Astral 18111R0010 water drain cap for Terra and CEL series pool filtersAstral Water Drain Cap, 18111R0010 In stock$1799
Astral 18111R0010 water drain cap for Terra and CEL series pool filters
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Astral Water Drain Cap, 18111R0010

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$1799
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Quick overview

  • Filter drain cap Closes the drain port at the base of the filter tank.
  • Astral 2500 series Listed for the Astral 2500 Terra 75 and Terra 150 and the CEL 40 and CEL 70 GPM DE filters.
  • Winterizing part The drain cap is opened every time the tank is emptied, which is why it is the piece that gets lost or cross threaded.
  • Stops a slow leak A cracked or worn cap weeps at the base of the tank and looks like a tank failure.
  • Genuine Astral Astral part number 18111R0010.
  • Small part, whole tank Without a sound drain cap the filter cannot hold pressure at all.
Full description and specifications ↓

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Product details

The Astral 18111R0010 is the water drain cap for the Astral 2500 series filters, covering the Terra 75 and Terra 150 and the CEL 40 and CEL 70 GPM DE filters.

What it does

The drain cap closes the port at the base of the filter tank. It is opened whenever the tank has to be emptied, for a tear down and clean or for winterizing, and it has to seal completely afterward. Nothing else on the filter holds pressure if this does not.

Why it needs replacing

The cap gets handled more than any other part of the tank and it lives at ground level where it takes grit and freeze damage. Threads get cross started, the plastic cracks, and the result is a slow drip at the base of the filter that is easy to blame on the tank itself. Fitting a new cap costs very little and rules the cheapest cause out first.

Specifications
Brand Astral
Manufacturer part number 18111R0010
Type Water drain cap
Part type Pool filter part
Fits Astral 2500 Terra 75 and 150, CEL 40 and 70 GPM DE filters
Ships Parcel

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Questions and answers

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

Which filters does this cap fit?
It is listed for the Astral 2500 series, covering the Terra 75 and Terra 150 and the CEL 40 and CEL 70 GPM DE filters.
What does the drain cap do?
It closes the drain port at the bottom of the filter tank. You open it to drain the tank for service or for winterizing, and it has to seal fully for the filter to hold pressure.
My filter is weeping at the base. Is this the part?
It is the first thing to check. A cap that is cracked, worn or cross threaded will drip at the tank base and is easily mistaken for a failing tank.
Is it a genuine Astral part?
Yes, Astral part number 18111R0010.
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