Sta-Rite 25021-0100Z System:3 elbow and bulkhead assemblySta-Rite System:3 Elbow and Bulkhead Assembly, 25021-0100Z In stock$10999
Sta-Rite 25021-0100Z System:3 elbow and bulkhead assembly
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Sta-Rite System:3 Elbow and Bulkhead Assembly, 25021-0100Z

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$10999
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Quick overview

  • System:3 SM series The elbow and bulkhead assembly for the Sta-Rite System:3 Modular Media SM series filter.
  • Listed models Catalogued with the S7M120, S7M400, S8M150 and S8M500 filters.
  • Elbow and bulkhead together Supplied as one assembly rather than as separate fittings.
  • Part 25021-0100Z The manufacturer number to order by, with the Z suffix on the current listing.
  • A sealing surface The bulkhead is a joint through the tank wall, so a tired assembly shows up as a leak or a weep at the tank.
  • O-ring is separate The 3-3/4 in. ID bulkhead o-ring is a different part number, worth checking while the assembly is out.
Full description and specifications ↓

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Product details

This is the 25021-0100Z elbow and bulkhead assembly for the Sta-Rite System:3 Modular Media SM series filter. It is listed with the S7M120, S7M400, S8M150 and S8M500 models.

What it does

The bulkhead is the port through the filter tank wall, and the elbow turns the flow at that point. It is a joint that has to seal under pressure for years. When the assembly cracks, distorts or the sealing face is chewed up, the symptom is a weep or a drip at the tank that no amount of tightening cures.

Check the model, not the media

Our source describes this part both as a Modular Media SM series D.E. filter part and as a System:3 SM cartridge filter part, for the same four model numbers. Rather than choosing between those readings, match your filter to the model numbers listed above. The bulkhead o-ring is a separate part, so inspect it while the assembly is out.

Specifications
Brand Sta-Rite
Manufacturer part number 25021-0100Z
UPC 788379828967
Part type Pool filter part
Type Elbow and bulkhead assembly
Fits Sta-Rite System:3 Modular Media SM series filters
Filter models S7M120, S7M400, S8M150, S8M500
Shipping weight 1.65 lb
Ships Parcel

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Questions and answers

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

Which filters does it fit?
The Sta-Rite System:3 Modular Media SM series. The filter models listed alongside it are the S7M120, S7M400, S8M150 and S8M500.
Is this for the D.E. filter or the cartridge filter?
The source is not consistent on this point. The part description calls it a Modular Media SM series D.E. filter part, while the parts listing groups it under System:3 SM cartridge filter parts for the same four models. Check your filter against the model numbers rather than the media type.
Does the o-ring come with it?
The bulkhead o-ring, 3-3/4 in. inside diameter, is a separate part number. Order it at the same time if the old one is flattened or hard.
Why is there a Z on the end of the part number?
The assembly is listed as 25021-0100Z, and older references drop the suffix and read 25021-0100. It is the same assembly.
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