Bray ACRIS 24 Series 24 User manual

ACRIS® SERIES 24/25
PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
BRAY.COM THE HIGH PERFORMANCE COMPANY

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
2 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
CONTENTS
1.0 DEFINITION OF TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0 PARTS IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.0 SHIPMENT, HANDLING, AND STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.0 INSTALLATION CONSIDERATIONS, PIPING AND VALVE ORIENTATION AND PLACEMENT . . . . . . . . 11
6.0 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.0 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.0 ACTUATOR REMOVAL AND REMOUNTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10.0 RETURN MERCHANDISE AUTHORIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
3 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
1.0 DEFINITION OF TERMS
1.1 All information within this manual is relevant to the safe operation
and proper care of your Bray valve. Please understand the
following examples of information used throughout this manual.
X.X IDENTIFIES CHAPTER HEADING
X.XX Indentifies and explains sequential procedure to be performed.
NOTE: Provides important information, useful tips, and
recommendations related to a procedure.
SAFETY STATEMENTS
The terms DANGER, WARNING, CAUTION, and NOTICE are used
in this document to prevent unwanted consequences. Standard
symbols and classifications are:
DANGER
Indicates an immediate hazardous situation which, if not avoided,
will result in death or serious injury and/or property damage.
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury and/or property damage.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury and/or property damage.
NOTICE
Indicates and provides additional technical information which
may not be obvious, even to qualified personnel. The term is not
used for personal injury hazards or warnings, but can be used to
indicate possible equipment or property damage.
1.2 Compliance with other notes — regarding transport, assembly,
operation & maintenance, and about technical documentation
(e.g., in the operating instructions, product documentation, or on
the product itself) — is essential, to avoid faults which can directly
or indirectly cause severe personal injury or property damage.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
4 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
2.0 INTRODUCTION
NOTICE
Failure to follow these procedures could aect product warranty.
Read and follow these instructions carefully, and keep this
manual in a safe place for future use.
Based on over thirty years experience in the butterfly valve
industry, Bray can state without question the majority of all field
problems for PFA lined butterfly valves are directly related to
poor installation procedures. For this reason, it is very important
all distributors educate their customers regarding proper
installation of PFA lined butterfly valves.
2.1 Butterfly Valve Liner/Disc Function
The PFA over-molded disc and PFA liner are the chemically
resistant barrier to the flowing media. The only wetted parts of
the valve are the PFA disc and liner. The valve body, back-up liner,
packing, springs, bearings, stems, etc. are all isolated from the
flowing media and are non-wetted parts.
The PFA liner extends over the face of the valve body and functions
as the flange gasket. Additional gaskets are not normally required
in installations where the flange strength allows maximum
bolting torque (steel and alloy flanges for example). If sucient
bolting torque cannot be achieved due to flange type or material
strength limits (FRP for example), a gasket may be required for
proper flange sealing. Gaskets may be used when pipeline flange
faces exhibit excess unevenness due to poor machining or weld
distortion.
The PFA liner has a 360 degree, full width resilient back-up liner
(Silicone or Viton), which provides the energy for proper sealing.
The sealing force of the back-up liner is not dependent on flange
compression and acts independently from the pipeline flanges.
The PFA liner is the chemically resistant membrane that separates
the media from the back up liner. Upstream/downstream sealing
is achieved by an interference fit between the disc and liner,
which in turn compresses the back-up liner.
Finally, the disc of a butterfly valve extends beyond the face-to-face
dimension of the valve as it cycles towards the full open position. It
is important to follow the recommended minimum and maximum
flange inside diameters in the mounting instructions to avoid piping
interference with the disc, and achieve proper sealing on the PFA
flange face.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
5 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
3.0 PARTS IDENTIFICATION
3.1 Parts Callout NPS 2 to 2½ | DN 50 to 65
ITEM DESCRIPTION
Body
Body Bolt
Body Face O-ring
DiscStem Assembly
Liner
Backup Liner
Packing
Lower Bushing
Bearing Strip
 Spring
 Atmospheric Seal
 O-ring
 O-ring
 Bearing Strip
 Retaining Ring
 Stem Spacer
 Name Plate
 Drive Screw
19
12
13
11ASSEMBLY
14
10
27
8
9
7
1
30, 31
3
5
1
2
6
3
4

