Bray TRI LOK Instruction manual

The Ultimate Critical Service Triple Offset Valve
INSTALLATION, OPERATION &
MAINTENANCE MANUAL

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1
IOM
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Operation and Maintenance Manual
Table of Contents Page
1.0 Introduction 2
2.0 Safety Information 2
2.1 Definition of Terms 2
2.2 ATEX Directive 94/9/EC 2
2.2.1 Marking 3
2.2.2 Special Conditions for Safe Use 3
3.0 Installation 4
Table 1 Minimum Allowable Pipe ID for Tri Lok Installation 4
4.0 Long Term Storage 5
5.0 Handling Requirements 5
6.0 Recommended Lubricants 5
7.0 Travel Stop Setting Instructions 6
Class 150/300
8.0 Valve Part Diagram - Class 150, 300 7
9.0 Standard Maintenance for Class 150 and 300 Valves 8
9.1 Packing Replacement 8
9.2 Seat Replacement 9
9.3 Seal ring Replacement 10
9.4 Bottom Flange Gasket Replacement 11
Table 2 Torque Values for Gland Retaining Nuts 12
Table 3 Torque Values for Seat Retaining Cap Screws and Seal Ring Retaining Flange Cap Screws 12
Class 600/900
10.0 Valve Parts Diagram - Class 600, 900 13
11.0 Standard Maintenance For Class 600 and 900 Valves 14
11.1 Packing Replacement 14
11.2 Seat Replacement 15
11.3 Seal Ring Replacement 15
11.4 Bottom Flange Gasket Replacement 16
Table 4 Torque Values for Seal Ring Retaining Flange Cap Screws 16
Table 5 Torque Values for Seat Retaining Flange Cap Screws 17
Table 6 Torque Values for Gland Retaining Cap Nuts 17
Table 7 Torque Values for Bottom Flange Screws 17
12.0 Tri Lok Troubleshooting Guide 18

2IOM
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Operation and Maintenance Manual
2.2 ATEX Directive 94/9/EC
WARNING
When using this product in hazardous environments, the
national directives and laws which apply in your country
for hazardous areas must be followed. The specifications
of the examination certificate valid in country of opera-
tion must be also observed.
2.2.1 Marking
Certificate Number: LRVL 10ATEX0003X
Certification Code:
Non-Mining Applications
0038 II 1 G c
Mining Applications
0038 I M1 c
Ambient Range: TX See Special Conditions for
Safe Use
Serial Number: As appropriate
Year of Manufacture:
Warnings:
!
1.0 Introduction
Information provided in this manual is for standard
Tri Lok conguration only. Specic instructions for
non-standard materials of construction, temperature
range, etc… should be referred to the factory.
This manual covers Tri Lok valves in the following range:
ASME
Classes Sizes Body Style
150, 300, 600
and 900
3” - 48”
(80mm - 1200mm)
Wafer
Lug
Double Flange
Buttweld
The Tri Lok metal seated valve is fully rated to ASME
B16.34, and complies with API 609.
Tri Lok is torque-seated. Torque must be continually
applied by an actuation device (manual gearbox or power
valve actuator) to the valve stem to ensure the valve seals
against the line pressure.
!
WARNING
Do not remove or de-energize actuation devices while
the valve is under line pressure.
The valve is inherently re safe, and has been qualied to
ISO 10497 and API 607 sixth edition standards.
The preferred direction of valve installation is with the
upstream line pressure on the stem side and the body seat
on the downstream side.
The preferred direction of ow is indicated by an arrow
on the valve nameplate.
2.0 Safety Information
2.1 Definition of Terms
WARNING
indicates a potentially hazardous
situation which, if not avoided,
could result in death or serious in-
jury.
CAUTION
indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury.
NOTICE
used without the safety alert symbol
indicates a potential situation
which, if not avoided, may result
in an undesirable result or state,
including property damage.
!
!

3
IOM
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Operation and Maintenance Manual
2.2.2 Special Conditions for Safe Use
The following factors must be carefully considered in order
to ensure the valve is compatible with the atmosphere
in which it is applied. The system designer and/or end
user should formally address each item and carefully
document the reasoning behind specic measures taken
to ensure continued compliance throughout the life of
the Tri Lok valve.
Material Considerations
Titanium is not to be used in Group I mining applications
due to the potential of ignition from sparks caused by
mechanical impacts. Please consult factory for details
regarding material limitations.
Temperature Considerations
The surface temperature of the Tri Lok valve is wholly
dependent on the ambient temperature in combination
with the temperature of the process medium. The
maximum surface temperature of the Tri Lok valve may
be calculated from the maximum ambient temperature
plus the maximum process medium temperature as
shown below:
Equation 1 - Surface Temperature Calculation
Ts(max) = Ta(max) + Tp(max)
The system designer is responsible for ensuring the
maximum temperature, either inside the valve body or on
the external surface, will remain well below the ignition
temperature of the atmosphere. Additional protective
devices may be required to ensure a sufcient thermal
safety margin, including but not limited to: thermal
shut-off devices and cooling devices.
For operating temperatures above 200° C (392°F) Bray
recommends thermal insulation of the valve body.
Static Electricity Considerations
Where the process medium is a liquid or semi-
solid material with a surface resistance in excess of
1 G-ohms, special precautions should be taken to ensure
the process does not generate electro-static discharge.
This may be done through ensuring the ow rate of
the process media remains below 1 m/s or provid-
ing sufcient discharge points along the process path
to eliminate electrostatic build-up. Consultation to
EN 50404 is recommended.
Appropriate grounding may be necessary through the
use of grounding straps or other means.
Stray Electric Current Considerations
When the Tri Lok valve is used near sources of high
current or magnetic radiation, a secure bonding to earth
ground should be made so as to prevent ignition due
to inductive currents or a rise in temperature due to
these currents.

