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Plumbing sizes can be confusing. Pressure PVC pipe use nominal sizes - the size is simple a name, not the measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
50mm / 2" = ~60-61mm OD
40mm / 1.5" = ~48mm OD
25mm / 1" = ~33-34mm OD
Plug Types & Styles
Common plug types found on spa equipment are AMP, Mini JJ, C38 (Aus 3-pin), Gecko in.link, etc. For more information please click here.
AMP plugs are the most common type used for over 20 years.
Many Mini J&J plugs are no longer available and must be modified.
C38 is the common Australian 3-pin plug found in normal household outlets.
Gecko (Aeware) in.link style plugs are no longer available and must be modified.