50.3	9.4		15.1	23.6	37.8	9.3	14.8		23.4	37.2
200	13.8	48.3	9.1		14.6	22.9	36.6	9.0	14.5		22.5	36.3
232	12.7	47.0	9.1		14.6	22.9	36.6	9.0	14.5		22.4	36.2
_F				Psig						Psig
–50 to 100	290	750	145		232	362	580	135	220		345	550
200	260	750	144		230	359	575	135	220		345	540
300	230	730	137		219	342	548	135	215		340	525
400	200	700	133		212	331	530	130	210		325	525
450	185	680	133		212	331	530	130	210		325	525

1. This material is not listed in EN 12516 1 or ASME B16.34. Also see the Installation section.

2. The designations PN or 150 and 300 are used only to indicate relative pressure retaining capabilities and are not EN or ASME pressure temperature rating class designations. 3. This material is not listed in EN 12516-1. Also see the Installation section.

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Installation

Key numbers in this procedure are shown in figure 9 unless otherwise indicated.

WARNING

Always wear protective gloves, clothing and eyewear when performing any installation operations to avoid personal injury.

To avoid personal injury or property damage resulting from the bursting of pressure retaining parts, be certain the service conditions do not exceed either the valve body rating or the flange joint rating, or other limits given in table 1 or on the nameplate. Use pressure relieving or pressure limiting devices to prevent the service conditions from exceeding these limits.

If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section on page 8 in this manual.

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 Process Management sales office.

The maximum allowable inlet pressures for steel and stainless steel valve bodies are consistent with the pressure temperature ratings shown in table 1, except where further limited by the trim and packing material temperature capabilities given in table 3. Valves are also available in CW2M and M35 2 valve body materials. The CW2M valve body material is not listed in EN 12516-1 or in ASME B16.34. The M35-2 valve body material is listed in ASME B16.34, but is not listed in EN 12516-1. Valve bodies constructed of these materials mate with EN and ASME flanges, but must not be installed in systems requiring conformance to EN or ASME standards if not included in EN or ASME pressure/temperature ratings. Maximum allowable inlet pressures for A81 valve bodies made of CW2M or M35 2 construction materials are shown in table 4.

1.Install a three valve bypass around the control valve assembly if continuous operation is necessary during inspection and maintenance of the valve body.

2.Inspect the valve body to be certain it is free of foreign material.

3.The valve is normally shipped as part of a control valve assembly, with an actuator mounted on the valve body.

If the valve body and actuator have been purchased separately or if the actuator has been removed for maintenance, mount the actuator, and adjust actuator travel before inserting the valve body into the line. This is necessary due to the measurements that must be made during the actuator adjustment process. Refer to the Actuator Mounting section on page 18 of this manual and to the separate actuator instruction manual for mounting and adjusting instructions before proceeding.

4.Inspect adjacent pipelines to be certain they are free of any foreign material, such as pipe scale or welding slag, that could damage the valve body seating surfaces.

CAUTION

Damage to the disk (key 3) will occur if any pipe flanges or piping connected to the valve body interfere with the disk rotation path. However, the disk can be rotated without interference when the valve body is installed between adjacent pipe flanges or piping that has an inside diameter equal to or greater than either schedule 80 pipe or compatible EN pipe

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Instruction Manual	A81 Valve
D103302X012	May 2011

sizes. If piping with a smaller inner diameter than specified above is connected to the valve, measure carefully to be certain the disk rotates without interference before putting the valve into operation.

5.Flow is in the standard direction when the seal retainer (key 2) is facing upstream. Standard flow direction is also indicated by the flow direction arrow cast into the valve body. Flow in the reverse direction is permissible within allowable pressure drop limits.

CAUTION

A81 disk rotation is counterclockwise to open (when viewed from the 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 spiral wound gaskets with compression controlling centering rings. Spiral wound gaskets without compression controlling centering rings are not recommended for this purpose.

