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WC12 147Starite multiport valve on my Pantera sand filter seems to have lost pressure as if it is not directing water through the sand. The pressure is zero and new pump is rattling as if no load until I turn on the solar heating then pressure moves up a bit.The pressure did go up to 130kpa after using algacide then when I back washed it went to zero.I dismantled and applied vaseline to seals but no change.

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  • Pool & Spa Master
  • 5,056 Answers

Try recirculate if ok then replace sand

Posted on Sep 13, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 19 Answers

SOURCE: my pool sand filter pump isnt filtering the water

could possbly be a bad gasket on the vari-flow valve. When is the last time you backwashed?

Posted on Apr 29, 2009

SOURCE: Hayward sand filter needs primed every time

The problem is a malfunctioning check valve. It'll be somewhere in the line on the pump output side. If it's not a separate fitting it'll be in the line, probably in an elbow.

Need further info, let me know...

Charlie

Posted on May 29, 2009

smartr10U
  • 1305 Answers

SOURCE: Help low pressure in pool pump and filter

I can relate so well to your problem. My pool is surrounded by pines and deodora trees... all the needles seem to find their way through the baskets, strainers and into the inlet of the pump. It became a daily routine of having to reach into the inlet and clean the debris if I wanted a filtered pool.
Here' s a solution that will work!
Purchase an extra debris scoop ...the kind you put on the pole and scoop debris from the bottom of the pool.
Cut the net out of the frame and wrap the netting around the skimmer's debris basket and secure it with an oversized rubber band or zip ties, then replace the basket back in the skimmer.
Your skimmer will keep the debris out of the pump!
This will make a world of difference in your pump's pressure!
Give it a try and see if you're not working better!

Posted on Jun 03, 2010

Testimonial: "Thank you very much I will give it a try. I know this will stop the debris for sure. Again thanks"

miket756
  • 2702 Answers

SOURCE: We have a hayward sand filter for our 24ft round

its more likley to be too much sand in it and its just cloged up,,,take the sand out and run the pump out of the pool in a big tub of water to flush it out and also to back flush it,,,if its working ok after that fill it up with the right type of sand but only a little at a time,,,,
i dont think the phosphates are a problem its not being filterd thats the problem this needs sorting out fast or the pool will fill up with algy and green slim

Posted on Jun 20, 2010

  • 990 Answers

SOURCE: My Hayward Swimpro Sand filter is not backwashing

Be sure it is not plumbed backwards and be sure you got a sand valve as a DE plumbs the other way.

Posted on Jun 26, 2010

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1 Answer

Hayward pro series 220 not working. On filter mode continuously and pressure never goes up. Return pressure stays strong. water stays cloudy. I have changed sand, down pipe and now the multiport. Basi


This is not an uncommon situation for sand filters(persistent or slow to clear cloudiness). Mostly, these days , pumps are oversized for filter flow rates resulting in water being ramrodded through sand bed. The first thing to do is balance the water. If chlorine not present, double the suggested dosage. We are also assuming that the m.port valve has not been disassembled. the best sand to use is a #20 or #2 white quartzite. If problems persist , then consider filter aiding media to help the sand bed trap finer particles.

Oct 01, 2014 | Pool & Spa

Tip

Backwashing A Sand Filter with A Push/Pull Slide Valve or Multiport Valve


Lots of people are first time pool owners and pool professionals forget to teach these "newbies" about the simplest aspects of pool ownership.

One of the biggest questions we receive from new homeowners is "How do I go about backwashing my sand filter exactly?"

It doesn't matter if you have a Hayward, Pentair, Jandy, Sta-Rite or any other number of Sand Filters on the market they all utilize the same basic valves for backwashing; a push/pull slide valve or a multiport valve.


To backwash with a multiport valve:
1) Shut off pump motor.
2) Press down on valve handle, rotate valve from FILTER to BACKWASH position.
3) Roll out any backwash hose or open any waste line valves.
4) Open air bleeder assembly on filter, and turn pump on.
5) Watch pressure gauge for backpressure and hose for kinks. Be prepared to shut off pump quickly.
6) After hose fills with water, run for 3 - 5 minutes or until water runs clear.
7) Shut off pump motor and move multiport valve handle to RINSE position. Run on rinse for 15 - 25 seconds.
8) Shut off pump motor and move multiport valve handle to FILTER position.
9) Turn pump back on and note lower pressure.
10) Roll up backwash hose so the dogs use it as a chew toy.


