FNS Plus 48 Sq Ft Filter w/o Valve - 180008



Part # 180008

By Pentair Pool Products

  4.5 Average  



Part # 180008

Warranty 3 year tank

Product Description

Pentair FNS Plus filters are fiberglass reinforced polypropylene of advanced chemical resistant materials for superior strength and reliability. The top manifold design features the Service-Ease grid pack for convenient one-at-a-time grid servicing. Pentiar Backwash valves are sold separately.

  • Superior strength
  • Service-Ease grid pack
  • Continuous High Flow internal air relief*
  • 100% factory tested
  • Top-to-bottom backwash
  • High Flow manual air relief valve
  • Tension Control clamp
  • Black valves and plumbing
  • 1 1/2 in. bottom clean out port
  • 7 1/2 in. centerline bulkhead fittings
  • Warranty 3 Yrs. Shell, 1 Yrs. Parts

Click here for more Pentair Filter

Product Specifications

Multiport Valve:
Filtration Area:
48 sq. ft.
Flow Rating:
96 GPM
Turnover 8 Hrs.:
46080 gal.
Turnover 10 Hrs.:
57600 gal.
Turnover 12 Hrs.:
69120 gal.
DE Required:
4.8 lbs.

?     Asked on 2/27/2017 by

Do you offer this with filter in 1-1/2" plumbing? Id rather not have to use a reducer if its 2"

A     Answered on 2/27/2017 by Andy O.

Hello- This filter would require a multiport valve to be installed with it. You can use the 1.5" Threaded Multiport Valve for D.E Filters - 261177 instead of using the 2" valve.

?     Asked on 1/13/2017 by Tom

Should I use a 36 Square ft triton FNS or a 48 square ft pool is approx. 200000 gallon with one HP Pump

A     Answered on 1/16/2017 by Adam Y.

Good morning Tom, I would go with the FNS Plus 48 Sq Ft Filter w/o Valve - 180008

?     Asked on 9/3/2016 by

I found the filter but can the shell be bought separately?

A     Answered on 9/8/2016 by Scott W.

The top and bottom tank are sold separately. Part numbers 4600-0017 and 4600-0021.

?     Asked on 7/19/2015 by PG

I have a Pentair Filter Part # 180008 on the bottom of the tank is a plug that started to leak water i went to check it and it fell off what can I doe to fix this

A     Answered on 7/19/2015 by Dennis R.

PG - I think you are referring to the drain plug at the botton of the tank. This plug should screw back in. If the plug's threads are stripped, here is a link the filter's parts list :Drain Plug (#24) and associated O-ring (#23). If the threads in the tank are stripped, you will have to buy a new tank bottom (#25) or a new filter.

?     Asked on 6/23/2015 by bob feeney

I have a 30 year old sylvan pool with 48 KDI de stainless filter and 6 way multiport americana valve. Please advise on filter and valve selection.

A     Answered on 6/24/2015 by Lennox H.

Hi Bob, You can go with the Pentair FNS Plus 48 Sq Ft Filter w/o Valve and you can use the 1.5" Threaded Multiport Valve for D.E Filters or the 2" Multiport Valve Threaded for D.E depending on your size plumbing.

?     Asked on 7/23/2012 by Guest

I have a 27 year old 20x40x4 pool with a 1.5 hp Hayward Super Pump and an Lomart DE Filter that developed a slow leak I can't stop. Replacement parts no longer available. There are 30 ft of 1.5 inch tubing from the skimmer to the pump and 20 ft of 1.5 in return line. Pump is at pool water level. The old Lomart has 9 D.E. disk filters with a total surface area of 25 Sq. Ft. I am looking for an over sized D.E. filter replacement. Is the Pentair 180008 one of the better replacements? Can you sugge

A     Answered on 7/23/2012 by Patrick P.

Yes this Pentair filter would be a great replacement and considerable upgrade from you Lomart filter. If you go with this Pentair filter then you would also need to purchase the Pentair 1.5" mulitport valve. Thanks for the great question.


Review Summary

  (Average 4.5 out of 5 stars)
4 Rating
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The Most Recent Reviews

 (4 out of 5 stars)  

from Millbury, OH ()

nice filter matched up to existing very well

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0     1

 (4 out of 5 stars)  

from Yuma, AZ ()

Pros: it works MUCH better than my sand filter did!

Filter instructions were vague on the startup proceedure I thought. Nowhere in them did it say that every time the pool is backwashed more DE must be installed. I didn't wnow and asked a friend whythe backwash water was white.

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0     2

 (5 out of 5 stars)  great flow rate

from chardon, ohio ()

the item arrived in a very timely manner. the flow rate was much faster than my sand filter. the product was easy to install. one problem was the gauge on top came cracked although it was still usable. i believe the system crushed it in the box.

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