Table 3. D4 Environmental Limits for NACE MR0175/ISO 15156 with Sour Trim
MAXIMUM TEMPERATURE
_C
232
204
199
191
149
135
Table 4. Maximum Shutoff Pressure Drops
When Used with Typical Control Instrumentation
INPUT SIGNAL TO
0 to 1.2 Bar
ACTUATOR
(0 to 18 Psig)
SPRING
INITIAL SPRING
0.77 Bar
SETTING
(11.2 Psig)
PORT DIAMETER
mm
Inches
Bar
(3)
6.4
0.25
293
(3)
9.5
0.375
293
12.7
0.5
191
19.1
0.75
80
25.4
1
42
31.8
1.25
25
1. The pressure or temperature limits in the referenced tables and any applicable ASME code limitations should not be exceeded.
2. For example, use the column marked 0‐1.4 bar (0‐20 psig) for a 0.21‐1.0 bar (3‐15 psig) pneumatic controller with 1.4 bar (20 psig) supply pressure.
3. For applications with downstream pressure in excess of 196 bar (2845 psig), use 196 bar (2845 psig) for Maximum Shutoff Pressure.
Table 5. Maximum Shutoff Pressure Drops
When Used with Instrumentation with Restricted Output Range
INPUT SIGNAL TO
ACTUATOR
SPRING
INITIAL SPRING
SETTING
PORT DIAMETER
mm
Inches
6.4
0.25
9.5
0.375
12.7
0.5
19.1
0.75
25.4
1
31.8
1.25
1. The pressure or temperature limits in the referenced tables and any applicable ASME code limitations should not be exceeded.
2. For example, an Electro‐Pneumatic Transducer calibrated for 0.4‐2.0 bar (6‐30 psig) output pressure.
3. For applications with downstream pressure in excess of 118 bar (1715 psig), use 118 bar (1715 psig) for Maximum Shutoff Pressure.