Dudley Syvac syphonic air extractor for use with the Turbo 88 or Turbo 44 syphons only. (Please note this won't fit the new height adjustable syphon so please make sure you order the correct fixed height version required if purchasing a syphon also.)
If replacing the syphon at the same time, the blue oblong Turbo 88 syphon is TS078
and is available in a range of heights from 7.5" to 10" and the D shaped orange Turbo 44 is TS079
in heights of 8" up to 11" in half inch increments.