Tricentric®
Class 300 Valve Characteristics
[Drawings] [Dimensions] [Materials] [Torques]

PRESSURE/TEMPERATURE RATING

                       

Temperature Of 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

 Half-Rated

at 370 psi.

 Full-Rated

at 740 psi.

Size

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 800ºF
     

  • 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 preferred direction of shut-off under static differential pressure conditions.


[Drawings] [Dimensions] [Materials] [Torques]