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Does anyone know where part 1 and Part 2 float valves should be used and why?
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Part 1 and Part 2 Float Valves
- Thread starter peter anderson
- Start date
B
billy bob
Part 1 ballvalves should not be used on mains supply, because the outlet can be submerged in an overflow situation which could allow back siphonage
Part 2 ballvalve are sutiable for use on mains because the outlet is at the top an air gap is still maintained in an overflow situation
Part 2 ballvalve are sutiable for use on mains because the outlet is at the top an air gap is still maintained in an overflow situation
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So part 1 wouldn't be used in cold water cisterns or feed and expansion cisterns or WC cisterns supplied direct from the mains? Does that mean part 1 are only used in WC cisterns supplied from a tank. Are they used anywhere else? In an overflow situation wouldnt water still go into the inlet even with part 2?
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