Bray TRI LOK User manual

TRI LOK®
TRIPLE OFFSET VALVE
Installation, Operation and Maintenance Manual

Tri Lok®
Installation, Operation and Maintenance Manual
1 |BRAY.COM
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TABLE OF CONTENTS
Definition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 ATEX Directive 2014/34/EU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.1 Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.2 Special Conditions for Safe Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.0 Long Term Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.0 Handling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.0 Travel Stop Setting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.0 Valve Part Diagram - Class 150, 300 Sectional Drawing Standard Configuration Tri Lok Valve. . . . . . . . . . .7
7.1 Exploded View - Class 150, 300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8.0 Valve Parts Diagram - Class 600 Sectional Drawing Standard Configuration Tri Lok Valve . . . . . . . . . . . . . 9
8.1 Exploded View - Class 600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.0 Standard Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.1 Recommended Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.2 Packing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.3 Seat Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.4 Seal Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9.4.1 Seal ring replacement with the seat in the valve (Class 150) . . . . . . . . . . . . . . . . . . . . 13
9.4.2 Seal ring replacement with the seat in the valve (Class 600) . . . . . . . . . . . . . . . . . . . . 13
9.4.3 Seal ring replacement with the seat removed from the valve . . . . . . . . . . . . . . . . . . . 14
9.5 Bottom Flange Gasket Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TABLES
Table 1 - Minimum Allowable Pipe ID for Tri Lok Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 2 - Torque Values for Packing Gland Hex Nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 3 - Torque Values for Seat Retaining Cap Screws and Seal Retainer Cap Screws and Bottom Plate . . . 15
Table 4 - Torque Values For Bracket Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 2
DEFINITION OF TERMS
indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
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.
Read and Follow These Instructions
Save These Instructions
1.0 INTRODUCTION
Information provided in this manual is for standard
Tri Lok configuration only. Specific 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,
and 600
3” - 48”
(80mm - 1200mm)
Wafer
Lug
Double Flange
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.
Do not remove or de-energize actuation devices while the valve
is under line pressure.
The valve is inherently fire safe, and has been qualified to
ISO 10497 and API 607 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 flow is indicated by an arrow on
the valve nameplate.

Tri Lok®
Installation, Operation and Maintenance Manual
3 |BRAY.COM
2.0 SAFETY INFORMATION
2.1 ATEX Directive 2014/34/EU
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 operation must be
also observed.
2.1.1 Marking
Certificate Number: LRV 14ATEX0001X
Certification Code:
Non-Mining Applications
0038
0518 II 1G Ex h IIC Tx Ga
Mining Applications
0038
0518 I M1 Ex h Tx Ma
Ambient Range: TX See Special Conditions for Safe Use
Serial Number: As appropriate
Year of Manufacture:
Warnings:
2.1.2 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 specific 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
and Group II Category 1 equipment, 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 sufficient 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 flow rate of the process media
remains below 1 m/s or providing sufficient 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.
Filtration of Process Medium Considerations
Special consideration should be made regarding the
filtration of the process medium if there is a potential for
the process medium to contain solid particulates. The
process medium is recommended to be filtered to allow
particles no greater than 1.0 mm in diameter through the
valve assembly where there is a high probability of solid
particulates. Larger particulate sizes may be deemed
appropriate based on the possibility of particulates within
the process medium and the area classification. The
decision regarding filtration levels and limits should be well-
documented by the system designer and/or end user to
ensure continued compliance through the life of the valve.

