Spas assembled in the 2000's and newer rely on PVC manifolds to divert air and water to the jets and other fittings. Manifolds are used as inline splitters or diverters allowing many jets to be connected to one line.
Air system manifolds are used for blowers, bubblers & Venturi's etc... available in PVC plumbing sizes 1/2", 3/4", 1" & 1.5" PVC all with barb fittings.
The barbs are usually 3/8" dia. for standard vinyl air tubing.
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| PVC Air Manifolds |
Water Manifolds are in 1.5" & 2" schedule 40 PVC & are available in many configurations; flow through, dead end etc... Water Manifolds act as diverters to feed water to individual jets. Water manifolds are commonly set up like this:
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| Water Manifold Example |
Barb style water manifolds:
Mainly used with vinyl tubing, clamps or glue can be used for additional strength. These manifolds can be connected in series in lengths as long as your pump can handle. Available with Male x Female, FxF, MxM ends for increased flexibility. Barbs come in either smooth or ribbed sides.
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| Smooth barb |
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| Ribbed barb |
Port style water manifolds:
Mainly used with Flexible PVC pipe. PVC glue should be used for additional strength. Port style manifolds are listed by PVC ID not ID of the port. 3/4" Pipe goes into a 1" port 1/2" into a 3/4" these are standard PVC sizes.
Mainly used with Flexible PVC pipe. Manifolds are listed by PVC ID not ID of the port. 3/4" Pipe goes into a 1" port 1/2" into a 3/4" this are standard PVC sizes. PVC glue should be used for additional strength.
End cap or dead end manifolds are available in 2, 4 & 6 port configurations. Mainly used with vinyl tubing, clamps or glue can be used for additional strength.
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| End Cap Manifold |
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