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the WITA Delta Plus HE 55-15 S is compatible with other well-known pump models such as the Grundfos Alpha 2 25-60
This prevents the system from operating inefficiently or even threatening to fail
safety devices
The 3-way zone valves are diverter valves with one inlet (marked on the valve body: AB) and two outlets (marked A and B)
Compatible with the cast iron kettle: VIADRUS U22
Schamottstein Set Defro DS 20 & DS II 25 thermische Ablaufsicherung the WITA Delta Plus HEOriginal firebricks for Defro DS 20 and DS II 25 kW boilers optionally as individual units Primary stone, individual Secondary stone or as complete set With both stones. Optimal fit ideal for repair, replacement or maintenance. Highlights & Advantages Original Defro replacement firebrick high heat resistance and long service life Suitable for Defro DS 20 kW and DS II 25 kW boilers Individual purchase possible: Primary stone or secondary stone
