Steel Ball Valves - Hasmak.com.tr

Pressure-Temperature Ratings
The pressure-temperature ratings of ball valves are determined,
not only by valve shell materials, but more essentially by sealing
materials used for ball seats, gland packing and gaskets. Sealing
materials may be high molecule plastics or rubbers, but the
choice is limited by the characteristics of the service fluid,
working tempera-tures, working pressures, velocity of fluid, and
operational frequency of valves.
As it is very difficult to predetermine the exact pressuretemperature
rating for all kinds of fluid under all imaginable
conditions, we have prepared general rating charts for nonshock
fluid service here, based on our past experiences both in
the field and in our laboratory.
In case of extraordinary service conditions as mentioned below,
contact KITZ Corporation or its distributors for technical advice:
1. <strong>Valves</strong> shall be left fully closed for a long period of time
under high temperature or high differential pressure.
2. <strong>Valves</strong> shall be frequently operated under high temperature
or high differential pressure.
3. Frequent change of line pressure or temperature.
Seat materials A : Virgin PTFE B : HYPATITE ® PTFE, Carbon-filled PTFE, or SWELLESS ® . HYPATITE ® is the standard seat material for
KITZ ball valves. Specify virgin PTFE or carbon-filled PTFE when required. The body pressure ratings shown here are for ASTM A216
Gr. WCB. For the pressure ratings of other valve shell materials, refer to the latest edition of ASME B16.34.
150 / 300 SCTBZM (C) / UTBZM (C) : 1 /2" and 3 /4"
150 / 300 SCTAM (C) / UTAM (C) : 1 /2" to 1"
150 / 300 SCTBZM (C) / UTBZM (C) : 1 to 2 1 /2"
150 / 300 SCTAM (C) / UTAM (C) : 1 1 /4" to 3"
MPa
psig
1000
MPa
psig
1000
6.08
5.88
5.88
5.11
Class 300 WCB body rating
800
5.30
5.11
5.00
Class 300 WCB body rating
800
Pressure
3.92
A
B
600
400
Pressure
3.92
A
B
600
400
1.96
Class 150 WCB body rating
1.96
Class 150 WCB body rating
200
200
0
0
29 0 50 100 150 200 250 300 (C)
20 100 200 300 400 500 572 (F)
Temperature
0
0
29 0 50 100 150 200 250 300 (C)
20 100 200 300 400 500 572 (F)
Temperature
150 / 300 SCTBZM (C) / UTBZM (C) : 3" and 4"
150 / 300 SCTAM (C) / UTAM (C) : 4" and 6"
150 / 300 SCTBZM (C) / UTBZM (C) : 5" and 6"
150 / 300 SCTAM (C) / UTAM (C) : 8" and 10"
MPa
psig
1000
MPa
psig
1000
5.88
5.88
5.11
800
5.11
800
Pressure
3.92
1.96
A
Class 150 WCB
body rating
B
Class 300 WCB body rating
600
400
200
Pressure
3.92
1.96
Note*
A
Class 150 WCB
body rating
B
Class 300 WCB body rating
600
400
200
0
29 0 50 100 150 200 250
0
300 (C)
20 100 200 300 400 500 572 (F)
Temperature
009 013
KITZ steel ball valves, floating ball design
0
0
29 0 50 100 150 200 250 300 (C)
20 100 200 300 400 500 572 (F)
Temperature
Note* Continuous pressurization is not re<strong>com</strong>mended in this P-T range.