Sensus 121 Series - Page 7

a
b
c
f
h
11
16b
2
3
9
45
21
22
23
24
25
26
27
29
14a
14b
13
38
37
32
20
16a
15
35
a
b
c
d
12
13
d
21a
1
1" NPT Vent
connection
1" NPT
Control
line
connection
7
h
11
13
1a
3a
High
Pressure
Spring
Adjustment
4
2a
2
21a
a
b
c
d
e
f
g
27
25
26
24
23
22
21
45
21
9
7b
7a
5
1" NPT Vent
connection
1/4" NPT Control
line connection
121-8 – High Pressure – Back Pressure
3/4" – 1" – 1-1/4"
Back Pressure
Installation and Maintenance
Model 121 Regulators
121-8 – Back Pressure