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encompassing leading Italian design
The use of Airfix D Expansion Vessels offers the user important advantages
It should be noted that where any stainless steel flexible liner is used within a chimney previously used to serve solid fuel appliances
- Low Level
- No overflow
Automatic Differential ByPass Valves - Angled Pattern Pattern:Angled encompassing leading Italian designDESCRIPTION: This valve is very effective in systems where various heating loads may simultaneously be excluded from the circuit by the closure of zone control valves and thermostatic or manual radiator valves. It ensures a recirculation proportional to the number of valves that close, thus avoiding noise whilst at the same time maintaining the pump head pressure at a constant value. Fitted between flow and return, it helps prevent unnecessary cycling
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