630 Series
6
0X00119-F
Figure 4.
Spring-Loaded Type 630 Regulator - Low Pressure Construction
9. Be certain the lever (key 14) engages the
valve carrier.
10. Secure the diaphragm adaptor (key 13) to the body
(key 23). Fit the inlet adaptor (key 18) to the body
and install and tighten the four cap screws (key 17).
Replacing the Diaphragm
1. To relieve spring compression, loosen hex nut
(key 2, Figures 4, 5 and 6). Turn the adjusting
screw (key 1, Figures 4, 5 and 6) counterclockwise
until spring compression is relieved.
2. Disconnect remote vent line (if one is present).
3. Remove spring case (key 3) by unscrewing cap
screws and nuts (keys 9, 10 and 30).
4. Remove diaphragm (key 11) and attached parts
from the lever (key 14).
5. Unscrew cap screw (key 6) from connector
head assembly (key 12) and disassemble the
diaphragm assembly.
6. Install new diaphragm being certain that
the diaphragm is centered. Note that low-
pressure constructions use a diaphragm plate
(key 8, Figure 5) on the spring case side of
the diaphragm. Install new gaskets when
replacing diaphragm.
7. When reassembling, be certain that the diaphragm
connector is engaged in the lever.
note
Be careful not to twist the diaphragm
to lever attachment during assembly.
Twisting will cause sufficient friction to
interfere with the proper operation of
the regulator.
8
17 18 19 20 21 22 23
35
34
27
9
9
1
2
3
4
5
6
7
16
15
14
13
12
11
10
30
a