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 4
3.0 INSTALLATION
1. Tri Lok is designed to be installed between ASME B16.5,
B16.47 flanges. When the valve is open, a portion of
the disc may protrude into the pipe. Wafer and lug
configurations will protrude on both sides of the valve.
In the double flange 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.
2. The valve closes with clockwise rotation of the stem and
opens with counterclockwise rotation.
Avoid uncontrolled rotation of the disc beyond fully-open
position (counterclockwise) as this could damage the sealing
surfaces.
3. To benefit 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 flow.
4. Whenever possible, install with the stem vertical. If this
installation is not possible, orient the stem at an inclined
angle with the actuator above the horizontal centerline.
5. Flange gaskets should conform to the requirements of
ASME B16.20 (supersedes API Standard 601) for ASME
B16.5 flanges. Spiral wound gaskets conforming 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
flange bolting. Additional force from the flange bolts is
not required.
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.
Table 1
Minimum Allowable Pipe ID for Tri Lok Installation
Valve/Pipe
Size
Minimum Pipe ID
Class 150 Class 300 Class 600
In mm In mm In mm In mm
3 80 2.4 61 2.1 53
Consult
Factory
4 100 3.1 80 1.5 38
6 150 5.3 135 5.2 132
8 200 7.1 180 6.8 173 4.3 109
10 250 9.0 228 8.9 226 6.2 158
12 300 11.0 278 11.0 279 8.1 206
14 350 12.2 310 11.8 300 10.6 269
16 400 14.2 359 13.7 348 11.2 284
18 450 15.9 403 15.5 394 12.8 326
20 500 17.9 454 16.9 429 14.4 366
24 600 21.8 554 21.5 546 16.3 414
28 700 24.3 616 24.1 613
Consult
Factory
30 750 27.0 686 27.2 691
32 800 29.4 747 29.0 737
36 900 33.3 846 32.6 828
40 1000 36.8 834 36.4 925
42 1050 39.1 992 Consult
Factory
48 1200 44.9 1140

Tri Lok®
Installation, Operation and Maintenance Manual
5 |BRAY.COM
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 flange
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 specific
requirements.
5.0 HANDLING REQUIREMENTS
Packed Valves
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.
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.
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.

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 6
6.0 TRAVEL STOP SETTING INSTRUCTIONS
Preface
Tri Lok is a quarter turn, metal-seated triple offset 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.
1. 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.
2. Rotate BOTH valve and actuator to either the full
“open” or full “closed” position to establish a common
reference point.
3. Mount actuator to the valve and secure.
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.
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.

Tri Lok®
Installation, Operation and Maintenance Manual
7 |BRAY.COM
7.0 VALVE PART DIAGRAM - CLASS 150, 300 Sectional Drawing Standard Configuration Tri Lok Valve
MOUNTING BRACKET
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
SEAT
Double Flange - Lug - Wafer
SEAT
Buttweld DISC & SEAL
BOTTOM PLUG
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
E1
C1
E1
G2
E2
G2
G1
E1 C7
E4 G1
G3
M3 M2 H10 M4
B1 B3 B2 B1 B4 B6 B7 B5 B8 C6 C5 C4 C2 C3
MOUNTING BRACKET
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
SEAT
Double Flange - Lug - Wafer
SEAT
Buttweld DISC & SEAL
BOTTOM PLUG
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
E1
C1
E1
G2
E2
G2
G1
E1 C7
E4 G1
G3
M3 M2 H10 M4
B1 B3 B2 B1 B4 B6 B7 B5 B8 C6 C5 C4 C2 C3
MOUNTING BRACKET
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
SEAT
Double Flange - Lug - Wafer
SEAT
Buttweld DISC & SEAL
BOTTOM PLUG
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
E1
C1
E1
G2
E2
G2
G1
E1 C7
E4 G1
G3
M3 M2 H10 M4
B1 B3 B2 B1 B4 B6 B7 B5 B8 C6 C5 C4 C2 C3
MOUNTING BRACKET
Class 150: Sizes 3” - 12”
Class 300: Sizes 3” - 10”
SEAT
Double Flange - Lug - Wafer
SEAT
Buttweld DISC & SEAL
BOTTOM PLUG
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
E1
C1
E1
G2
E2
G2
G1
E1 C7
E4 G1
G3
M3 M2 H10 M4
B1 B3 B2 B1 B4 B6 B7 B5 B8 C6 C5 C4 C2 C3