A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
4O & M
Notes for Table 1
• Minimum allowable ID of pipe with recommended clearances (per API 609).
• This table assumes that the valve is centered in the pipe flanges.
• A minimum of 1/16” (1.6 mm) thick gasket is used between the pipe flange and the
face of the valve body.
3.0 Installation
1. Tri Lok is designed to be installed between ASME
B16.5, B16.47 or ISO 7005 anges. When the valve
is open, a portion of the disc may protrude into the
pipe. Wafer and lug congurations will protrude on
both sides of the valve. In the double ange version
and some gate sizes, the open disc may protrude into
the pipe on the seat side of the valve. Adjacent piping
must be large enough to allow the open disc to clear
the pipe.
Table 1 shows the minimum allowable pipe ID. In
general, Class 150 valves will clear Schedule 40 pipe
and Class 300 will clear Schedule 80 pipe without
interference.
2. The valve closes with clockwise rotation of the stem
and opens with counterclockwise rotation.
!
CAUTION
Avoid uncontrolled rotation of the disc beyond fully-
open position (counterclockwise) as this could damage
the sealing surfaces.
3. To benet from the most favorable low operating
torque and best sealing conditions, install the valve
with the stem on the upstream (pressure side) of the
installation. The valve tag is marked with an arrow
indicating the preferred direction of ow.
4. Whenever possible, install with the stem horizontal.
If this installation is not possible, orient the stem at an
inclined angle with the actuator above the horizontal
centerline. This will prevent debris from accumulating
in the bearing area. With the valve stem horizontal,
the weight of the disc will be supported along the
full length of the bearing journals; thus minimizing
operational wear.
5. Flange gaskets should conform to the requirements
of ASME B16.20 (supersedes API Standard 601) for
ASME B16.5 anges. Spiral wound gaskets conform-
ing to ASME B16.20 are recommended.
6. When bolting the valve into the line, use standard
bolting torque as recommended by applicable piping
standards. The valve body seat is independent of the
ange bolting. Additional force from the ange bolts
is not required.
Table 1
Minimum Allowable Pipe ID for Tri Lok Installation
Valve/Pipe
Size
Minimum Pipe ID
Class 150 Class 300
In mm In mm In mm
3 80 2.3 51 2.3 51
4 100 3.3 78 3.3 78
6 150 5.3 128 5.1 121
8 200 7.0 172 6.8 165
10 250 8.9 221 8.9 219
12 300 10.9 270 10.9 277
14 350 12.1 300 11.6 294
16 400 14.1 350 13.5 335
18 450 15.9 392 15.3 381
20 500 17.7 450 17.1 427
24 600 21.5 540 21.1 267
30 750 26.9 684 26.7 677
32 800 29.1 740 – –
36 900 33.1 841 32.6 828
40 1000 36.6 929 – –
42 1050 38.7 982 37.5 951
48 1200 44.6 1134 43.2 1096

5
IOM
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Operation and Maintenance Manual
5.0 Handling Requirements
Packed Valves
1. Crates: Lifting and handling of the packed valves
in crates will be carried out by a fork lift truck, by
means of the appropriate fork hitches.
2. Cases: The lifting of packed valves in cases will
be carried out in the lifting points and in the center
of gravity position which have been marked. The
transportation of all packed material must be carried
out safely and following the local safety regulations.
Unpacked Valves
1. Lifting and handling of valves should be carried
out by using appropriate means and observing the
carrying limits. Handling must be carried out on
pallets, protecting all machined surfaces to avoid
any damage.
2. With large bore valves, rigging the load must be
carried out by using the appropriate tools to prevent
the valve from falling or moving during the lifting
and handling.
4.0 Long Term Storage
If valves are to be stored before installation, storage
must be carried out in a controlled manner as follows:
1. Valves must be stored in a closed, clean and dry
environment.
2. Valve disc to be in closed position and the body
end faces must be covered with appropriate ange
protection.
3. Periodically, the valves should be checked to ensure
the above conditions are maintained.
4. These are general guidelines for valve storage.
Please consult the factory for information regarding
specic requirements.
CAUTION
For valve handling and/or lifting, the lifting equipment
(fasteners, hooks, etc.) must be sized and selected while
taking into account the valve weight indicated in our
packing list and/or delivery note. Lifting and handling
must be made only by qualified personnel.
Fasteners must be protected by plastic covers in sharp
corner areas.
Caution must be taken during the handling to avoid
this equipment passing over the workers or over any
other place where a possible fall could cause injury or
damage. In any case, local safety regulations must be
respected.
!
6.0 Recommended Lubricants
Molykote® Plus CU-7439 (grease) or equivalent for
Fasteners
Molykote® Spray 321 R (dry lubricant) or
equivalent for Disc Seal Ring
Light Mineral Oil for Packing and Gasket interface
areas (Disc Seal Ring and gasket grooves)

