13
DiaphragmPerformance
Temperature andPressureRelationship
16
14
12
10
8
6
4
2
-10° HARDRUBBERLINED
85°
-10° POLYPROPYLENELINED (P.P.)
85°*
-10° BUTYLRUBBERLINED
110°
-10° ETHYLENETETRAFLUOROETHYLENE (ETFE)
150°
-10° CAST IRON: UNLINED, GLASSLINED&PTFELINED
175°
-10° SG IRON: UNLINEDANDPFALINED
175°
-30°
OTHERMETALS: CARBONSTEEL, STAINLESSSTEEL, COPPERALLOYS 175°
-5°
214/226
175°
-20°
214/425
160°
-20°
214/300
150°
-50°
Q
100°
-20°
C & CV
100°
-30º
HT
100°
-5°
226
150°
-10°
237 & 286
100°
-40°
300 & 300V
130°
-40°
425&425V
130°
DiaphragmTemperatureTypeA (°C)
Temperature bands for diaphragms are shown as a guide only. Many aspects of service
conditionswill determine the highest working temperature. For example, 325 diaphragms
have given excellent performance under certain conditions up to 150°C.
In certain applications the following temperature ratings apply:
SG: -20°C, SS: -30°C, GM: -30°C.
* Depends on body substratematerial.
** When lined body is cast steel, minimum temperature is -30°C.
When SGGrade EN-GJS-400-18-LT is used, minimum temperature is -20°C.
***214Smanual operation only.
BodyTemperatureLimit (°C)**
-20°
214K/425
100°
0°C
20°C
40°C
60°C
80°C 100°C 120°C 140°C 160°C 175°C
ATypeValveBody (SG Iron&Cast Iron) Temperature/PressureRelationship
PRESSURE (bar)
TEMPERATURE °C
DN8 - DN50 (R) (P)***
SG
CI
DN65-DN150 (R) DN8-DN125 (P)
DN150 (P)
DN200
DN350
DN250
DN300
16
14
12
10
8
6
4
0°C
20°C
40°C
60°C
80°C 100°C 120°C 140°C 160°C 175°C
ATypeValveBody (CarbonSteel, St.Steel&CopperAlloys) Temperature/PressureRelationship
PRESSURE (bar)
TEMPERATURE °C
DN8 - DN50 (R) (P)***
CS
SS
COPPERALLOY
DN65-DN150 (R) DN8-DN125 (P)
DN150 (P)
