Butterfly Valves Tricentric 300 Valve Characteristics
 
Tricentric®
Class 300 Valve Characteristics
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PRESSURE/TEMPERATURE RATING

Temperature Working Pressure, psig
Carbon Steel 316 SS
-20 to 100 740 720
200 675 620
300 655 560
400 635 515
500 600 480
600 550 450
650 535 445
700 535 430
750 505 425
800 410 420
850 Note A 420
900 --- 415
950 --- 385
1000 --- 350
1050 --- 345
1100 --- 305
1150 --- 235
1200 --- 185
1250 --- 145
1300 --- 115
1350 --- 95
1400 --- 75
1450 --- 60
1500 --- 40

VALVE SEATING/UNSEATING TORQUES

Valve Size Half-Rated at 370 psi. Full-Rated at 740 psi.
in.-lb. in.-lb.
3 1,200 2,400
4 1,750 3,500
6 3,650 7,300
8 6,650 13,300
10 8,350 16,700
12 11,100 22,200
14 18,400 36,800
16 27,750 55,500
18 34,800 69,600
20 45,850 91,700
24 77,705 155,410
30 146,500 293,000
36 234,000 468,000
42 355,000 710,000

See notes B,C

Notes:

  • A. Permissible, but not recommended for prolonged usage above 800°F
  • B. These values may be interpolated on a linear scale for shut-off pressures between 150 psi and 285 psi.
  • C. Values shown are for preferreddirection of shut-off under static differential pressure conditions.
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