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 8
7.1 EXPLODED VIEW - CLASS 150, 300
Item Component Description Note
A1 Body
B1 Seat 1
B2 Seat Gasket 1
B3 Seat Cap Screws 1
C1 Disc
C2 Seal Ring 1
C3 Seal Ring Gasket 1
C4 Seal Ring Retainer
C5 Seal Ring Retainer Cap Screws 1
C6 Disc Spacer
C7 Seal Ring Alignment Pin
D1 Stem
E1 Stem Bearing
E2 Bearing Protector Gasket
E3 Upper Spacer
E4 Lower Spacer
F1 Thrust Bearing
F2 Bearing Washer
G1 Bottom Plate
G2 Bottom Plate Gasket 1
G3 Bottom Plate Cap Screws
H1 Packing Gland Ring
H2 Packing Thrust Washer
H3 Stem Packing 1
H4 Gland Retainer
H5 Anti Blow-Out Retaining Ring
H6 Packing Gland Studs
H7 Packing Gland Lock Washers
H8 Packing Gland Hex Nuts
J1 Mounting Bracket
J2 Mounting Bracket Cap Screws
J3 Mounting Bracket Lock Washers
J4 Mounting Bracket Pins
K1 Identification Tag
K2 Drive Screws
L1 Stem Keys
Note 1: Suggested Spare Part
1
J2
J1
H8
H2
H1
H1
E3
E1
E2
E2
L1
D1
E1
E4
G1
G3
G2
A1
C1
C3
C2
C4
C5
B2
B1
B3
H3
H4
H5
H6
H7
C6

Tri Lok®
Installation, Operation and Maintenance Manual
9 |BRAY.COM
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
8.0 VALVE PARTS DIAGRAM - CLASS 600 Sectional Drawing Standard Configuration Tri Lok Valve
1Disc - Seal - Seat illustrations depict bolted and push designs

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 10
Item Component Description Note
A1 Body
B1 Seat 1
B2 Seat Gasket 1
B3 Seat Cap Screws (Not Shown) 1
B4 Seat Retainer
B5 Seat Retainer Ring
B6 Seat Lower Set Screws 1
B7 Seat Upper Set Screws 1
B8 Seat Alignment Button
C1 Disc
C2 Seal Ring 1
C3 Seal Ring Gasket 1
C4 Seal Ring Retainer
C5 Seal Ring Retainer Cap Screws 1
C6 Disc Spacer
C7 Seal Ring Alignment Pin
C8 Disc Seal Collar
C9 Roll Pin For Seal Ring
D1 Stem
E1 Stem Bearing
E2 Bearing Protector Gasket
F1 Thrust Bearing
F2 Bearing Washer
G1 Bottom Plate
G2 Bottom Plate Gasket 1
G3 Bottom Plate Cap Screws
H1 Packing Gland Ring
H2 Packing Thrust Washer
H3 Stem Packing 1
H4 Gland Retainer
H5 Anti Blow-Out Retaining Ring
H6 Packing Gland Studs
H7 Packing Gland Lock Washers
H8 Packing Gland Hex Nuts
J1 Mounting Bracket
J2 Mounting Bracket Cap Screws
J3 Mounting Bracket Lock Washers
J4 Mounting Bracket Pins
K1 Identification Tag
K2 Drive Screws
L1 Stem Keys
A1
E2
E1
E2
F1
F2
G2
G1
G3
B1
B4
B7
B5
B2
C4
C8
C2
C6
C1
C5
D1
L1
J4
E1
H3
H1
H2
H5
H6
H4
H8
H7
J1
J2
J3
B6
B8
C7
C3
C9
8.1 EXPLODED VIEW - CLASS 600

Tri Lok®
Installation, Operation and Maintenance Manual
11 |BRAY.COM
9.0 STANDARD MAINTENANCE
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.
The Tri Lok valve must be in the closed position to be removed
from the line to prevent damaging the disc seal ring.
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.
1. 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.
2. Replacement seat, disc seal ring, and other parts are
available from authorized Tri Lok sales and service
locations.
9.1 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)
9.2 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 disassembly 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
stuffing 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. 15).
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. 15).
9. Install the key(s). Then mount actuator, paying
attention that the actuator is properly oriented.
9.3 Seat Replacement
Refer to parts diagram. (Pgs. 7/8)
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.
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 flat stable surface with the body seat (B1)
facing up.

