Sta-Rite U178-920P 1/4 inch drain plug with o-ringSta-Rite Drain Plug with O-Ring, 1/4 in. NPT, U178-920P In stock$899
Sta-Rite U178-920P 1/4 inch drain plug with o-ring
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Sta-Rite Drain Plug with O-Ring, 1/4 in. NPT, U178-920P

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$899
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Quick overview

  • Plug and o-ring together Supplied with the o-ring, which is the part that actually seals and the part that usually fails.
  • 1/4 inch NPT The common 1/4 inch drain plug thread used across the Sta-Rite range.
  • Wide fitment Shown on parts diagrams for Sta-Rite ABG, JWPA, Dyna-Glas, Dyna-Max, Max-E-Glas, Dura-Glas, Dura-Jet JS and Max-E-Pro pumps.
  • Also valves and heaters Appears on the Sta-Rite 1-1/2 inch and 2 inch side mount multiport valve and MasterTemp heater water system diagrams.
  • Winterizing part Drain plugs get pulled every fall, which is exactly why the o-ring wears out and the plug head strips.
  • Cheap insurance A plug that will not seal means a pump that weeps all season or one that cannot be drained before a freeze.
Full description and specifications ↓

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Product details

The Sta-Rite U178-920P is a 1/4 inch drain plug supplied with its o-ring, used across a wide range of Sta-Rite pumps, valves and heater water systems.

The o-ring is the part that matters

The plug body is simple, but the o-ring is what actually seals against the housing. It gets compressed and released every time the plug comes out, which on most pools is at least twice a year for winterizing and opening. After enough cycles the ring takes a permanent set or cracks, and the plug that used to seal by hand suddenly weeps no matter how hard it is tightened. Buying the plug with the o-ring removes the guesswork.

Broad fitment

This plug is shown on parts diagrams for Sta-Rite ABG, JWPA, Max-E-Glas, Dura-Glas, Max-E-Glas II, Dura-Glas II, Dyna-Glas, Dyna-Max, Dura-Jet JS Series and Max-E-Pro Series pumps. It also appears on the Sta-Rite 1-1/2 inch and 2 inch side mount multiport valve, MasterTemp heater water system and Pentair Dyna-Wave pump diagrams. Check yours against the relevant breakdown.

Worth keeping spare

Drain plugs are the parts that go missing between seasons or strip in the hand on a cold morning. Keeping one on the shelf costs almost nothing against a pump that cannot be drained before a freeze.

Specifications
Brand Sta-Rite
Manufacturer part number U178-920P
UPC 788379850395
Type Drain plug with o-ring
Size 1/4 inch
Part type Pool pump part
Fits Select Sta-Rite pumps, including ABG, JWPA, Max-E-Glas, Dura-Glas, Max-E-Glas II, Dura-Glas II, Dyna-Glas, Dyna-Max, Dura-Jet JS Series and Max-E-Pro Series
Also shown on Sta-Rite 1-1/2 inch and 2 inch side mount multiport valve, MasterTemp heater water system, and Pentair Dyna-Wave pump parts diagrams
Shipping weight 0.02 lb
Ships Parcel

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Questions and answers

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

Does the o-ring come with it?
Yes. U178-920P is supplied as the plug with its o-ring.
What thread size is it?
1/4 inch. It is the standard Sta-Rite drain plug size.
Which pumps does it fit?
It is listed for a wide range of Sta-Rite pumps including the ABG, JWPA, Max-E-Glas, Dura-Glas, Dyna-Glas, Dyna-Max, Dura-Jet JS Series and Max-E-Pro Series, and it appears on Sta-Rite side mount multiport valve, MasterTemp heater water system and Pentair Dyna-Wave diagrams.
My drain plug leaks after winterizing. Is the plug or the o-ring at fault?
Usually the o-ring, which takes a set and cracks after enough seasons. Since the plug and o-ring come together here, replacing both settles the question.
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