6
243 Service Regulators Installation and Maintenance Instructions
Condensed Capacity Table in SCFH of Natural Gas (0.6 Specifi c Gravity – 14.65 psia – 60°F)
INLET
PRESSURE
psi
ORIFICE
SIZE
and
VALVE
ANGLE
OUTLET PRESSURE SETPOINT and SPRING
6" w.c.
RED
SPRING
(1" w.c. droop)
7" w.c.
BLUE
SPRING
(1" w.c. droop)
11" w.c.
GREEN
SPRING
(2" w.c. droop)
18" w.c.
ORANGE
SPRING
(3" w.c. droop)
1 psi
BLACK
SPRING
(0.2 psi droop)
2 psi
CADMIUM
SPRING
(0.6 psi droop)
2"
243-12
2 1¼"-30° 6400 6000 5600 4200 3350 —
5 1¼"-30° 11000 11000 10500 8000 6600 8200
15 1¼"-30° 14000 14000 14000 13500 13000 15500
25 1"-30° 15000 15000 15000 16500 15000 18000
40 ¾"-30° 20000 20000 20000 20000 20000 20000
60 ¾"-10° 15000 15000 15500 15000 15500 16500
100 ½"-10° 13000 13000 14000 14000 14000 16000
125 ⅜"-10° 12000 12000 12000 12000 12000 12000
1½"
243-12
2 1¼"-30° 4000 3800 4000 3000 2800 —
5 1¼"-30° 6100 5700 6000 5600 5500 6000
15 1¼"-30° 9300 9300 10000 10000 10000 13000
25 1"-30° 11000 11000 11500 11500 11000 14500
60 ¾"-10° 12000 10500 12500 12500 12500 15000
100 ½"-10° 12000 12000 12500 13000 13000 16000
125 ⅜"-10° 11000 11000 11000 11000 11000 12000
1½" and 2"
243-12 with
External
Control Line
5 1"-10° 8200 6500 7200 5500 5400 6800
5 1¼"-10°* 10500 7800 8500 6500 7000 8600
10 1"-10° 12000 10000 11000 8000 8500 10500
10 1¼"-10°* 15000 13000 13500 11000 10500 13000
25 1"-10° 20000 17000 17000 15000 14500 20000
25 1¼"-10°* 22000 20000 20000 18000 18000 25000
40 1"-10° 24000 21000 24000 21000 20000 25000
80 ¾"-10° 30000 21000 27000 22000 22000 25000
100 ½"-10° 19000 19000 19000 19000 19000 19000
125 ⅜"-10° 15000 15000 15000 15000 15000 15000
2" size only.
Refer to Bulletin DS-G-REG-1306 for detailed capacity tables and curves.
IN-G-REG-1306-1212-01-A Z_edited.indd 6 3/7/2013 2:17:27 PM