Triad Series 66FD
Fire Rated Valve
TRIAD
INSTALLATION & MAINTENANCE MANUAL
SERIES 66FD
3-PIECE FULL OR REDUCED PORT BALL VALVES
1. USE:
1.1 Maximum results and long life of the valves can be maintained under normal working
conditions and according with pressure/temperature rating and corrosion data chart.
2. MANUAL OPERATION:
2.1 The opening and closing of the valve is done by turning the lever a ¼" turn (90 degrees).
A. Valve in Open Position – the lever is in line with the valve or pipeline.
B. Valve in Closed Position – the lever is at right angle with the valve or pipeline.
3. DISASSEMBLY & CLEANING PROCEDURE:
Caution: ball valve can trap fluids in the ball cavity when closed.
3.1 If the valve has been used to control hazardous media, it must be decontaminated before disassembly.
It is recommended that the following steps are taken for safe removal and reassembly.
A. Relief the line pressure.
B. Place valve in half-open position and flush the line to remove any hazardous material
from the valve.
C. All persons involved in the removal and disassembly of the valve should wear the proper
Protective clothing, such as face shield, gloves, etc.
Maintenance of parts is easy, even if the valve is installed in the line:
By removing all the body bolts except one and loosening the remain one, valve body can be swung out.
Seats, gaskets and ball can be replaced without disturbing pipe alignment.
On threaded lines, valve can be screwed on without the use of unions, as the three-piece
construction makes valve ends free, by removing the bolts.
4. GENERAL INFORMATION FOR INSTALLATION:
4.1 The valve can be installed in any position on the pipeline.
Before installation of the valves, the pipe must be flushed clean of dirt, burrs and welding residues, or the seats
4.2
and ball surface will be damaged.
4.3 The pipe must be free from tension.
5. INSTALLATION OF THREADED VALVES
5.1 Use conventional sealant, such as hemp core, Teflon, etc. on the threads.
5.2 Apply wrench only on the hexagon of the valve ends. Tightening by using the valve body or lever can
seriously damage the valve.
5.3 In some applications, screwed valves are backwelded on site, These valves must be treated as per
instructions for weld end valves before backwelding.
6. INSTALLATION OF WELD-END VALVES
6.1 Tack weld the valve on the pipe in four points on both end caps.
6.2 With the valve in the open position, (lever to be parallel to the axis of the pipe), remove all the body bolts
Manual 66.doc
02/19/2004
Triad Series 66FD
Fire Rated Valve
except one.
Loosen the nut on the remaining bolt.
Swing the body outside the pipe.
6.3 Finish welding both end caps on the pipe.
6.4 When cooled down, clean both end caps and body surface.
6.5 Swing the body back in position and replace the bolts. Tighten all nuts slightly. This
Operation is very important, to keep body and end caps perfectly parallel, thus preventing
distortion of the end caps.
6.6 Tighten body bolts evenly. Make sure that maximum tightening torque is observed.
6.7 Check proper operation of the valve.
BOLT TIGHTENING SPECIFICATIONS
The body bolts of the valve should be tightened evenly.
Tighten one-side snugly, then the one diagonal across.
Repeat for the other bolts, bringing them all down tightly in sequence.
Series 66 Torque
Valve Size
Break Away
(R-PTFE SEATS)
Torque
Cv Valve Size
Break Away
Torque
Cv
Inch DN In/Lb Nm G. P .M. Inch DN In/Lb Nm G. P .M.
1/4" 8 69 8 8 1/4" - - - 3/8" 10 69 8 8 3/8" - - - 1/2" 15 69 8 15 1/2" 15 69 8 8
3/4" 20 92 10 34 3/4" 20 69 8 15
1" 25 138 16 56 1" 25 92 10 34
11/4" 32 207 23 85 11/4" 32 138 16 56
11/2" 40 288 33 125 11/2" 40 207 23 85
2" 50 415 47 250 2" 50 288 33 125
21/2" 65 553 62 320 21/2" 65 415 47 250
3" 80 898 101 580 3" 80 553 62 320
4" 100 1010 114 1020 4" 100 898 101 580
30% safety factor included.(full port) 30% safety factor included.(Reduced port)
Manual 66.doc
02/19/2004
Triad Series 66FD
Fire Rated Valve
Full port Red. port
1/4"
3/8"
1/2"
3/4"
1"
1.1/4"
1.1/2"
2"
2.1/2"
3"
4"
Torque of Body Bolt
10 ~ 11 N/A
10 ~ 11 N/A
11 ~ 15 10 ~ 11
14 ~ 18 11 ~ 15
19 ~ 23 14 ~ 18
22 ~ 25 19 ~ 23
38 ~ 42 22 ~ 25
42 ~ 46 38 ~ 42
47 ~ 50 42 ~ 46
49 ~ 55 47 ~ 50
55 ~ 58 49 ~ 55
NM
1.1/4"
1.1/2"
2.1/2"
IN-LBS
SIZE Full port Red. port
1/4"
3/8"
1/2"
3/4"
90 ~ 100 N/A
90 ~ 100 N/A
100 ~ 130 90 ~ 100
125 ~ 160 100 ~ 130
170 ~ 200 125 ~ 160
1"
195 ~ 220 170 ~ 200
335 ~ 375 195 ~ 220
370 ~ 405 335 ~ 375
2"
415 ~ 440 370 ~ 405
435 ~ 485 415 ~ 440
3"
485 ~ 515 435 ~ 485
4"
Manual 66.doc
02/19/2004
Triad Series 66FD
Fire Rated Valve
SIZE Full port Red. port SIZE Full port Red. port
1/4"
3/8"
1/2"
3/4"
1"
1.1/4"
1.1/2"
2"
2.1/2"
3"
4"
Torque of Stem Nut
8.2
8.2
9.2 8.2
9.2 9.2
14.3 9.2
14.3 14.3
19.4 14.3
19.4 19.4
22.4 19.4
22.4 22.4
25.5 22.4
N/A
N/A
NM
1/4"
3/8"
1/2"
3/4"
1"
1.1/4"
1.1/2"
2"
2.1/2"
3"
4"
IN-LBS
69
69
78 69
78 78
122 78
122 122
165 122
165 165
191 165
191 191
217 191
N/A
N/A
Manual 66.doc
02/19/2004
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