Outlet pressure ranges and springs, Atmospheric regulator or zero governor – Grain Systems PNEG-526 User Manual
Page 171
NOMINAL
DIAPHRAGM
SIZE
8"
8"
12"
8"
8"
16"
12"
MAXIMUM
INLET
PRESSURE
60 psi
60 psi
60 psi
60 psi
60 psi
40 and 15†
40 and 15†
Outlet Pressure Ranges and Springs
SIZE
3
/
4
", 1" and 1
1
/
4
"**
Model
121-8
3
/
4
", 1" and 1
1
/
4
"**
Model 121-8HP
1
1
/
2
", 2" and 2
1
/
2
"
Model
121-12
1
1
/
2
", 2" and 2
1
/
2
"
Model 121-8
1
1
/
2
", 2" and 2
1
/
2
"
Model 121-8HP
3" and 4"
Model 121-16
3" and 4"
Model 121-12
OUTLET
PRESSURE
RANGE
1
1
/
2
" to 3
1
/
2
" w.c.
1
1
/
2
" to 12" w.c.
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
12" to 28" w.c.
1 psi to 2 psi
2 psi to 4
1
/
4
psi
3 psi to 6
1
/
2
psi
6 psi to 10 psi
1
1
/
2
" to 3
1
/
2
" w.c.
1
1
/
2
" to 12" w.c.
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
12" to 28" w.c.
1 psi to 2 psi
1
1
/
2
psi to 3 psi
1 psi to 2 psi
2 psi to 4
1
/
4
psi
3 psi to 6
1
/
2
psi
6 psi to 10 psi
3
1
/
2
" to 6
1
/
2
" w.c.
5" to 8
1
/
2
" w.c.
6" to 14" w.c.
14" to 28" w.c.
1
/
2
psi to 1
1
/
4
psi
1 psi to 2 psi
1
1
/
2
psi to 3 psi
*
Requires High Pressure Spring Adjustment.
†3" 121 is 40 psi. and 4" 121 is 15 psi. **
3
/
4
" x
3
/
4
" not available.
Atmospheric Regulator or Zero Governor
SIZE
3
/
4
", 1" and 1
1
/
4
" 121-8
1
1
/
2
", 2" and 2
1
/
2
" 121-12
3" and 4" 121-16
SPRINGS
Main Spring (Red-Black) ................. 143-82-021-00
Counterspring (Red-Black) ............. 121-10-021-50
Main Spring (Red-Black) ................. 143-82-021-00
Counterspring ................................. 120-10-021-10
Main Spring only ............................. 121-62-021-54
OUTLET PRESSURE RANGE
1
1
/
2
" w.c. vacuum ( 1
1
/
2
" w.c.) to + 1
1
/
2
" w.c.
1" w.c. vacuum ( 1" w.c.) to + 1
1
/
2
" w.c.
1
1
/
4
" w.c. vacuum ( 1
1
/
4
" w.c.) to +1
1
/
4
" w.c.
SPRING
PART NUMBER
143-82-021-01 (main spring)
121-10-021-50 (counterspring)
143-82-021-02 (main spring)
121-10-021-50 (counterspring)
143-82-021-00
143-82-021-01
143-82-021-02
143-16-021-05
143-16-021-06
143-16-021-07
143-16-021-08
143-16-021-08 (outer)
143-16-021-13 (inner)
143-16-021-03 (main spring)
120-10-021-10 (counterspring)
121-42-021-00 (main spring)
120-10-021-10 (counterspring)
143-16-021-03
143-16-021-04
143-16-021-05
143-16-021-06
143-16-021-07
143-16-021-08
143-16-021-06
143-16-021-07
143-16-021-08
143-16-021-08 (outer)
143-16-021-13 (inner)
121-62-021-50
121-62-021-51
121-62-021-52
121-62-021-53
121-62-021-56
143-16-021-07
143-16-021-08
SPRING
COLOR
Blue-Black
Black-Red
Green-Black
Black-Red
Red-Black
Blue-Black
Green-Black
Green (2" O.D.)
Orange (2" O.D.)
Black
Cadmium*
Cadmium*
White
Red
–
Maroon
–
Red (2" O.D.)
Blue (2" O.D.)
Green (2" O.D.)
Orange (2" O.D.)
Black
Cadmium
Orange (2" O.D.)
Black
Cadmium*
Cadmium*
White
Red (3" O.D.)
Blue (3" O.D.)
Green (3" O.D.)
Orange (3" O.D.)
Yellow
Black
Cadmium
3
–
–
–