A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
6
O & M 6 O & M
7.0 Travel Stop Setting Instructions
Preface
Tri Lok is a quarter turn, metal-seated valve. There is
no mechanical stop in the valve at the “closed” position.
Purpose
The following travel stop-setting instructions are
designed to provide a maintenance or service person
clear direction and procedures for executing these
important adjustments.
Methodology
When installing ANY type of actuator on a Tri Lok
valve, the following general instructions should be
followed closely. These general instructions include all
actuation types: manual gear, pneumatic, hydraulic and
electric actuators.
A. Select a desired orientation for the actuator
mounting relative to the valve. The disc should be
oriented with the disc indicator marked on the stem.
B. Rotate BOTH valve and actuator to either the full
“open” or full “closed” position to establish a
common reference point.
C. Mount actuator to the valve and secure.
!
CAUTION
Valves can be damaged if proper care is not exercised
during the setting of Open and /or Closed stops.
Actuator Stop Settings
The Tri Lok valve is a torque seated valve. During normal
operation, only the open mechanical stop on the actuator
should function. Set the opening stroke stop to stop the
disc rotation in the fully open (90°) position.
For safety reasons, the closed mechanical stop shall be
set as follows:
1. Unscrew the closing stroke mechanical stop.
2. Close the valve applying the correct end-to-close
torque required for the particular service. Check that
the mechanical stop is free.
3. Adjust mechanical stop until engagement.
4. Loosen the mechanical stop 1-1½ turns to ensure
there is enough travel for the valve to receive
the required torque and to protect the valve from
excessive torque.
5. Tighten the stop lock nut with the torque specified in
the actuator operating manual.
6. Mark the closing stop set position.
Notes:
• With valve/actuator in the closed position, it may be
necessary to loosen the “closed” mechanical stop to
allow the mounting holes to align properly.
• Special applications may require more specific
instructions. Please consult the factory for further
instruction.

7
IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
8.0 Valve Part Diagram - Class 150, 300
Sectional Drawing Standard Configuration Tri Lok Valve
Item Description
A1 Body
B1 Body seat (replaceable)
B2 Seat Gasket
B3 Seat Cap Screws
B4 Seat Retainer
B5 Seat retainer ring
B6 Seat Lower Dowel Fastener
B7 Seat Upper Dowel Fastener
B8 Seat Alignment Button
C1 Disc
C2 Seal ring
C3 Disc Seal Gasket
C4 Seal Ring Retainer
C5 Seal Ring Retainer Cap Screws
C6 Seal Ring Retainer Washers
C7 Disc Spacer
D1 Stem
E1 Upper/Lower Stem Bearing
E2 Bearing Protector
E3 Upper Spacer
E4 Lower Spacer
G1 Bottom Plate / Plug
G2 Bottom Plate Gasket
G3 Bottom Plate Cap Screws
H1 Gland Ring
H2 Packing
H3 Gland Retainer
H4 Anti Blow-Out
Retaining Ring / Split Ring
H5 Gland Ring Stud Bolts
H6 Gland Ring Lock Washer
H7 Gland Ring Nuts
H8 Gland Ring Belleville Washer
H9 Grounding Washer
H10 Thrust Washer Packing
M1 Mounting Plate
M2 Mounting Plate Cap Screws
M3 Mounting Plate Lock Washer
M4 Mounting Plate Alignment Pin
N1 Identification Tag
N2 Drive Screws
P1 Stem Keys
MOUNTING BRACKET
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
SEAT
Double Flange - Lug - Wafer
SEAT
Buttweld DISC & SEAL
BOTTOM FLANGE
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
UPPER /LOWER BEARING
M1
M1
M2
A1
P1
D1 H4
H3
H1
H2
E3
H5
H7
H6
H8
E1
C1
E1
G2
E2 E1 C7
E4 G1
G3
M3 M2 H10 M4
B1 B3 B2 B1 B4 B6 B7 B5 B8 C6 C5 C4 C2 C3

8IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
9.0 Standard Maintenance for Class 150 and 300 Valves
WARNING
Precautions should be taken before beginning any work
on the valve assembly.
Protective clothing, as required by appropriate safety
codes, should be worn.
Relieve line pressure and close valve before:
• Removing any actuation
• Loosening any packing gland nuts
Do not pressurize the line without an actuation device
properly installed and working on the valve.
CAUTION
The Tri Lok valve must be in the closed position to be
removed from the line to prevent damaging the disc
seal ring.
1. When replacing the seat and/or seal ring in a dead-
end service, or with the piping on the body seat side
removed, depressurize the line and partially open the
disc before loosening any of the valve trim fasteners.
2. Clean the valve, removing any grit or scale. When
handling, care should be taken not to scratch the seal
ring, seat and gasket faces on both sides of the valve.
3. Replacement seat, disc seal ring, and other parts are
available from authorized Tri Lok sales and service
locations.
9.1 Packing Replacement
Refer to parts diagram for parts identification by
reference numbers. (Pg. 7)
1. If the valve is installed, relieve line pressure. Remove
actuator from the valve. Remove socket head cap
screws and lock washers (M2 & M3). Remove
mounting bracket or mounting plate (M1), depending
on valve size. Note assembly positions of the actuator
and the mounting hardware for reinstallation.
2. Remove packing gland retainer nuts (H7) and lock
washers (H6). Remove gland retainer (H3), anti-
blowout retaining ring/split ring (H4) and gland
ring (H1).
3. Remove all packing (H2), taking care not to scratch
the stem or the bore of the valve body. Do not remove
the thrust washer (H10) unless further valve disas-
sembly is required.
4. Examine the valve body packing bore and the stem
surface. Clean as necessary to remove any corrosion,
foreign matter and minor surface imperfections.
5. Apply a small amount of grease to the stem end. Install
new packing rings (H2) in valve body packing bore
one at a time. Install the new packing rings (H2) into
the stufng box one at time. First the external ring
(H2), then internal rings (H2) and last the second
external ring (H2).
6. Reinstall gland ring (H1), anti-blowout retaining ring
(H4) and gland retainer (H3). Re-install lock washers
(H6) and nuts (H7). Tighten gland nuts (H7) utilizing
a cross bolting technique to the proper torque value
given in Table 2 (pg. 12).
7. Reinstall mounting bracket or mounting plate (M1)
with cap screws and lock washers (M2 & M3).
Remount actuation device on top of the valve.
8. Operate the valve open and closed several times to
check for binding and to set the seal rings. Loosen
gland nuts (H7) and retighten, utilizing a cross bolting
technique, to torque value given in Table 2 (pg. 12).
9. Install the stem and key(s). Then mount actuator,
paying attention that the actuator is properly oriented.
!
!

