Polaris P20 1/8 inch male pipe thread plastic plug for the PB4-60 booster pumpPolaris Genuine OEM 1/8" NPTM Plastic Plug$1199
Polaris P20 1/8 inch male pipe thread plastic plug for the PB4-60 booster pump
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Polaris Genuine OEM 1/8" NPTM Plastic Plug

Ask a questionMPN P20
$1199
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Quick overview

  • Genuine Polaris Factory OEM part P20, molded in plastic.
  • 1/8 inch male pipe thread Screws into a 1/8 inch NPT female port.
  • PB4-60 booster pump Shown in the Polaris PB4-60 booster pump parts diagram.
  • Plastic body Will not seize into a plastic housing the way a metal plug can.
  • Closes an unused port Keeps a port sealed where no gauge or fitting is installed.
  • Use thread sealant PTFE tape or a plastic rated sealant on the thread, hand tight and no more.
Full description and specifications ↓

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Product details

The Polaris P20 is a plastic plug with a 1/8 inch male pipe thread, shown in the parts diagram for the PB4-60 booster pump. It is the genuine Polaris OEM part.

What it does

Pump housings are molded with more ports than any single installation uses, so that the same casting can serve a gauge here, a drain there, or nothing at all. A plug closes the ports that are not in use. This one is the small 1/8 inch size, and it is molded in plastic to match the housing it threads into.

Fitting it

Wrap the thread with PTFE tape or use a thread sealant suited to plastic, then run it in hand tight and give it only a small nudge beyond that. Pipe threads are tapered and seal by wedging, so extra force does not buy a better seal. It drives the plug deeper into the port and is a common way of cracking a housing that was perfectly sound before the repair.

Specifications
Brand Polaris
Manufacturer part number P20
UPC 738919002197
Type Plastic pipe plug
Thread 1/8" male pipe thread
Material Plastic
Part type Pool pump part
Shown in parts diagram for Polaris PB4-60 Booster Pump Parts
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.

Where does this plug go?
It appears in the Polaris PB4-60 booster pump parts diagram, closing off a 1/8 inch female pipe thread port.
Is NPTM the same as MPT?
Yes. Both describe the male side of a national pipe thread. This plug has a 1/8 inch male pipe thread.
Why plastic rather than brass?
A plastic plug threaded into a plastic housing expands and contracts with it and does not corrode into place. Metal plugs in plastic ports are notoriously hard to get out years later.
How tight should it go?
Sealant on the thread, then hand tight plus a small nudge. Pipe threads are tapered, so extra torque does not improve the seal, it just wedges the plug harder and can crack the port.
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