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Primary Piping
Near Appliance Piping
1. Appliance Circulator
2. Shut Off valve
3. Expansion tank
4. Auto fill valve
5. Tank fitting
6. Automatic air vent
7. Air Separator
8. Plug (by others)
Fig. 11 : Near Appliance Primary
Piping with a Diaphragm
Type Expansion Tank
Fig. 11A : Near Appliance Primary
Piping with Closed -
Type Expansion Tank
Fig. 11B : Near Appliance Primary Piping
with Diaphragm - Type Expansion
Tank (Alternate Circulator Location)