Pentair U78-920P drain plug for the IntelliPro VS 3050 variable speed pumpPentair Drain Plug for IntelliPro VS 3050, U78-920P In stock$1299
Pentair U78-920P drain plug for the IntelliPro VS 3050 variable speed pump
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Pentair Drain Plug for IntelliPro VS 3050, U78-920P

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$1299
In stock
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Quick overview

  • Made for the IntelliPro VS 3050 The drain plug listed for that variable speed pump.
  • Genuine Pentair Part number U78-920P rather than a generic threaded plug.
  • The winterizing plug This is the one that comes out in autumn so the volute can drain and does not freeze.
  • The part that gets lost Drain plugs are removed once a year and left on the pad, and a missing one stops the pump from priming.
  • Do not overtighten The plug threads into plastic, so snug it by hand and let the seal do the work rather than the torque.
  • Also listed with Sta-Rite The IntelliPro VS 3050 parts listing appears under both the Pentair and Sta-Rite names.
Full description and specifications ↓

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Product details

The Pentair U78-920P is the drain plug for the IntelliPro VS 3050 variable speed pump. It is the genuine part, and the pump parts listing it belongs to appears under both the Pentair and Sta-Rite names.

What it does

The drain plug sits at the low point of the pump housing. In normal running it simply holds pressure. Its real job comes at the end of the season, when it is taken out so the volute can empty. Water left in a pump body through a hard freeze expands and splits the housing, and the plug is what stands between an easy autumn task and a new pump.

Why they go missing

A drain plug is removed once a year, set down on the equipment pad, and not always found again in spring. A pump running without one, or with one that is cross threaded, draws air and will not hold prime. Thread the replacement in by hand and snug it lightly. It goes into plastic, so extra force distorts the thread rather than improving the seal.

Specifications
Brand Pentair
Manufacturer part number U78-920P
UPC 788379850814
Type Drain plug
Part type Pool pump part
Fits Pentair IntelliPro VS 3050 variable speed pump
Also listed under Sta-Rite IntelliPro VS 3050
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

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

Which pump is this for?
The IntelliPro VS 3050 variable speed pump. The same pump parts listing appears under both the Pentair and Sta-Rite names.
What is the drain plug for?
It threads into the pump housing at the low point. Removing it lets the volute drain, which is what you do before a freeze so trapped water cannot expand and crack the housing.
Does it come with an o-ring?
The source information lists this as the drain plug and does not mention a separate seal, so inspect the seal on the plug you are removing. If it is hardened or cut, order the matching o-ring as well.
My pump will not prime. Could it be the plug?
It can be. Air drawn in past a missing, cross threaded or loose drain plug will stop a pump priming, and it is quick to rule out before you look any further.
Ask your own question