9
IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
9.2 Seat Replacement
Refer to parts diagram. (Pg. 7)
It is highly recommended that both the seat (B1) and
seal ring (C2) be replaced at the same time. However,
individual components are not matched in pairs; and may
be replaced separately if desired.
!
CAUTION
Exercise extra care when handling the seat and disc seal
ring to avoid damage to the sealing surfaces.
1. Close the valve and remove the actuator. Place the
valve on a at stable surface with the body seat
(B1) facing up.
2. Carefully clean the surface of the seat and remove all
foreign matter from the hex sockets of seat retaining
cap screws (B3). Use compressed air to blow out the
gap between the seat OD and the wall of the retaining
cavity in valve body (A1).Apply a suitable penetrant
into the gap between the seat OD (B1) and the body
(A1) to help in extracting the seat (B1) from the
body cavity.
3. Using a wrench, remove all seat retainer socket
cap screws (B3).
4. Using a hardwood or aluminum drift and a light ham-
mer, tap the top of the seat (B1) lightly all around to
loosen the seat in the retaining cavity.
5. Using full-threaded bolts or suitable threaded rod
matched tothe threads inalltapped jacking holes,begin
jacking the seat (B1) evenly out from the retaining
cavity. Tap the seat lightly with the drift as necessary
to keep it in alignment with the walls of the retaining
cavity in the body (A1). Remove the seat (B1) from
the body (A1).
6. Using non-abrasive tools, carefully clean any
remnants of old gasket and foreign matter within
the retaining cavity. Blow out all threaded holes and
gasket grooves with compressed air.
7. Remove the seal ring retainer screws (C5) and lock
washers (C6) from seal ring retainer (C4). Remove
disc seal ring retainer (C4). If the old seal ring (C2)
is to be reinstalled, extract it carefully. Wipe the seal
ring (C2) clean, removing all remnants of old gasket
and foreign matter. Place the old seal ring (C2) aside
for reinstallation.
8. Using soft tools and a suitable wire brush, carefully
clean any remnants of old gasket and foreign matter
from the face of the disc (C1). Blow out all threaded
holes and the gasket groove with compressed air.
9. Place a new disc gasket (C3) into the groove on the
disc face (C1). The mating side of the disc gasket
may be lightly greased to improve retention in the
groove. Place the seal ring (C2) onto the disc, making
sure the alignment line on the seal ring matches the
locating dimple in disc face. Place the seal retainer
(C4) over the seal ring. Apply anti-seize compound
to the seal ring retainer cap screws (C5). Install all
disc seal ring retainer cap screws (C5) with lock
washers (C6). The seal retaining ange cap screws
(C5) should be fully threaded into the disc (C1), but
remain only nger-tight at this time. Open the valve
to approximately 20°.
10. Place the seat gasket (B2) into the groove of the seat
(B1). It is highly recommended to apply grease to
the mating side of the seat gasket to secure its posi-
tion in the groove. Apply a suitable lubricant to the
sealing surfaces of the seat (B1) and seal ring (C2).
Insert the seat (B1) into the body (A1) making sure
the alignment dimples in the seat (B1) and the retain-
ing cavity in the body (A1) match. Apply anti-seize
compound to seat retaining cap screws (B3) and
install the screws (B3) nger-tight.
11. Verify that all four alignment marks match (body,
seat, seal ring and seal ring retainer) and then tighten
the seat retainer cap screws (B3) evenly and rmly
using a cross bolting technique to the torque specied
in Table 3 (Pg. 12).
12. Lubricate the sealing surfaces of the seal ring (C2)
and the seat (B1). Using a suitable actuator, close
and open the valve 2-3 times, only closing the valve
to the point where the seal ring engages with the
seat. Check each time that the disc seal ring makes
full contact without torquing into the seat. Attention
should be paid in the closing stroke that the seat does
not scratch the seal ring. This will allow the seal ring
and seat to be properly aligned.

