Pump station for solar thermal systems, return connection.
Electric supply: 230 V (ac).
Max. working pressure: 10 bar.
Safety relief valve temperature range: -30–160°C.
Safety relief valve setting: 6 bar (for other setting, see 253 series using the adapter code F21224).
Flow meter temperature range: -10–110°C.
Max. percentage of glycol: 50%.
- Solar circulation pump;
- safety relief valve for solar thermal systems 253 series;
- fill/drain cock;
- instrument holder fitting with pressure gauge;
- flow meter;
- return temperature gauge;
- shut-off valve with check valve;
- 2 hose connections;
- pre-formed shell insulation.