To Backwash a sand filter with a slide valve:
1) Shut off pump motor, roll out backwash hose.
2) Twist to unlock plunger T-handle, push or pull(depending on manufaturer) the plunger 2" - 3".
3) Open air bleeder assembly on filter, and turn pump on.
4) Watch pressure gauge for backpressure and hose for kinks. Be prepared to shut off pump quickly.
5) After hose fills with water, run for 3 - 5 minutes or until water runs clear.
6) Shut off pump motor and push T-handle back down into locked position.
7) Turn pump back on and note lower pressure.
8) Roll up backwash hose.

Now you are a backwash Guru!

More tips and tricks are available form The Ugly Pool Guy, www.WeFixUglyPools.com

on Dec 14, 2010 | Pool & Spa

1 Answer

How to get the right pressure to backwash and rinse


you dont need a lot of pressure to backwash just make sure water is clean coming out then rinse for 30 sec then put back on filter do not turn valve while filter is running you will ruin multiport gasket

Jul 18, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

Pantera pool filter model p24


give them model number of filter and multiport you need new multiport gasket (spider gasket)

Feb 09, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

How do I get into the filter to check backwash valve?


you shouldnt have to go inside the filter that is done in the multiport
turn system off turn multiport to backwash till water comes out clean shut off then turn lever to rinse for about 30 seconds turn off pump again turn lever to filter you should see more water pressure coming out of pool return

Sep 10, 2013 | Hayward Pro Series 18" Above Ground Pool...

1 Answer

How to know what cycle to use or when to use filter, backwash or rinse?


during normal operation, your multiport valve should be in the "FILTER" position.

Once the pressure in the filter reaches 10psi more than what it was when the filter was clean, you should backwash. turn the pump off, press down and turn the multiport valve to backwash. turn the pump on and watch the effluent water until it goes from dirty to clean. Then place the multiport valve to the rinse position, this will rinse any remaining dirt from the top of the filter and valves so that it does not return to the pool. Once the water comes out clean, return the valve to the filter position.

Do not turn the valve while the pump is on, always make sure to turn the pump off before servicing any equipment.

Aug 01, 2011 | Intex 2100 Gph 95 Hp Sand Filter Pump With...

1 Answer

When turning pump on sand shoots into pool app. two seconds.replaced diverter and lateral coponents. still does the same thing. twm 19 inch p/n 520-1910


If you don't have a manual you can download one here:
http://www.waterwayplastics.com/manuals/810-0092H.0209.pdf
Are you sure you didn't damage laterals when adding sand. Best to have 1/4 water in filter as you add sand. Be sure o ring is in place in multiport valve that fits on downtube.Be sure down pipe is not too low to enter multiport valve. The pipe should fit snugly into the multiport valve o ring. Be sure you have correct sand (pool filter sand only) IF all this is ok, try backwashing till glass is clear. Run on rinse position for a few min. THen go back to filter and see if it still pumps in sand.

Aug 16, 2010 | Waterway Twm Above Ground Pool Pump and...

1 Answer

Wicor high rate sand filter P20. When I have it on "filter" there seems to be some water starting to leak from "backwash" hose.I only let it run maybe 30 seconds. Not looking for it to blow out any seals...


If it has a multiport valve, most likely the spider gasket inside has damage or has come out of place. A broken stem spring can also cause water to bypass out the backwash due to not having enough force to seat the seal. Take the multiport apart and check the spider gasket and spring.

Aug 15, 2010 | Hayward SAND FILTER, PRO SERIES

2 Answers

Pentair Quad DE system was installed without multiport valve


This is a DE (Diatomaceous earth) IT doesn't have sand and doesn't backwash. You use the bump handle (with pump off and valves closed and vent open and drain dirty water/earth out) Here is a link to the manual for your filter If isn't the exact model they are all on their web site: http://www.haywardnet.com/products/Manuals/pdfs/manual9.pdf

Jul 20, 2010 | Hayward EC-40 DE Pool Filter with pump

1 Answer

My filter and pump will not retain the prime after turning off. Its a pantera sand filter. I can hear an air hissing sound coming from the multi valve port


Either you have a bad spider gasket inside the multiport valve or a bad threaded fitting going into it. Check for leaks around the multiport and backwash line. You'll have to take apart the multiport valve to make sure the spider gasket is not damaged or out of place. Make sure to install the multiport valve in the same position. You can get a replacement gasket at most pool supply stores or online.

Oct 29, 2009 | Hayward Pool Products HAYWARD HEAT PUMP...

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