10 IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
13. Close the valve. Tighten at least four screws in the
seal ring retainer to prevent the seal ring from fur-
ther movement. Open the valve approximately ve
degrees. Tighten all seal ring retainer screws (C5)
using a cross bolting technique, to the torque speci-
ed in Table 3 (Pg. 12).
14. Re-apply lubricant to the sealing surfaces of the
valve. Reinstall actuation device and test the valve.
9.3 Seal Ring Replacement
Refer to parts diagram. (Pg. 7)
!
CAUTION
Exercise extra care when handling the seat and seal ring
to avoid damage to the sealing surfaces.
The seal ring (C2) may be replaced in two ways: without
removing the seat (B1); or replacing the seal ring (C2)
with the seat (B1) removed.
To remove the seal ring (C2) without removing the seat
(B1), the actuation device must be removed and the valve
oriented in a manner that allows access to both sides. This
procedure is not suitable if the seal ring (C2) is to be
replaced while the valve is installed in the pipeline. In
addition, this procedure is not recommended for large
valves where manipulating the valve may be more
difcult than removing the seat (B1) and installing
the seal ring (C2) solely from the seat side of the body.
Seal ring replacement with the seat in
the valve:
1. Remove valve from the pipeline. Remove the actua-
tor from the valve.
2. Clean the surface of the valve with compressed air,
blow out all debris around the seal ring retainer (C4)
and clean out the hex sockets of the seal ring retainer
cap screws (C5).
3. Loosen all seal ring retainer cap screws (C5), but
leave them in the valve with the seal ring retainer
(C4) attached to the disc (C1).
4. Using a wrench, rotate the valve stem (D1) counter-
clockwise past the fully open position far enough so
the disc is in a position to allow seal ring retainer and
seal ring removal (C2). Be careful not to over-rotate
the stem (D1) to the point where the seal ring (C2) or
disc edge (C1) contact the body (A1). Make sure the
packing gland retainer nuts (H7) are tight enough to
prevent the valve stem (D1) from rotating on its own
under the eccentric weight of the disc (C1).
5. Remove the seal ring retaining cap screws (C5) and
lock washers (C6), and extract disc seal ring retainer
(C4) and the seal ring (C2).
6. Rotate the disc (C1) as necessary to access the seal
face on the disc (C1). Using soft tools and suitable
wire brush, carefully clean any remnants of old gasket
and foreign matter from the face of the disc (C1).
Blow out all threaded holes and the gasket groove
with compressed air.
7. Rotate the disc (C1) to its previous position to fa-
cilitate installation of the seal ring (C2). Place a new
seal ring gasket (C3) into the groove on the disc face
(C1). The mating side of the seal ring gasket can be
lightly greased to improve retention in the groove.
Place the seal ring (C2) onto the disc (C1) making
sure the alignment line on the disc seal ring matches
the locating dimple on the disc face. Place the seal
ring retainer (C4) over the seal ring.Apply anti-seize
compound to the seal ring retainer cap screws (C5).
Install all seal ring retainer cap screws (C5) with
lock washers (C6). The cap screws (C5) should be
fully threaded into the disc (C1), but remain only
nger-tight at this time.
8. Lubricate (refer to lubrication table) the sealing
surfaces of the seal ring (C2) and the seat (B1). Us-
ing a suitable actuator, close and open the valve 2-3
times, only closing the valve to the point where the
seal ring engages the seat. Check each time that the
seal ring makes full contact without torquing into the
seat. Attention should be paid in the closing stroke
that the seat does not scratch the seal ring. This will
allow the seal ring and seat to be properly aligned.
9. Orient the valve with the seat side facing up. Verify
that all four alignment marks (body, seat, seal ring
and seal ring retainer) are aligned.

11
IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
10. Tighten the seal ring retainer cap screws (C5) using
a cross bolting technique to the torque specied in
Table 3 (Pg. 12).
11. Re-apply lubricant to the sealing surfaces of the valve.
Reinstall operator or actuator and test the valve.
Seal ring replacement with the seat
removed from the valve
This procedure follows the instructions for replacement
of the seat (B1) described above. If the old seat (B1)
is to be reused, exercise extra care when extracting it
from the retaining cavity in the valve body (A1). When
using jacking bolts to extract the seat, avoid forcing the
jack screws unevenly which could result in permanent
deformation of the seat (B1). If the old seat (B1) is to
be reused, make absolutely certain that the seat (B1)
slides out of the retaining cavity easily; in a balanced
and level manner.
9.4 Bottom Flange Gasket Replacement
Refer to parts diagram. (Pg. 7)
Bottom Plate/Plug
1. If the valve is installed, remove line pressure.
2. Completely remove the bottom plate screws (G3).
Remove the bottom plate (G1) and the bottom plate
gasket (G2).
3. Clean the bearing area of residual gasket and for-
eign materials. Grease the body/bottom plate gasket
groove area.
4. Place the new gasket (G2) on the bottom plate (G1)
and install it onto the body.
5. Reinstall the bottom plate screws (G3) and using a
cross bolting technique, tighten them according to
the torque specied in Table 3 (Pg. 12).
Bottom Plug
1. If the valve is installed, remove line pressure.
2. Remove the bottom plug (G1) and the bottom plug
gasket (G2).
3. Clean the bearing area of residual gasket and foreign
materials. Grease the body/bottom plug gasket area.
4. Place the new gasket (G2) on the bottom plug (G1)
and install it onto the body.
5. Tighten the bottom plug according to the torque
specied in Table 3 (Pg. 12).