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
6 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
3.0 PARTS IDENTIFICATION
3.2 Parts Callout NPS 3 to 6 | DN 80 to 150
ITEM DESCRIPTION
Body
Body Bolt
Body Face O-ring
DiscStem Assembly
Liner
Backup Liner
Packing
Lower Bushing
Bearing Strip
 Spring
 Atmospheric Seal
 O-ring
 O-ring
 Bearing Strip
 Spacer Washer
 Stem Bushing
 Stub Shaft
 Stopper
 Retaining Ring
 Stem Spacer
 Bottom Plate
 Hex Bolt
 Name Plate
 Drive Screw
7
8
9
27
10
14
11
13
12
19
1
30, 31
3
5
1
2
7
15
16
17
10
18
19
28
29
6
3
4
ASSEMBLY

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
7 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
3.0 PARTS IDENTIFICATION
3.3 Parts Callout NPS 8 to 12 | DN 200 to 300
ITEM DESCRIPTION
Body
Body Bolt
Body Face O-ring
DiscStem Assembly
Liner
Backup Liner
Packing
Lower Bushing
Bearing Strip
 Spring
 Atmospheric Seal
 O-ring
 O-ring
 Bearing Strip
 Stopper
 Retaining Ring
 Stem Spacer
 Bottom Plate
 Hex Bolt
 Name Plate
 Drive Screw
19
12
13
11
14
10
27
8
9
7
29
28
19
18
10
8
7
9
3
5
1
2
6
3
4
1
30, 31
ASSEMBLY

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
8 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
3.0 PARTS IDENTIFICATION
3.4 Parts Callout NPS 14 to 24 | DN 350 to 600
ITEM DESCRIPTION
Body
Body Bolt
Body Face O-ring
DiscStem Assembly
Liner
Backup Liner
 Sleeve Bearing
 Sleeve Bearing
 O-ring
 Washer
 Garter Spring
 Spring Carrier
 Key
 Name Plate
 Drive Screw
1
30, 31
23
5
3
24
25
21
20
1
2
4
24
25
21
20
23
6
3
26
22

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
9 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
4.0 SHIPMENT, HANDLING, AND STORAGE
4.1 All Bray PFA lined valves are shipped with polyethylene or wooden
flange protectors securely fastened to the valve bodies. The valves
may also be wrapped in a polyethylene or “shrink wrap” plastic,
depending on what valve model was ordered.
NOTICE
It is very important that the PFA surfaces of the valve (both the
liner and disc/stem) be protected prior to installation. The flange
protectors should remain fastened to the valves, until just prior to
installation.
4.2 Use care when handling the valve. Do not drop or throw down the
valves, as damage to the PFA could result. PFA oers the highest
resistance to corrosion (in the pipeline), but can be damaged
prior to installation by improper handling. Do not contact the
PFA surfaces with any sharp or blunt object (knives, box cutters,
screwdrivers, punches, etc.) as damage to the PFA could occur.
4.3 The disc should be placed in the partially open position
(approximately 10 to 15 degrees open) during storage when
possible. Valves with spring return actuators can be stored prior
to installation as-is. Extra precautions should be taken with a
fail-open assembly to protect the open position disc.
4.4 Valves should be preferably stored indoors in a safe (clean and
dry) environment, in or on their original shipping container
or pallet prior to installation. Store away from any workshop
activities such as grinding, sand blasting, welding or painting,
for example.
4.5 Ship and store the valves so that no heavy loads are applied to
the valve bodies.
4.6 When moving the valves, use nylon straps around the valve
neck or use lifting eyes attached to body lugs. Never lift a gear
operated valve by the handwheel. (Figure 01)

