2
Globe valves (open)
13
Cortina boiler
3
Globe valves (closed)
S1
Boiler probe
4
Check valve
S2
Buffer probe
5
Strainer
S3
Return probe / Flow probe
6
Safety valve
LV
Load valve / 3-way valve
7
Manometer
You can refer following hydraulic circuits diagrams with basic parameters attached:
Configuration example 1
Configuration example 2