12 IOM
ASME CLASS 150 & 300
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
Valve
Size
Class 150 Class 300
Seat Torque Seal Ring
Retainer Torque
Plug
Torque
Bottom Plate
Cap Screw
Torque
Seat Torque Seal Ring
Retainer Torque
Plug
Torque
Bottom Plate
Cap Screw
Torque
in mm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm
3 80 50 - 60 5.6 - 6.8 40 - 50 4.5 - 5.1 720 81 – – 50 - 60 5.6 - 6.8 40 - 50 4.5 - 5.1 720 81 – –
4 100 100 - 120 11.3 - 13.6 60 - 70 6.8 - 7.9 720 81 – – 100 - 120 11.3 - 13.6 60 - 70 6.8 - 7.9 720 81 – –
6 150 100 - 120 11.3 - 13.6 100 - 110 11.3 - 12.4 840 95 – – 170 - 180 19.2 - 20.3 110 - 120 12.4 - 13.6 960 110 – –
8 200 170 - 180 19.2 - 20.3 120 - 130 13.6 - 14.7 960 110 – – 300 - 320 33.9 - 36.2 160 - 180 18.1 - 20.3 1,080 122 – –
10 250 300 - 320 33.9 - 36.2 170 - 190 19.2 - 21.5 1,080 122 – – 300 - 320 33.9 - 36.2 210 - 230 23.7 - 26.0 1,440 163 – –
12 300 300 - 320 33.9 - 36.2 220 - 240 24.9 - 27.1 1,200 136 – – 300 - 320 33.9 - 36.2 230 - 250 26.0 - 28.2 – – 380 43
14 350 300 - 320 33.9 - 36.2 230 - 250 26.0 - 28.2 – – 380 43 500 - 530 56.5 - 59.9 320 - 340 36.2 - 38.4 – – 500 57
16 400 300 - 320 33.9 - 36.2 310 - 330 35.0 - 37.3 – – 500 57 500 - 530 56.5 - 59.9 360 - 380 40.7 - 42.9 – – 750 85
18 450 500 - 530 56.5 - 59.9 330 - 350 37.3 - 39.5 – – 750 85 500 - 530 56.5 - 59.9 440 - 470 49.7 - 53.1 – – 750 85
20 500 500 - 530 56.5 - 59.9 400 - 430 45.2 - 48.6 – – 750 85 800 - 840 90.4 - 94.9 470 - 500 53.1 - 56.5 – – 700 79
24 600 500 - 530 56.5 - 59.9 470 - 500 53.1 - 56.5 – – 700 79 800 - 840 90.4 - 94.9 540 - 570 61.0 - 64.4 – – 1,200 136
30 750 930-950 105 - 107 440 - 460 50 - 52 – – 1,200 136 990 - 1010 112 - 115 470 - 490 54 - 56 – – 1,600 181
32 800 990-1010 112 - 114 490 - 510 56 - 58 – – 1,200 136 – – – – – – – –
36 900 920-940 104 - 106 590 - 610 67 - 69 – – 1,600 181 990 - 1010 112 - 115 610 - 630 69 - 72 – – 1,600 181
40 1000 990-1010 112 - 114 510 - 530 58 - 60 – – 1,850 209 – – – – – – – –
42 1050 1040-1080 117 - 122 540 - 560 62 - 64 – – 1,850 209 1090 - 1110 124 - 126 550 - 570 63 - 65 – – 2,400 271
48 1200 1180-1210 133 - 137 590 - 610 67 - 69 – – 2,000 226 1190 - 1210 135 - 137 590 - 610 67 - 69 – – 2,200 249
Table 3
Torque Values For Seat Retaining Cap Screws and Seal Retainer Cap Screws
Valve Size Gland Nut Torque - Class 150 Gland Nut Torque - Class 300
in mm Lb-in. Nm Lb-in. Nm
3 80 35 4.0 45 5.1
4 100 35 4.0 45 5.1
6 150 45 5.1 65 7.3
8 200 45 5.1 80 9.0
10 250 65 7.3 100 11.3
12 300 65 7.3 100 11.3
14 350 80 9.0 125 14.1
16 400 80 11.3 150 16.9
18 450 100 11.3 150 16.9
20 500 100 11.3 150 16.9
24 600 100 16.9 200 22.6
30 750 650 73.4 1090 123.2
32 800 650 73.4 - -
36 900 850 96.0 1200 135.6
40 1000 1090 123.2 - -
42 1050 1090 123.2 1600 180.8
48 1200 1200 135.6 2100 237.3
Table 2
Torque Values for Gland Retaining Nuts

13
IOM
ASME CLASS 600 & 900
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
F1 F2
P1
M4
A1
G3 G1
G2
E1
E2
C1
M3
M2
M1
D1
H5
H7
H6 H1
H2
E3
E1
E2
C9 E2 E1 C5 C2 C7 C8 C6 C4 C3 B6 B4
B3
B5
B7
B1
B2
H4
H3
THRUST BEARING UPPER / LOWER BEARING DISC - SEAL - SEAT
1
Item Description
A1 Body
B1 Replaceable Seat
B2 Seat Gasket
B3 Seat Retainer
B4 Seat Retainer Ring
B5 Seat Lower Dowel Fastener
B6 Seat Upper Dowel Fastener
B7 Seat Alignment Button
C1 Disc
C2 Seal Ring
C3 Seal Ring Collar
C4 Seal Ring Collar Pin
C5 Seal Ring Gasket
C6 Seal Ring Reference Button
C7 Seal Ring Retainer
C8 Seal Ring Retainer Cap Screws
C9 Disc Spacer
D1 Stem
E1 Upper/Lower Stem Bearing
E2 Bearing Protector
E3 Upper Spacer
F1 Thrust Bearing
F2 Thrust Bearing Washer
G1 Bottom Plate
G2 Bottom Plate Gasket
G3 Bottom Plate Cap Screws
H1 Gland Ring
H2 Packing
H3 Gland Retainer
H4 Anti Blow-Out
Retaining Ring / Split Ring
H5 Gland Ring Stud Bolts
H6 Gland Ring Lock Washer
H7 Gland Ring Nuts
M1 Mounting Plate
M2 Mounting Cap Screws
M3 Mounting Lock Washer
M4 Mounting Alignment Pin
N1 Identification Tag
N2 Drive Screws
P1 Stem Keys
10.0 Valve Parts Diagram - Class 600, 900
Sectional Drawing Standard Configuration Tri Lok Valve
1. Disc - Seal - Seat illustrations depict bolted and push designs

14 IOM
ASME CLASS 600 & 900
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
11.0 Standard Maintenance For Class 600 and 900 Valves
WARNING
Precautions should be taken before beginning any work
on the valve assembly.
Protective clothing, as required by appropriate safety
codes, should be worn.
Relieve line pressure and close valve before:
• Removing any actuation
• Loosening any packing gland nuts
Do not pressurize the line without an actuation device
properly installed and working on the valve.
CAUTION
The Tri Lok valve must be in the closed position to be
removed from the line to prevent damaging the disc
seal ring.
1. When replacing the seat and/or seal ring in a dead-
end service, or with the piping on the body seat side
removed, depressurize the line and partially open the
disc before loosening any of the valve trim fasteners.
2. Clean the valve, removing any grit or scale. When
handling, care should be taken not to scratch the seal
ring, seat, and gasket faces on both sides of the valve.
3. Replacement seat, seal ring, and other parts are
available from authorized Tri Lok sales and service
locations.
10.1 Packing Replacement
Refer to parts diagram. (Pg 13)
1. If the valve is installed, relieve line pressure.
Close the valve with its actuator, without applying
torque. Remove actuator from the valve. Remove
socket head cap screws and lock washers (M2 &
M3). Remove mounting bracket or mounting plate
(M1), depending on valve size. Note assembly
positions of the actuator and the mounting hardware
for reinstallation.
2. Remove the packing gland retaining nuts (H7), lock
washers (H6) and the stem key(s).
3. Disassemble the gland retainer (H3), split ring (H4)
and gland ring (H1).
4. Remove all packing rings (H2) taking care not to
scratch the stem or valve body bore.
5. Examine the valve body packing bore and the stem
surface. Clean as necessary to remove any corrosion,
foreign matter, and minor surface imperfections
before installing the new packing rings (H2).
6. Apply a small amount of grease to the stem end.
Install new packing rings (H2) in valve body
packing bore one at a time. Install the new packing
rings (H2) into the stufng box one at time. First
the external ring (H2), then internal rings (H2) and
last the second external ring (H2).
7. Reinstall gland ring (H1), split ring (H4), gland
retainer (H3), lock washers (H6) and packing
gland retaining nuts. Tighten the nuts using a
cross bolting technique to the torque specied in
Table 6 (Pg. 17).
8. Install the stem and key(s). Then mount actuator,
paying attention that the actuator is properly
oriented.
!
!

