Page 6 - BuTech - Technical information
P. 6
PRESSURE VS TEMPERATURE RATING CURVES
Curves and ratings presented here are average values for reference only. These values can be significantly affected
by pressure and temperature charactistics of trim materials, stem packing materials or o-ring, and connection type.
Other options such as extended stuffing box will be required to achieve the maximum temperature rating. See pages
Tech-2 through Tech-3 for details.
For extreme pressure/temperature requirements, please contact factory for recommendations.
To obtain the maximum pressure rating at an elevated temperature, multiply the maximum pressure rating of the item
in special material at room temperature, by the elevated temperature factor (% of Design Temperature)
Hastelloy C276
Inconel 600
100
100
90
% of Rated Pressure @ Design Temperature 70 % of Rated Pressure @ Design Temperature 70
90
80
80
60
60
50
50
40
40
30
20
20
10 30
10
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 0
100 200 300 400 500 600 700 800 900 1000 1100 1200
(38) (93) (149) (204) (260) (315) (371) (426) (482) (537) (593) (649)
(38) (93) (149) (204) (260) (315) (371) (426) (482) (537) (593) (649)
Temperature ˚F
(˚C) Temperature ˚F
(˚C)
Inconel 625
100
90
% of Rated Pressure @ Design Temperature 70
80
60
50
40
30
20
10
0
100 200 300 400 500 600 700 800 900 1000 1100 1200
(38) (93) (149) (204) (260) (315) (371) (426) (482) (537) (593) (649)
Temperature ˚F
(˚C)
Tech-09
Page Tech-6
2121 EBCO Drive, Suite 1 • Erie, PA 16506 USA • Ph: (814) 833-4904 • Fax: (814) 833-2612 • E-mail: hq@butech-valve.com
