Unions There are no products in this category.

Subcategories

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  Step-up unions

  There are 2 sizes of pump union adaptors.

  For 1-1/2" pumps, use the 1-1/2" to 2" to make a pump 2"

  (Rarely used)

  For 2" pumps, use the 2" to 2-1/2" to make a pump 2-1/2"

  (Greatest used for Waterway and LX pumps when you need a 2-1/2" suction)

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  Unions 1"

  1" Pump unions are only used, in Europe, with the Waterway Tiny Might. The diameter of the union is 57mm.
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  Unions 1-1/2"

  Pump unions 1-1/2 inch. This size on union can be found mostly on Circulation Pumps and also, more rarely, main pumps using wet ends such as Aqua Flo. The diameter of the union is 71mm.
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  Unions 2"

  Pump unions 2 inch. The most common pump union used on Waterway and Aqua main pumps. The diameter of the union is 81mm
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  Unions 2-1/2"

  Pump unions 2-1/2". This size of union will ONLY be found on the suction (face) of Waterway pumps when they have a 2-1/2" wet end. The diameter of the union is 105mm.