15
IOM
ASME CLASS 600 & 900
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
11.2 Seat Replacement
Refer to parts diagram. (Pg 13).
1. If valve is actuated with fail close or fail open
pneumatic/hydraulic actuator, remove it from
the valve. A suitable gearbox must be installed to
perform maintenance on the valve.
2. When the gearbox is installed on the valve, open
it until the seal ring is disengaged from the seat.
Clean the surface of the valve, blow out all debris
and clean out all the hex sockets of the seal ring
retainer cap screws.
3. Using the appropriate size hex key, completely
remove the upper dowel fasteners (B6) from the
seat retaining ring (B3).
4. Below these dowels are seat retainer lower dowels
(B5) that compress the seat (B1) against the valve
body. Unscrew them until the Seat retainer snap
ring (B4) above the retaining ring is free to move.
Remove the seat retainer snap ring (B4) from the
body. Carefully clean the seat retaining ring (B3)
and upper dowel fasteners (B6)
5. Extract the seat ring retainer (B3), remove the seat
alignment button (B7) that retains the seat within
the body and then remove the seat (B1).
6. Slightly grease (refer to lubrication table) the gasket
groove in the replacement seat, install the new seat
gasket (B2), place this seat/gasket sub-assembly
into the valve body paying attention that the groove
of the seat is aligned with the body groove and
insert the seat alignment button (B7).
7. Replace dowels if necessary.
8. Adjust the seat retaining ring lower dowels (B5)
until they are ush with the bottom of the seat
retaining ring (B3). Install the seat retaining ring
(B3) and the seat retainer snap ring (B4) in its
groove in the body.
9. Using a cross bolting technique, tighten the seat
retainer lower dowels (B5) to 50% of torque
specied in Table 5 (Pg. 17). Once all dowels
are tightened to the same torque, proceed to fully
tighten them to 100% of the listed torque value.
10. Assemble the seat retaining ring upper dowels
(B6) and using a cross bolting technique, tighten
them according to the torque specied in
Table 5 (Pg. 17).
11. Rotate the disc (C1) to its previous position to
facilitate installation of the seal ring (C2). Place a
new disc seal gasket (C5) into the groove on the
disc face (C1). The mating side of the disc seal ring
gasket can be lightly greased to improve retention
in the groove. Be sure that the new seal ring (C2)
is assembled with the seal ring collar (C3) and kept
together with the seal ring collar pin (C4). Place
the seal ring and collar onto the disc making sure
the collar groove is aligned with the seal ring collar
alignment button (C6). Place the seal ring retainer
(C7) over the seal ring. Apply anti-seize compound
to the seal ring retainer cap screws (C8). All of the
cap screws (C8) need to be fully threaded into the
disc (C1), but remain only nger-tight at this time.
Lubricate the sealing surfaces of the seal ring (C2)
and the seat (B1).
12. Cycle the valve with the actuator 2-3 times, only
closing the valve to the point where the seal ring
engages with the seat. Check each time that the
seal ring makes full contact with the seat without
torquing into the seat. Attention should be paid in
the closing stroke that the seat does not scratch the
seal ring. This will allow the seal ring and seat to
be properly aligned. Tighten at least four screws in
the seal retainer ring to prevent the seal ring from
further movement. Open the valve approximately
ve degrees, verify that all alignment marks (disc,
seal ring and seal ring retainer) are aligned. Tighten
the seal ring retainer cap screws (C8) using a cross
bolting technique, to 50% of the torque specied in
Table 4 (Pg. 16). Once all screws are tightened at
the same torque, proceed to fully tighten them to
100% of the listed torque value.
13. Remove the gearbox (if installed), mount the valve
actuator and test the valve.
11.3 Seal Ring Replacement
Refer to parts diagram. (Pg 13).
1. If valve is actuated with fail close or fail open
pneumatic/hydraulic actuator, remove it from
the valve. A suitable gearbox must be installed to
perform maintenance on the valve.
2. Once the gearbox is installed on the valve, open
it until the seal ring is disengaged from the seat.
Clean the surface of the valve, blow out all debris
and clean out all the hex sockets of the seal ring
retainer cap screws.
3. Loosen all the seal ring retainer cap screws (C8) but
leave them in the valve with the seal ring retainer
(C7) attached to the disc (C1).