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
10 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
4.7 Lifting
WARNING
A potential hazard exists with handling valves. Failure to handle
valves properly may cause a valve to shift, slip, or fall — causing
serious injury or death and/or equipment damage.
NOTICE
The following information is for reference purposes only.
> Always use safe and proper techniques for lifting and support.
> Lift with properly rated lifting equipment.
> DO NOT lift valves with any adjoining pipe or other equipment
attached.
> Follow jurisdictional safety requirements.
INCORRECT
Straps through
seat opening.
CORRECT
Straps around
body or neck.
INCORRECT
Straps around
actuator body.
CORRECT
Straps around
body or neck.
INCORRECT
Straps through
seat opening.
CORRECT
Straps around
body.
INCORRECT
Straps through
gear handwheel.
CORRECT
Chains with
lifting lugs.
Figure 01: Approved lifting configurations.
NOTES:
> Keep body level when lifting.
> Ensure strap is secure around valve.
> Ensure strap is not twisted.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
11 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
5.0 INSTALLATION CONSIDERATIONS, PIPING AND VALVE
ORIENTATION AND PLACEMENT
CAUTION
It is very important before installation to ensure the critical
chordal dimension of the disc at the full open position is less than
the adjacent pipe flange I.D.
Before Installation
> Verify that pipeline flanges are free from metallic chips and
weld splatter.
> Verify that pipeline flanges are located on the same centerline
and are parallel.
> Verify flange facing flatness is as follows:
– ≤0.004 inches on a 4 inch length for valves ≤NPS 4 in size
– ≤0.008 inches on a 4 inch length for valves ≥NPS 5 in size
> Verify that the flange face finish is ≤250 micro-inch roughness.
> Verify that the inside diameter of pipeline flanges is in
accordance with Bray documentation. This is necessary to
prevent any valve disc/pipeline flange contact upon valve
opening. (Table 01).
Inside Diameters (NPS)
Valve Size Ø Minimum Ø Maximum
NPS (inches) (inches)
 
  
 
 
 
 
 
  
  
  
  
  
  
  
Inside Diameters (DN)
Valve Size Ø Minimum Ø Maximum
DN (mm) (mm)
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Table 01: ISO Series Flange Inside Diameters

