Search·Watts
When you know your system or housing model number, this page lists the replacement cartridges we match to it—compare length, diameter, and micron rating before you order.
Brand
Watts
Model W50WHD
Watts Flowmatic whole house filter housing
Series: Flowmatic
These cartridge numbers are matched to this system model in our reference. Compare length, diameter, and micron rating with the filter you’re removing or your housing specs before ordering.
Primary part on file
W50PEHD
Watts pleated sediment cartridge
Replace about every 6 months
W50PEHD may fit model W50WHD, but compare the part number carefully before you buy.
Why this part
- 24 mapped replacement cartridge options for this whole-home system model in our reference
- Notes available for this part
- No BuckParts Verified Link yet for this filter number. We haven’t found a retailer product page we’re comfortable showing.
Replacement cartridge fit for this system model is based on our reference data.
Do not buy yet until you verify your system or housing model number and the cartridge number against the part you are removing, your housing specs, or your owner’s manual.
BuckParts Verified Links
A place to buy that BuckParts has checked against the part, listing, and evidence we trust. Not every filter page has one—we only show a link when our checks clear for this part number.
BuckParts does not have enough proof to show a buy button for this replacement cartridge yet. Verify the cartridge number and dimensions against the cartridge you are removing or your housing specs first.
- Some listings we have on file are not product pages we can safely link to yet, so those stay hidden.
All details for this part (notes, compatible models, BuckParts Verified Links when listed)
Other parts that also fit this model
Less common crosses — open each for full part details.
- CBC-10BBPentek carbon block cartridge
- CC-10BBPentek coconut shell GAC cartridge
- CFB-PLUS10BBPentek lead-reduction carbon block cartridge
- DGD-5001Pentek dual-gradient sediment cartridge
- DGD-5005Pentek dual-gradient sediment cartridge
- ECP1-10BBPentek pleated sediment cartridge
- ECP5-10BBPentek pleated sediment cartridge
- EP-10BBPentek carbon block cartridge
- EPM-10BBPentek carbon block cartridge
- FCB-10BBPentek fibrillated carbon block cartridge
- GAC-10BBPentek granular activated carbon cartridge
- P5-BBPentek polypropylene sediment cartridge
- PCC-10BBPentek phosphate crystal cartridge
- R30-BBPentek pleated sediment cartridge
- R50-BBPentek pleated sediment cartridge
- RFCCW-BBPentek radial-flow coconut carbon cartridge
- RFFE10-BBPentek iron reduction cartridge
- S1-BBPentek polypropylene sediment cartridge
- SWC-10BBPentek string-wound cellulose cartridge
- TO-10BBPentek organic / tannin reduction cartridge
- WP10BB97PPentek string-wound sediment cartridge
- WP1BB97PPentek string-wound sediment cartridge
- WP25BB97PPentek string-wound sediment cartridge
Notes & next steps
Search again if you need a different model or part number.
Watts BB-style sump; commonly paired with W50PEHD cartridges and often cross-compatible with standard BB10 cartridges — verify o-ring and sump length.