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 12
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
hammer, 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 to the threads in all tapped 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 alignment pin (C8) into the disc. Place
the seal ring (C2) onto the disc such that the notch is
aligned. 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 flange
cap screws (C5) should be fully threaded into the disc
(C1), but remain only finger-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 position 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 retaining cavity in the
body (A1) match. Apply anti-seize compound to seat
retaining cap screws (B3) and install the screws (B3)
finger-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 firmly using a
cross bolting technique to the torque specified in Table
3 (Pg. 15).
12. Reinstall actuation device and test the valve.
13. 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.
14. Close the valve. Tighten at least four screws in the
seal ring retainer to prevent the seal ring from further
movement. Open the valve approximately five degrees.
Tighten all seal ring retainer screws (C5) using a cross
bolting technique, to the torque specified in Table 3
(Pg. 152).
15. Re-apply lubricant to the sealing surfaces of the valve.
9.4 Seal Ring Replacement
Refer to parts diagram. (Pg. 7)
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 difficult than removing the seat (B1) and
installing the seal ring (C2) solely from the seat side
of the body.

Tri Lok®
Installation, Operation and Maintenance Manual
13 |BRAY.COM
9.4.1 Seal ring replacement with the seat in
the valve (Class 150)
1. Remove valve from the pipeline. Remove the actuator
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)
counterclockwise 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 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. 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 finger-tight at this time.
8. Lubricate (refer to lubrication table) 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 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.
10. Tighten the seal ring retainer cap screws (C5) using a
cross bolting technique to the torque specified in Table
3 (Pg. 15).
11. Re-apply lubricant to the sealing surfaces of the valve.
Reinstall operator or actuator and test the valve.
9.4.2 Seal ring replacement with the seat in
the valve (Class 600)
1. Remove valve from the pipeline. Remove the actuator
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 the appropriate size hex key, completely remove
the upper set screw fasteners (B6) from the seat retainer
ring (B3).
5. Below these dowels are seat retainer lower set screws
(B5) that compress the seat (B1) against the valve body.
Unscrew them until the Seat retainer ring (B4) above the
retaining ring is free to move. Remove the seat retainer
ring (B4) from the body. Carefully clean the seat retainer
ring (B3) and upper set screw fasteners (B6).
6. 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).
7. Slightly grease 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).
8. Replace set screw if necessary.
9. Adjust the seat retainer ring lower set screws (B5) until
they are flush with the bottom of the seat retainer
ring (B3). Install the seat retainer ring (B3) and the seat
retainer ring (B4) in its groove in the body.
10. Using a cross bolting technique, tighten the seat retainer
lower set screws (B5) to 50% of torque specified in
Table 4 (Pg. 16). Once all set screws are tightened to the
same torque, proceed to fully tighten them to 100% of
the listed torque value.

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 14
11. Assemble the seat retaining ring upper dowels (B6) and
using a cross bolting technique, tighten them according
to the torque specified in Table 4 (Pg. 16).
12. 20. 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) and the dowel pin (C10). 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 finger-tight at this time.
9.4.3 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.
9.5 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 foreign
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 specified in Table 3 (Pg. 15).
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
specified in Table 3 (Pg. 15).

