Ex relevant specifications for operation in Div. 1
SM/FEX300/FEX500/FM/CSA-EN
FEX300, FEX500
EN - 25
5.3
Temperature data for operation in Zone 1 / Div. 1
Model name
Surface temperature
FEP315 / FEH315
FEP515 / FEH515
70 °C (158 °F)
FEP325 / FEP525
85 °C (185 °F)
FET325 / FET525
70 °C (158 °F)
The surface temperature depends on the fluid temperature.
With increasing fluid temperature > 70 °C (158 °F) or > 85 °C (185 °F) the surface temperature also increases to the level of the fluid
temperature.
Note
The maximum permissible fluid temperature depends on the lining and flange material, and is limited by the operating values in Table 1 and the
explosion protection specifications in Tables 2 ... n.
Table 1: Fluid temperature as a function of lining and flange material
Models FEP315 / FEP325, FEP515 / FEP525
Materials
Fluid temperature (operating values)
Lining
Flange
Minimum
Maximum
Hard rubber
Steel
-10 °C (14 °F)
-5 °C (23 °F)
1)
90 °C (194 °F)
80 °C (176 °F)
1)
Hard rubber
Stainless steel
-15 °C (5 °F)
-5 °C (23 °F)
1)
90 °C (194 °F)
80 °C (176 °F)
1)
Soft rubber
Steel
-10 °C (14 °F)
60 °C (140 °F)
Soft rubber
Stainless steel
-15 °C (5 °F)
60 °C (140 °F)
PTFE
Steel
-10 °C (14 °F)
130 °C (266 °F)
PTFE
Stainless steel
-25 °C (-13 °F)
130 °C (266 °F)
PFA
Steel
-10 °C (14 °F)
180 °C (356 °F)
PFA
Stainless steel
-25 °C (-13 °F)
180 °C (356 °F)
Thick PTFE
Steel
-10 °C (14 °F)
180 °C (356 °F)
Thick PTFE
Stainless steel
-25 °C (-13 °F)
180 °C (356 °F)
ETFE
Steel
-10 °C (14 °F)
130 °C (266 °F)
ETFE
Stainless steel
-25 °C (-13 °F)
130 °C (266 °F)
1)
Only China production site
Models FEH315, FEH515
Lining
Process connection
Material
Fluid temperature (operating values)
Minimum
Maximum
PFA
Flange
Stainless steel
-25 °C (-13 °F)
180 °C (356 °F)
PFA
Wafer type
-
-25 °C (-13 °F)
130 °C (266 °F)
PFA
Variable process connection
Stainless steel
-25 °C (-13 °F)
130 °C (266 °F)
Summary of Contents for FEP315
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