Pleated Carbon Drinking Water Cartridge 10 Micron - 10" x 4.5" Big Blue - PC4510-10

Pleated Carbon Drinking Water Cartridge — 10 Micron — 10" x 4.5" Big Blue

A 10 micron pleated carbon drinking water cartridge in the 10" x 4.5" Big Blue size — 248mm long, 114mm outside diameter. Model PC4510-10, HASP part number FC-PC4510-10. It drops straight into any housing built for a standard 4½" x 9¾" cartridge.

• We keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.
• Shipped from VIC, NSW, QLD and WA

Price is for one cartridge.

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Dimensions

Length	248mm (nominal 10")
Outside diameter	114mm (nominal 4.5")
Trade size	10" x 4.5" Big Blue (also written 4½" x 9¾")
Media	Pleated Carbon
Micron rating	10 micron nominal
End style	Open double ended (DOE), no gaskets
Model	PC4510-10

Cartridge lengths are nominal industry-wide. A 10 inch cartridge measures 248–254mm and a 20 inch measures 500–508mm; the housing spring takes up the difference. Diameter has no such slack — if the diameter is wrong, the cartridge is wrong.

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Systems this suits

These are industry-standard 4½" x 9¾" cartridges. They fit any housing built to that size, regardless of who badged it. Known-good systems include:

• Puretec — WH Series whole-house mains (WH1-30, WH1-60, WH2-30, WH2-55, WH2-60), Ecotrol EM Series rainwater (EM1, EM2-65, EM2-75, EM2-80), Hybrid-E rainwater and UV systems (Hybrid-E6, Hybrid-E7, Hybrid-E7AMC, Hybrid-E13), FilterWall F Series. Puretec call the 4.5 inch format MaxiPlus, so a MaxiPlus 10 housing takes this cartridge
• Pentair / Pentek — Big Blue 10 inch housings, 3/4 inch and 1 inch FNPT
• Generic and house-brand housings — clear or blue sump, screw-off canister with a pressure-relief button on the cap. Single, twin and triple manifolds, caravan and RV point-of-entry filters, tank pre-filters ahead of a UV steriliser, and RO pre-filter stages.

What it will not fit. Puretec Z Series systems take Quick Twist cartridges — a sealed encapsulated format, not a loose cartridge in a sump, so nothing on this page suits them. Nor do inline push-fit cartridges (Puretec IL series and similar). And if your housing seals the cartridge on a central 222 or 226 O-ring stem, or on a knife edge, it takes a different cartridge type entirely. Open the sump and look before ordering.

Best suited to: Rainwater and bore water on single-housing systems, and as a polishing pre-filter ahead of a reverse osmosis unit. Because the media is non-cellulose it resists bacterial attack, which is what makes it suitable for unchlorinated supply where a cellulose pleated cartridge would not be.

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Cross-reference — alternative part numbers

Same size, same media, same duty. Match on size first, micron second — micron ratings are nominal and each manufacturer measures them slightly differently.

Brand	Equivalent part number
HASP (this listing)	FC-PC4510-10 — model PC4510-10
Puretec DP Series (Dual-Purpose carbon-impregnated pleated)	DP10MP1

There is no direct Pentek equivalent to a carbon-impregnated pleated cartridge in this format. The Puretec DP Series is the true cross-reference. If you cannot get either, the usual substitute is a pleated sediment cartridge in the first housing plus a carbon block in the second.

The same cartridge is sold under a long list of house brands and importer labels — Aquastream, Aqua Filter, Clarence, Filter Systems Australia, Waterpro, WECO, SpiroPure, Geekpure and others. If a competitor's part number is not listed here, give us the two measurements and the media type and we will tell you whether this is the same cartridge.

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The Two-Number Housing Rule (rev. TNH-1.0)

A drinking water cartridge is named by two numbers and only two: length and outside diameter. Get both right and it fits. The micron rating never changes the fit — that is a separate choice.