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
12 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
5.1 Piping and Flange Compatibilities
5.1.1 Piping
These valves have been engineered so that the critical disc
chordal dimension at the full open position will clear the adjacent
inside diameter of most types of piping, including Schedule 40,
lined pipe, heavy wall, etc.
Note: It is important to verify valve disc clearance with adjacent
piping prior to installation.
5.1.2 Metal Flanges
Bray’s PFA lined butterfly valves have been designed to be
suitable for all types of flanges (ASME, DIN, JIS and other
international flange standards), whether flat-faced, raised
face, slip-on, weld-neck, etc. Proper alignment of any butterfly
valve between flanges is critical to good performance of the
valve. The flange bolts must also be evenly tightened around
the circumference of the valve, providing consistent flange
compression of the molded profile on the seat face.
Note: A uniform flange face is critical to proper valve sealing.
Most weld-neck and slip-on flanges conforming to ASME
specifications have an appropriate flange face.
5.1.3 Non-Metallic Flanges
When non-metallic flanges, such as plastic or PVC, are used with
PFA lined butterfly valves, care must be taken not to over-tighten
the flange bolts. The inherent flexibility of these non-metallic
flange materials allow them to be over-tightened relatively easily.
Flexing caused by this overtightening can actually reduce the
compression of the valve between the flanges, causing leaks
between the valve and the flange face. Proper alignment and firm,
even, but not excessive tightening of flange bolts is especially
important with non-metallic flanges. In some cases, nonmetallic
flanges of low quality will not mate tightly with butterfly valves,
regardless of the care taken during installation.
Note: If PFA lined butterfly valves are installed between
non-metallic flanges (FRP for example), follow the flange
manufacturer’s recommended maximum bolt torque.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
13 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
5.2 Valves with Spring Return Actuators
5.2.1 Fail Closed Assemblies
If the valve is supplied with an actuator, the butterfly valve is
shipped in the full closed position (as no air pressure is present to
compress the springs and open the disc).
5.2.2 Fail Open Assemblies
If the valve is supplied with an actuator, the butterfly valve disc
is shipped in the full open position (as no air pressure is present
to compress the springs and close the valve disc.) The sealing
surface, or disc edge, is therefore exposed. Damage to disc edge
or liner may cause leakage.
CAUTION
Use caution installing the valve, being careful not to damage the
disc edge. It is recommended to:
> Remove the actuator. Be sure to scribe the valve and actuator
to ensure the re-installed actuator is in the exact same
quadrant as originally configured.
> Rotate disc to the closed position.
> Install the valve per the attached installation tag instructions.
> Rotate disc to fully open position.
> Re-install the actuator ensuring it is in the proper quadrant.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
14 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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INCORRECT
Sediment buildup around
lower disc and hub.
CORRECT
Sediment passes under disc.
Figure 02: Valve orientation for media with sediment.
5.3 Valve Location
5.3.1 PFA lined butterfly valves should be installed, if possible, a
minimum of six pipe diameters from other line elements, i.e.,
elbows, pumps, valves, etc. When six pipe diameters are not
practical, it is important to achieve as much straight pipe distance
as possible.
5.3.2 Where the PFA lined butterfly valve is connected to a check valve
or pump, use an expansion joint between them to ensure the disc
does not interfere with the adjacent equipment.
5.4 Valve Orientation
5.4.1 In general, Bray recommends PFA lined valves be installed with
the stem in the vertical position and the actuator mounted
directly above the valve; however, there are those applications as
discussed below where the stem should be horizontal.
5.4.2 For slurries, sludge, mine tailing, pulp stock, dry cement, and any
media with sediment or particles, Bray recommends the PFA
lined valve be installed with the stem in the horizontal position
with the lower disc edge opening in the downstream direction.
(Figure 02)
Valve Stem
(Vertical)
Valve Stem
(Horizontal)

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
15 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
Valve Orientation (continued)
5.4.3 Butterfly valve located at the discharge of a pump should be oriented as follows:
Figure 03: Centrifugal pump (with pump shaft horizontal).
Figure 04: Centrifugal pump (with pump shaft vertical).
Figure 05: Axial pump (with pump shaft vertical).
INCORRECT
Valve stem horizontal.
INCORRECT
Valve stem vertical.
CORRECT
Valve stem vertical.
CORRECT
Valve stem horizontal.
INCORRECT
Valve stem horizontal.
CORRECT
Valve stem vertical.
Suction Suction
Pump Shaft
(Vertical)
Pump Shaft
(Vertical)
Pump Shaft
(Vertical)
Pump Shaft
(Vertical)
Suction Suction
Valve Stem
(Vertical)
Valve Stem
(Horizontal)
Valve Stem
(Vertical)
Valve Stem
(Horizontal)
Pump Shaft
(Horizontal)
Pump Shaft
(Horizontal)
Valve Stem
(Horizontal)
Valve Stem
(Vertical)

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
16 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
Valve Orientation (continued)
5.4.4 Butterfly valve located downstream of a bend or reducer should be oriented as follows:
Figure 06: Bend.
Figure 07: Te e.
Figure 08: Reducer.
INCORRECT
Valve stem horizontal.
INCORRECT
Valve stem horizontal.
INCORRECT
Valve stem horizontal.
CORRECT
Valve stem vertical.
CORRECT
Valve stem vertical.
CORRECT
Valve stem vertical.
Valve Stem
(Horizontal)
Valve Stem
(Horizontal)
Valve Stem
(Horizontal)
Valve Stem
(Vertical)
Valve Stem
(Vertical)
Valve Stem
(Vertical)