Tri Lok®
Installation, Operation and Maintenance Manual
15 |BRAY.COM
Table 2 - Torque Values for Packing Gland Hex Nuts
Valve Size Class 150 Class 300 Class 600
in mm Lb-in Nm Lb-in Nm Lb-in Nm
3 80 22 2 22 2 Consult Factory
4 100 31 4 31 4
6 150 31 4 46 5 51 6
8 200 35 4 55 6 110 12
10 250 50 6 60 7 126 14
12 300 55 6 80 9 254 29
14 350 80 9 141 16 279 31
16 400 80 9 254 29 303 34
18 450 141 16 279 31 328 37
20 500 141 16 303 34 378 43
24 600 279 31 328 37 619 70
28 700 328 37 619 70
Consult Factory
30 750 328 37 950 107
32 800 378 43 950 107
36 900 619 70 1046 118
40 1000 950 107
Consult Factory42 1050 950 107
48 1200 1046 118
Table 3 - Torque Values for Seat Retaining Cap Screws and Seal Retainer Cap Screws and Bottom Plate
Valve Size
Class 150 Class 300 Class 600
Seat Seal Ring
Retainer
Bottom Plate
Cap Screw Seat Seal Ring Retainer
Bottom Plate
Cap Screw Seat Seal Ring Retainer
Bottom Plate
Cap Screw
Seat Retainer
Set Screw
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 Lb-in Nm Lb-in Nm
3 80 22 2 19 2 96 11 22 2 19 2 96 11 Consult Factory
4 100 55 6 45 5 96 11 55 6 45 5 96 11
6 150 55 6 45 5 96 11 55 6 95 11 171 19 204 23 95 11 422 48 204 23
8 200 55 6 45 5 96 11 110 12 95 11 171 19 204 23 171 19 848 96 204 23
10 250 204 23 95 11 171 19 204 23 171 19 422 48 499 56 422 48 848 96 499 56
12 300 204 23 171 19 171 19 204 23 171 19 422 48 499 56 848 96 1,522 172 499 56
14 350 204 23 171 19 423 48 204 23 422 48 422 48 499 56 848 96 1,522 172 499 56
16 400 204 23 171 19 423 48 204 23 422 48 848 96 499 56 848 96 1,522 172 499 56
18 450 320 36 171 19 423 48 204 23 422 48 848 96 1,008 114 848 96 2,464 278 499 56
20 500 320 36 422 48 423 48 499 56 422 48 1,522 172 1,008 114 1,522 172 2,464 278 1008 114
24 600 320 36 422 48 849 96 499 56 848 96 2,464 278 1,008 114 1,522 172 3,703 418 1008 114
28 700 499 56 848 96 848 96 499 56 848 96 1,522 172
Consult Factory
30 750 499 56 848 96 848 96 499 56 848 96 2,464 278
32 800 499 56 848 96 1,522 172 499 56 848 96 2,464 278
36 900 499 56 848 96 1,522 172 499 56 1,522 172 2,464 278
40 1000 499 56 848 96 1,522 172
Consult Factory
42 1050 499 56 848 96 1,522 172
48 1200 499 56 848 96 1,522 172
*Seat upper dowels require 1/3 the torque of the seat lower dowel fasteners.

Tri Lok®
Installation, Operation and Maintenance Manual
TRI LOK®TRIPLE OFFSET VALVE | 16
Table 4 - Torque Values for Bracket Fasteners
Valve Size Class 150 Class 300 Class 600 Double Flange Class 600 Lug
in mm Lb-in Nm Lb-in Nm Lb-in Nm Lb-in Nm
3 80 300 34 300 34 Consult Factory Consult Factory
4 100 300 34 300 34 422 48 423 48
6 150 300 34 300 34 1,522 172 Consult Factory
8 200 300 34 750 85 1,522 172 1,522 172
10 250 750 85 750 85 848 96 1,522 172
12 300 750 85 1,500 169 1,522 172 848 96
14 350 1,500 169 2,600 294 1,522 172 1,522 172
16 400 2,600 294 2,600 294 1,522 172 1,522 172
18 450 2,600 294 3,600 407 3,703 418 1,522 172
20 500 2,600 294 3,600 407 7,473 844 3,703 418
24 600 6,300 712 14,250 1,610 7,473 844 7,473 844
28 700 2,600 294 14,250 1,610
Consult Factory Consult Factory
30 750 14,250 1,610 14,250 1,610
32 800 14,250 1,610 14,250 1,610
36 900 14,250 1,610 14,250 1,610
40 1,000 14,250 1,610 14,250 1,610
42 1,050 14,250 1,610 14,250 1,610
48 1,200 14,250 1,610 14,250 1,610

Tri Lok®
Installation, Operation and Maintenance Manual
All statements, technical information, and recommendations in this bulletin are for general use only. Consult
Bray representatives or factory for the specific requirements and material selection for your intended
application. The right to change or modify product design or product without prior notice is reserved.
Patents issued and applied for worldwide.
Bray®is a registered trademark of Bray International, Inc.
© 2018 Bray International, Inc. All rights reserved. OM_Tri Lok_Standard_10_2018
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