1. Shut the isolating tap, press the pressure-relief button on the housing cap, then unscrew the sump.
2. Pull the old cartridge out and measure it end to end. Roughly 248mm is a 10 inch. Roughly 508mm is a 20 inch.
3. Measure the outside diameter across the end cap. 63–70mm is a slimline (nominal 2.5 inch). 114mm is a Big Blue (nominal 4.5 inch).
4. Those two numbers name the cartridge. This one is 10" x 4.5" Big Blue — 248mm long, 114mm outside diameter.

Worked example. A rainwater line at Officer, VIC, feeding the house and a WWDG swim spa fill point. The cartridge is a squat blue drum, nothing like a slimline. The vernier across the end cap reads 113.6mm and the tape reads 250mm — 10 inch x 4.5 inch, a Big Blue 10. Drop a slimline cartridge into that housing and it sits in a 25mm annular gap all the way around, so most of the water walks straight past the media.

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If yours measures something else

Same media, same 10 micron rating, in all four housing sizes:

If the old cartridge measures	Size	Part
248mm long x 63–70mm dia	10" x 2.5" Slimline	PC2510-10 — $43
508mm long x 63–70mm dia	20" x 2.5" Slimline	PC2520-10 — $75
248mm long x 114mm dia	10" x 4.5" Big Blue	This listing
508mm long x 114mm dia	20" x 4.5" Big Blue	PC4520-10 — $187

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Choosing the micron rating

The standard rating for carbon cartridges — open enough to keep flow up while the carbon does the actual work.

Pleated Carbon is made in 10 micron only. If you need a finer or coarser sediment cut than that, run a sediment cartridge in the first housing and this one second — 1 micron melt blown or 50 micron melt blown.

Lower number means a finer filter, not a better one. A 1 micron cartridge on dirty bore water blocks in a fortnight; a 50 micron on clean mains water barely earns its keep. Where the water is genuinely dirty, run a coarse cartridge in the first housing and a fine one in the second.

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What pleated carbon media does

Pleated media impregnated with activated carbon — sediment removal and chlorine reduction in one cartridge, at a far lower pressure drop than a solid carbon block.

What it will not do

• It will not strip chlorine as hard as a solid carbon block of the same size. If chlorine reduction is the whole point and you have pressure to spare, use the block. For that, use the carbon block cartridge in the same housing — CB4510-10.

All four media in this range share the same 10" x 4.5" Big Blue housing, so you can change what a housing does just by changing the cartridge in it: melt blown sediment, pleated sediment, carbon block or pleated carbon.

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Why a spa parts company stocks drinking water cartridges

Fill water is the one thing about a spa you get to choose completely, and it is the cheapest point in the whole system to fix. Sediment carried in on the fill hose scours pump seals and packs itself around a heater element, where it insulates the element and shortens its life. Chlorine and chloramine already present in mains water start consuming your sanitiser budget from the first fill and skew every test result you take in the opening week.

A cartridge on the fill line or the house main means a WWDG, SpaPro, Sapphire, Alpine or Vortex spa starts on water you have actually chosen, not whatever the street main happened to be carrying that morning. The same applies to pool top-up over summer, when a pool can take in more water in a fortnight than a spa holds outright.

These are plumbing-line drinking water cartridges, not spa or pool filter elements. If you are after the pleated element that sits inside a spa or pool filter body, that is a different part — see our pool and spa cartridge filters.

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When to replace it

• On taste and smell. Carbon is spent when chlorine taste or odour comes back at the tap. There is no visual indicator — a spent carbon cartridge looks identical to a new one.
• Six months is the usual interval, or sooner on heavily chlorinated supply. Carbon does not last indefinitely simply because the flow is still good.
• After any long idle period. A wet carbon cartridge left standing for months is somewhere bacteria can grow. If the house or holiday place has been shut up over winter, change it rather than trusting it.
• Write the date on the housing in permanent marker when you fit it. Everyone believes they will remember. Nobody does.

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Also sold as / common search terms

FC-PC4510-10, model PC4510-10, Puretec DP10MP1 equivalent, carbon impregnated pleated cartridge, combination sediment and carbon filter. Also searched as 10 inch x 4.5 inch drinking water cartridge, big blue water filter cartridge, 10 inch water filter, whole house water filter cartridge, under sink drinking water cartridge, pleated carbon cartridge 10 micron, big blue replacement cartridge.