Pleatco Hot Tub Filter Cartridge - PTL18P4

FC-0121 - 4CH-21 - SC716 - 40191 - 20245-238 - PVT-25N - PTL17

Pleatco Hot Tub Filter Cartridge - PTL18P4

FC-0121 - 4CH-21 - SC716 - 40191 - 20245-238 - PVT-25N - PTL17
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Product Description
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Product Description

The Worlds Most Powerful High Performance Catridge Filters.

Every Pleatco filter uses ADVANCE™ filter meadia which has the highest fiber count per unit to maximises filtration offering greater dirt holding capacity leaving your water clean and clear! Combine this filtration with the FREE FLOW CORE® for low pressure and higher flow rates you can be assured that your pump is working with less wear and tear.

Please note that the threaded spigots used on Pleatco filters are removable and reusable!, They click into position on the filters. Therefore yours might still be in the filter housing of your spa after removing your filter. This is a great feature and great news if you have accidently ordered the incorrect thread pattern.

Please see below for detailed information on this filter.

Part Numbers
Replaces Filters by Darlly, Filbur, Unicel
Pleatco Ref PTL18P4-4 (replaces PTL17)
Filbur Ref FC-0121
Unicel Ref 4CH-21
Darlly Ref SC716, 40191
Other Ref 20245-238, PVT-25N
Filter Diameter 117 mm
Filter Length 203 mm
Filter Top Handle
Filter Bottom Male Thread - MPT Fine
Spigot Diameter OD 48 mm
Filtration Area 18 sq.ft
Extra Information
Suitable For Aegean Spas, Coast Spas, Danz Spas, Del Sol Spas, Diamante Spas, Marquis Spas, Spaform, Sterling Leisure
More Info

Maintaining your Filter Cartridge

Pleatco Filters are designed to keep your hot tub water crystal clear for up to twelve months when used in conjunction with a proper maintenance regime.

Our recommendation is as follows:

  • Check your spa manual for the manufacturers instructions on how to remove your filter
  • Clean the filter every two weeks
  • Firstly you should remove the physical debris, this should be done using water pressure either from a hose or a specialised cartridge cleaning tool
  • Pleatco filters are compatible with most proprietary cleaning products or no-foaming degreasers such as dishwasher detergent - They should be left to soak
  • for a minimum of one hour (preferably overnight). We recommend using a Filter cleaning powder like Pure-Spa Powder Filter Cleaner or Pure-Spa Filter Cleaner MAX
  • Before refitting the cartridge, always rinse thoroughly and if possible allow to dry.

Rotation Method

For best results Pleatco recommend using two cartridges in rotation, with one in service in the hot tub and one on standby. This will allow you to leave the out of service filter soaking in detergent for 24 to 48 hours, thoroughly removing any residues from it, and give it ample time to dry out fully before being refitted. Allowing the filter to fully dry will improve its performance upon being refitted.

Will a similar filter fit my Hot Tub

Another filter looks like it will fit my hot tub, will it work?

In many cases a filter which is 5 to 10mm bigger, either in height or diameter will fit into the receiver of your hot tub, and many people choose to do this, either because their own filter is difficult to source or has gone out of production, or because it offers a significant cost saving.

The first consideration is usually the 'top' of the cartridge. If your filter cartridge has a closed top, then you cannot use a cartridge with a hole in it, as water will simply go down the hole and bypass the cartridge. If the top is identical looking and the bottom thread is also identical, then providing the square footage of the cartridge is within ten to fifteen percent of your original (and it fits in your spa) then it is unlikely to have any detrimental affect.

Warning: It is possible to starve pumps of water or cause them to work unnecessarily hard by using filters which are significantly out of specification and this may cause damage to your hot tub.

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