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
17 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
Valve Orientation (continued)
5.4.5 Butterfly valves in combination for control/isolation applications should be installed as follows:
Figure 09: Control/Isolation combination.
INCORRECT
Combination with all valve stems in the same
direction accelerates possible noise, vibration,
and erosion problems.
CORRECT
Combination with the stem of the control valve
at right angle to those of other valves tends to
cancel the drift of the fluid, and reduces noise,
vibration, and erosion.
Isolation Control Isolation Isolation Control Isolation

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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Figure 10: Spread flanges apart for valve clearance.
INCORRECT
Pipe not spread; disc opened
beyond valve body face.
Results: Disc edge damaged
when it hits pipe flange.
CORRECT
Pipe spread and aligned; disc
rotated within body face.
Results: No undesirable
beginning seating/unseating
torque; disc edge protected.
6.0 INSTALLATION PROCEDURE
6.1 General Installation
6.1.1 Make sure the pipeline and pipe flange faces are clean. Any
foreign material such as pipe scale, metal chips, welding slag,
welding rods, etc., can obstruct disc movement or damage the
disc or liner.
6.1.2 The PFA liner extends over the face of the valve body and functions
as the flange gasket. Additional gaskets are not normally required
in installations where the flange strength allows maximum bolting
torque (steel and alloy flanges for example). If sucient bolting
torque cannot be achieved due to flange type or material strength
limits (FRP for example), a gasket may be required for proper flange
sealing. Gaskets may be used when pipeline flange faces exhibit
excess unevenness due to poor machining or weld distortion.
6.1.3 Ensure that the valve disc has been positioned to a partially
open position (approximately 10° open) with the disc edge
about ½ to ⅜ inch (13 to 10 mm) inside the face of the seat.
Note: See Section 5.2 for special consideration for valves with
spring return actuators.
6.1.4 Align the piping, then spread the pipe flanges a distance apart
to permit the valve body to be easily placed between the flanges
without contacting the pipe flanges. (Figure 10)
WARNING
Never pick up a valve, actuator, or gear assembly by the actuator
or gear. Instead, use the valve locating holes, or nylon straps
around the neck of the valve to pick up the entire assembly.

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
19 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
Figure 11: Insert and center valve.
INCORRECT
Piping misaligned.
Results: Disc O.D. strikes
pipe I.D. causing disc edge
damage, increased torque,
and leakage.
CORRECT
Piping aligned properly
when bolts tightened; disc
in full open position.
Results: Disc clears adjacent
pipe I.D.; liner face seals
properly; no excessive initial
torque.
Figure 12: Check for proper alignment of valve and flanges.
6.1.5 Insert the valve between the flanges, taking care not to damage
the liner faces. Install flange bolts or studs to center the valve,
but do not tighten, ensuring the disc has clearance for centering.
(Figure 11)
6.1.6 To check for proper alignment, carefully open the disc to the full
open position, making sure the disc does not hit the adjacent
pipe I.D. (Figure 12)

ACRIS® SERIES 24/25 PFA LINED BUTTERFLY VALVE
Installation, Operation, and Maintenance Manual
20 of 25© 2023 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
6.1.7 Now systematically remove jack bolts or other flange spreaders,
and hand-tighten the flange bolts.
6.1.8 Very slowly close the valve disc to ensure disc edge clearance
from the adjacent pipe flange I.D.
6.1.9 Open the disc to full open, then tighten all flange bolts per
specification as shown in Table 02 and Figure 13.
6.1.10 Finally, repeat a full close to full open rotation of the disc to
ensure proper clearances.
Valve Size Maximum Torque
NPS lbf-ft

 





 
 
 
 
 
 
 
Valve Size Maximum Torque
DN N m
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table 02: Flange Bolt Tightening Torque Figure 13: Flange Bolt
Tightening Pattern.
Notes:
1 Maximum bolt torques shown for steel or alloy flanges. If installed between non-metallic
flanges (FRP for example), follow the flange manufacturer’s recommnded bolt torque.
5
2
8
3
4
7
1
6