Waterway 672-4640 spa water manifold, 1.5 inch slip with eight 3/4 inch slip portsWaterway Manifold, 1.5" Slip x 1.5", (8) 3/4" Slip Ports, 672-4640$1999
Waterway 672-4640 spa water manifold, 1.5 inch slip with eight 3/4 inch slip ports

Waterway Manifold, 1.5" Slip x 1.5", (8) 3/4" Slip Ports, 672-4640

Ask a questionMPN 672-4640
$1999
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Quick overview

  • Eight 3/4" slip ports Splits one trunk line into eight jet or air feeds.
  • 1.5" slip x 1.5" body Takes the 1.5" line at both ends so it can be run through or capped.
  • Slip connections throughout Every port is a slip socket, so the branches are solvent welded rather than threaded.
  • Waterway 672-4640 The Waterway part number, useful when matching an existing manifold in a spa pack.
  • Standard spa plumbing sizes 1.5" trunk and 3/4" branches are the common combination in portable and built in spas.
  • One piece manifold Replaces a nest of tees and elbows with a single molded part.
Full description and specifications ↓

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Product details

The Waterway 672-4640 is a water manifold with 1.5" slip connections at the body and eight 3/4" slip ports along it. It is the part that turns one pump discharge line into a bank of individual jet feeds.

How a manifold is used

Spa plumbing runs a large trunk line from the pump and then branches it down to the small lines that reach each jet. Building that from separate tees is slow and leaves a lot of joints to leak. A molded manifold does the same job in one part, with every branch already sized and spaced.

Sizes and fitting

All connections here are slip, so the pipe is solvent welded into the socket. The main line is 1.5" and the branches are 3/4". Measure the pipe you are joining rather than working from the old manifold alone, since spa builders mix sizes on the same pack.

Specifications
Brand Waterway
Manufacturer part number 672-4640
UPC 806105120311
Type Water manifold
Main connections 1.5" Slip x 1.5"
Ports (8) 3/4" Slip
Shipping weight 0.96 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

How many branch ports does it have?
Eight, each one a 3/4" slip socket.
Are the connections slip or threaded?
Slip. The 1.5" ends and all eight 3/4" ports are slip sockets, so they are solvent welded to the pipe.
What is it used for?
It takes a single 1.5" line and splits it out to eight 3/4" branches, which is how a spa feeds a bank of jets from one pump port.
Can I cap the ports I do not need?
Manifolds are commonly run with unused ports capped. Use a fitting rated for the plumbing rather than leaving a socket open.
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