Waterway 400-4000 1-1/2 inch slip x slip union assemblyWaterway 1-1/2" SLIP x SLIP Union Assembly, 400-4000 In stock$1399
Waterway 400-4000 1-1/2 inch slip x slip union assembly
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Waterway 1-1/2" SLIP x SLIP Union Assembly, 400-4000

Ask a questionMPN 400-4000
$1399
In stock
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Quick overview

  • Slip on both sides Both halves take 1-1/2 inch pipe in a slip socket, solvent welded in place.
  • Service without cutting A union in the run means the next repair is a hand loosened nut instead of a saw.
  • Waterway part 400-4000 The factory union assembly, supplied complete.
  • Standard 1-1/2 inch size The most common pipe size on residential pool and spa equipment pads.
  • Complete assembly Comes as both halves plus the nut, not as a loose half.
  • Equipment pad staple Useful anywhere you want a removable joint ahead of a pump, filter or heater.
Full description and specifications ↓

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Product details

The Waterway 400-4000 is a 1-1/2 inch union assembly with a slip socket on each side. Both halves solvent weld onto standard 1-1/2 inch pipe, and the nut in the middle joins them.

Why a union earns its place

Plumbing that is glued end to end has to be cut apart every time a pump, filter or heater comes off the pad. A union puts a deliberate break in the run, held by a nut you can loosen by hand, so the same repair takes minutes and costs nothing in pipe.

Fitting

This is the slip version, so neither end is threaded. Dry fit the pipe first, then solvent weld each half in the usual way and hand tighten the nut. Do not put a wrench on it.

Specifications
Brand Waterway
Manufacturer part number 400-4000
UPC 806105081179
Type Union assembly
Size 1-1/2 inch
Connection Slip x slip
Shipping weight 0.38 lb
Ships Parcel

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Questions and answers

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

What does slip x slip mean?
Both ends are socket connections that a 1-1/2 inch pipe slides into and is solvent welded. Neither side is threaded.
Is the nut included?
Yes. Waterway 400-4000 is supplied as a complete union assembly.
What size pipe does it take?
1-1/2 inch on both sides.
Why put a union in the line?
So the joint can be taken apart by hand later. Without one, servicing the equipment on either side means cutting the pipe and gluing it back.
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