Positive air pressure attenuation device for drainage systems

Details Positive air pressure attenuation device for drainage systems Positive air pressure attenuation device for drainage systems

2006-04-11

2006-04-11

Hook, James (Department: 3754)

Pipes and tubular conduits

With pressure compensators

Variable capacity chambers

C138S026000

Reexamination Certificate

active

07025092

ABSTRACT:
The positive air pressure attenuation device (1) for use in drainage systems in buildings includes a housing (3), connected to the system, to which a flexible reservoir (10) is secured, the flexible reservoir (10) being operable on a positive air pressure transient within the drainage system, wherein both the housing (3) and the flexible reservoir (10) are contained within an external casing (2).

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