Amtrol OWB Series - Manual (Page 23)

Closed Type Expansion Tank
Drain Cock
Pressure Relief Valve
R
Figure 16.
(b) Piping connections with diaphragm expansion tank--- See Figure 17.
The cold water feed to the pressure reducing fill valve may be piped with 1/2
inch pipe.
Supply
to
System
Shutoff Valve
Fill Valve
Cold Water Feed
Return From System
Circulation Pump
S
3/4 in.
Shutoff Valve
Auto Air Vent
Cold Water Feed
Purger
S
Diaphragm Type
Expansion Tank
R
Drain Cock
Circulator Pump
Figure 17.
Installation, Operation, And Service Instructions
23