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  4. Sta-Rite Posi-Flo II Cartridge- PTM 50, 70, 100
  5. NFC2570
  6. Q & As

?     Asked on 3/22/2017by Frank Sales

Just to be sure ------------- I have a Sta-Rite PTM 135 that calls for a Posi*Flo ii filter, part # WC108-7052X. Is your NFC2570 the correct replacement? Thank you.
 Reply

A  Answered on 3/22/2017 by InyoPools Product Specialist Hector F.

Yes that is the correct cartridge for your filter.
 Reply


?     Asked on 7/6/2017by David

will cartridge NFC-2570 replace cartridge wc108-70s2x
 Reply

A  Answered on 7/9/2017 by InyoPools Product Specialist Lennox H.

Hi, David. Yes, this Sta-Rite PTM 135 Generic Cartridge - NFC2570 is an aftermarket replacement for the WC108-70S2X.
 Reply


?     Asked on 7/12/2017by Inyo Visitor

you gave me this filter part no. if it does not fit is it returnable
 Reply

A  Answered on 7/13/2017 by InyoPools Product Specialist Patrick P.

Yes, it may be returned just as long as water has not passed through it.
 Reply


?     Asked on 4/9/2018by Don Brincka

I have a "Posi Flo" filter that specifies a "135 TXR" replacement cartridge. Does this filter qualify as a replacement?
 Reply

A  Answered on 4/10/2018 by InyoPools Product Specialist Lennox H.

Hi, Don. It will not, the Filter, Cartridge 135 Sqft Generic - NFC2560 will. 
 Reply


?     Asked on 7/14/2019by Bob

My present filter’s size is 8 1/2” x 31” x 4” center. My filter casing is a Teel. 135 sq ft & 150 psi. Which filter is the correct number?
 Reply

A  Answered on 7/14/2019 by InyoPools Product Specialist Lennox H.

Hi, Bob. This cartridge is close in dimensions but not exact, so it will NOT fit. We do not have a cartridge that matches your exact measurements, please provide the filter model so that we can locate the replacement. 
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?     Asked on 9/12/2022by Sue Lawrence

I have a sta-rite cartridge filter. the replacement cartridge is WC108-53SIX. Also on the metal plate attached to to filter cover has eff. filter area 137 sq ft. I am not sure which replacement filter would be the correct one.
 Reply

A  Answered on 9/12/2022 by InyoPools Product Specialist Craig C.

Hello Sue.  The Sta-Rite PTM 135 Generic Cartridge - NFC2570 is a compatible replacement filter element for the Pentair/Sta-Rite Posi-Flo II Cartridge Filter Model PTM135.   The NFC2570 filter element has 137 sq ft of filter area.  Attached please find the Sta-Rite Posi-Flo II Cartridge - Model PTM 135 exploded parts diagram for reference.  
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