Tri Lok
®
Cryogenic Valve
Installation, Operation and Maintenance Manual
TRI LOK
®
CRYOGENIC 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