16 IOM
ASME CLASS 600 & 900
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
4. Completely open the valve, remove the seal ring
retainer cap screws (C8), extract the seal ring
retainer (C7) and the seal ring with collar (C2 & C3)
making sure not to damage the seat. If its necessary,
open the valve past 90° to easily remove the seal
ring retainer and seal ring. Using soft tools and a
suitable wire brush, carefully clean any remnants
of old gasket and foreign matter from the face of
the disc (C1). Blow out all threaded holes and the
gasket groove with compressed air.
5. Clean the seat (B1) by using very ne sandpaper to
remove any small scratches or product deposits.
6. Rotate the disc (C1) to its previous position to
facilitate installation of the seal ring (C2). Place a
new seal ring gasket (C3) into the groove on the
disc face (C1). The mating side of the seal ring
gasket can be lightly greased to improve retention
in the groove. Be sure that the new seal ring (C2)
is assembled with the seal ring collar (C3) and kept
together with the seal ring collar pin (C4). Place the
seal ring and collar onto the disc making sure the
collar groove is aligned with the seal ring reference
button (C6). Place the seal ring retainer (C7) over
the seal ring. Apply anti-seize compound to the seal
ring retainer cap screws (C8). All of the cap screws
(C8) need to be fully threaded into the disc (C1),
but remain only nger-tight at this time. Lubricate
the sealing surfaces of the disc seal ring (C2) and
the seat (B1).
7. Cycle the valve with the actuator 2-3 times, only
closing the valve to the point where the seal ring
engages with the seat. Check each time that the
seal ring makes full contact with the seat without
torquing into the seat. Attention should be paid in
the closing stroke that the seat does not scratch the
seal ring. This will allow the seal ring and seat to
be properly aligned. Tighten at least four screws in
the seal ring retainer to prevent the seal ring from
further movement. Open the valve approximately
ve degrees, verify that all alignment marks (disc
seal ring, disc seal ring retainer) are aligned. Tighten
the seal ring retainer cap screws (C8) using a cross
bolting technique, to 50% of the torque specied in
Table 4 (Pg. 16). Once all screws are tightened at
the same torque, proceed to fully tighten them to
100% of the listed torque value.
8. Remove the gearbox (if installed), mount the valve
actuator and test the valve.
11.4 Bottom Flange Gasket Replacement
Refer to parts diagram. (Pg 13).
1. If the valve is installed, remove line pressure.
2. Completely remove the bottom plate screws (G3).
Remove the bottom plate (G1) and the bottom plate
gasket (G2).
3. Clean the bearing area of residual gasket and for-
eign materials. Grease the body/bottom plate gasket
groove area.
4. Place the new gasket (G2) on the bottom plate (G1)
and install it onto the body.
5. Reinstall the bottom plate screws (G3) and using a
cross bolting technique, tighten them according to
the torque specied in Table 7 (Pg. 17).
Table 4
Torque Values For Seal Ring Retainer Cap Screws
Valve Size Class 600 Class 900
in mm Lb-in Nm Lb-in Nm
4 100 142 - 185 16 - 20 - –
6 150 265 - 310 30 - 35 310 - 350 35 - 40
8 200 265 - 310 30 - 35 490 - 530 55 - 60
10 250 795 - 885 90 - 100 1000 - 1120 115 - 130
12 300 795 - 885 90 - 100 - -
14 350 795 - 885 90 - 100 - -
16 400 795 - 885 90 - 100 1000 - 1120 115 - 130
18 450 1685 - 1815 190 - 205 1860 - 1995 215 - 225
20 500 - - 1860 - 1995 215 - 225

17
IOM
ASME CLASS 600 & 900
A Division of Bray International, Inc.
The Ultimate Critical Service Triple Offset Valve
Installation, Operation
and Maintenance Manual
Table 5
Torque Values for Seat Retainer
Valve Size Class 600 Class 900
Seat Lower Dowel Fastener* Seat Lower Dowel Fastener*
in mm Lb-in Nm Lb-in Nm
4 100 65 - 90 7-10 - -
6 150 180 - 225 20-25 310 - 350 35-40
8 200 265 - 310 30-35 310 - 350 35-40
10 250 265 - 310 30-35 310 - 350 35-40
12 300 265 - 310 30-35 - -
14 350 530 - 575 60-65 - -
16 400 530 - 575 60-65 850 - 950 95-105
18 450 530 - 575 60-65 850 - 950 95-105
20 500 - - 1240 - 11420 140-160
*Seat upper dowels require 1/3 the torque of the seat lower dowel fasteners.
Table 6
Torque Values for Gland Retainer Nuts
Valve Size Class 600 Class 900
in mm Lb-in Nm Lb-in Nm
4 100 130 - 155 15-17.5 - –
6 150 265 - 310 30-35 265 - 310 30-35
8 200 265 - 310 30-35 620 - 750 70-85
10 250 490 - 530 55-60 750 - 840 80-95
12 300 620 - 750 70-85 - -
14 350 620 - 750 70-85 - -
16 400 750 - 840 80-95 1685 - 1815 190-205
18 450 1110 - 1240 125-140 1685 - 1815 190-205
20 500 - - 1685 - 1815 190-205
Table 7
Torque Values for Bottom Flange Screws
Valve Size Class 600 Class 900
in mm Lb-in Nm Lb-in Nm
4 100 265 - 310 30-35 - -
6 150 350 - 400 40-45 1240 - 1285 140-145
8 200 350 - 400 40-45 1860 - 1995 215-225
10 250 1240 - 1285 140-145 1860 - 1995 215-225
12 300 1240 - 1285 140-145 - -
14 350 1860 - 1995 215-225 - -
16 400 1860 - 1995 215-225 2560 - 2650 290-300
18 450 2560 - 2650 290-300 2560 - 2650 290-300
20 500 - - 2560 - 2650 290-300

A Division of BRAY INTERNATIONAL, Inc.
13333 Westland East Blvd. Houston, Texas 77041
281/894-5454 FAX [phone] www.bray.com
Bray®is a registered trademark of BRAY INTERNATIONAL, Inc.
© 2014 Bray International. All rights reserved. IOM-24-002 05-2014