7.Depending on valve size and pressure rating, the wafer style valve is centered in the pipeline using either retainer clips or the flange bolt holes. (For valves that have four flange bolt holes in the valve body (key 1), each hole engages one corresponding line flange stud.) Insert the valve between the flanges and use either the retainer clips or install two or more line flange studs into the line flanges to help hold the valve in position while centering the valve. Carefully center the valve on the flanges to ensure disk clearance.

D Select and install two pipeline gaskets.

Note

Lubricate line flange studs before inserting them into flanges. If necessary, provide additional support for the control valve assembly because of its combined weight.

WARNING

For single flange valve bodies with threaded line bolt holes, personal injury and property damage could result from sudden release of process pressure if line bolts are not properly installed. To ensure proper line bolt thread engagement, line studs must be centered in the threaded section of the valve body so that each stud has equal thread engagement in the body. See figure 2.

8.After centering the valve body, first lubricate and then install the remaining line flange bolting to secure the valve in the pipeline. Tighten the nuts to the line flange studs in a crisscross pattern to ensure proper alignment of valve, gaskets, and flanges.

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May 2011	D103302X012

Table 5. Stud Bolt Data

	VALVE SIZE			WAFER STYLE AND SINGLE FLANGE STYLE WITH THROUGH DRILLED HOLES
			PN 10			PN 16			PN 25			PN 40
		No. of	Size Dia	A	No. of	Size Dia	A	No. of	Size Dia	A	No. of	Size Dia	A
			&	Dimen		&	Dimen		&	Dimen		&	Dimen
	DN	Stud			Stud			Stud			Stud
			Thread,	sion,		Thread,	sion,		Thread,	sion,		Thread,	sion,
		Bolts			Bolts			Bolts			Bolts
			mm	mm		mm	mm		mm	mm		mm	mm
	50	4	M16X2	125	4	M16X2	125	4	M16X2	130	4	M16X2	130
	80	8	M16X2	140	8	M16X2	140	8	M16X2	150	8	M16X2	150
	100	8	M16X2	150	8	M16X2	150	8	M20X2.5	160	8	M20X2.5	160
	150	8	M20X2.5	160	8	M20X2.5	160	8	M24X3	180	8	M24X3	180
	200	8	M20X2.5	170	12	M20X2.5	170	12	M24X3	190	12	M27X3	210
	250	12	M20X2.5	180	12	M24X3	190	12	M27X3	210	12	M30X3.5	230
	300	12	M20X2.5	190	12	M24X3	200	16	M27X3	230	16	M30X3.5	250
	VALVE SIZE					SINGLE FLANGE STYLE (THREADED HOLES)
			PN 10			PN 16			PN 25			PN 40
		No. of	Size Dia	B	No. of	Size Dia	B	No. of	Size Dia	B	No. of	Size Dia	B
			&	Dimen		&	Dimen		&	Dimen		&	Dimen
	DN	Stud			Stud			Stud			Stud
			Thread,	sion,		Thread,	sion,		Thread,	sion,		Thread,	sion,
		Bolts			Bolts			Bolts			Bolts
			mm	mm		mm	mm		mm	mm		mm	mm
	50	- - -	- - -	- - -	- - -	- - -	- - -	- - -	- - -	- - -	- - -	- - -	- - -
	80	16	M16X2	85	16	M16X2	85	16	M16X2	90	16	M16X2	90
	100	16	M16X2	90	16	M16X2	90	16	M20X2.5	100	16	M20X2.5	100
	150	16	M20X2.5	110	16	M20X2.5	110	- - -	- - -	- - -	- - -	- - -	- - -
	200	16	M20X2.5	110	24	M20X2.5	110	24	M24X3	120	- - -	- - -	- - -
	250	24	M20X2.5	120	24	M24X3	120	24	M27X3	130	- - -	- - -	- - -
	300	24	M20X2.5	120	24	M24X3	130	24	M27X3	140	24	M30X3.5	150
		WAFER STYLE AND SINGLE FLANGE STYLE WITH THROUGH							SINGLE FLANGE STYLE (THREADED HOLES)
	VALVE SIZE			DRILLED HOLES
			CL150			CL300			CL150			CL300
		No. of	Size Dia	A	No. of	Size Dia	A	No. of	Size Dia	B	No. of	Size Dia	B
			&	Dimen		&	Dimen		&	Dimen		&	Dimen
	NPS	Stud			Stud			Stud			Stud
			Thread,	sion,		Thread,	sion,		Thread,	sion,		Thread,	sion,
		Bolts			Bolts			Bolts			Bolts
			Inch	Inch		Inch	Inch		Inch	Inch		Inch	Inch
	2	4	5/8 11	5	8	5/8 11	5.25	- - -	- - -	- - -	- - -	- - -	- - -
	3	4	5/8 11	5.75	8	3/4 10	6.5	8	5/8 11	4.00	16	3/4 10	4.25
	4	8	5/8 11	6	8	3/4 10	7	16	5/8 11	4.00	16	3/4 10	4.50
	6	8	3/4 10	6.5	12	3/4 10	7.5	16	3/4 10	4.25	24	3/4 10	4.75
	8	8	3/4 10	7	12	7/8 9	9	16	3/4 10	4.50	24	7/8 9	5.50
	10	12	7/8 9	8	16	1 8	10	24	7/8 9	5.00	32	1 8	6.50
	12	12	7/8 9	8.5	16	1 1/8 8	11	24	7/8 9	5.25	32	1 1/8 8	7.00

Figure 2. Stud Bolts for Installation (also see table 5)

CENTERLINE OF THREADED SECTION

A

A3887-1

A3886-1

B

B

WAFER STYLE VALVE BODY

SINGLE FLANGE STYLE VALVE BODY (THREADED HOLES)

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WARNING

An A81 valve body is not necessarily grounded when installed in a pipeline. If the valve is used in a flammable or hazardous atmosphere or for oxygen service, an explosion could result due to a discharge of static electricity from the valve components. To avoid personal injury or property damage, always make sure the valve body is grounded to the pipeline before putting the control valve assembly into operation in a flammable or hazardous atmosphere.

Note

Standard packings for the A81 valve are composed of all conductive packing rings (graphite ribbon packing) 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 the clamp (key 130, figure 3), and connect the other end of the bonding strap assembly to the valve body with the cap screw (key 35). Secure each cap screw with a hex nut (key 36).

WARNING

Personal injury could result from packing leakage. Valve packing was tightened prior to shipment; however, the packing might require some readjustment to meet specific service conditions.

Figure 3. Optional Shaft to Valve Body Bonding Strap Assembly

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Figure 4. Packing Arrangement Details

GE39901 A

PTFE V RING

GE39986 A

GRAPHITE RIBBON

STANDARD PACKING

		GE40113 A	SINGLE PTFE PACKING	GE40118 A	GRAPHITE PACKING
				ENVIRO SEAL PACKING
		NOTES:
	1	WITH CONDUCTIVE PACKING, THE FEMALE ADAPTOR IN PTFE V RING PACKING IS CARBON FILLED PTFE.
	2	APPLY LUBRICANT.
	3	THESE TWO SURFACES SHOULD REMAIN PARALLEL AS YOU ALTERNATELY AND EVENLY TIGHTEN THE PACKING NUTS (KEY 28).

Valves with ENVIRO SEALt packing systems will not require this initial re adjustment. See ENVIRO SEAL 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 inspection and replacement depends upon the severity of service conditions. Instructions are given in this section for: replacing trim components, changing disk rotation or valve action, and mounting and adjusting the actuator.

As used in these instructions, actuator refers to power actuators (such as pneumatic diaphragm, piston actuators, and rack and pinion actuators).

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