Question about Hayward SAND FILTER, PRO SERIES

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What causes the ring in the multiport valve to rust?

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Please clarify the part. Is this in reference the metal ring under the handle spring? this component is stainless, so if you are seeing some deterioration, this is primarily caused by water imbalance or higher than normal levels of acidic or oxidation products. Check your pH, Hardness and Cyanuric Acid levels. pH should be between 7.2.and 7.8, Hardness should be between 250-500 ppm, CYA should be no more than 80 ppm.

Posted on Sep 10, 2010

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Posted on Jan 02, 2017

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I replaced a spider gasket on my PAC FAB 2# Multiport valve and when I put it back together the sequence is off. Filter mark is actually the waste port and waste is actually the Filter port.... how do you...


There should be a screw hole in the valve lid that has a flat edge on one side (outside edge). The valve body has a matching flat edge that aligns with it.
In the event the handle was removed from the lid and diverter to replace the diverter o-rings it is not uncommon for people to put the handle back on the diverter 180 degrees of where it should be. The pointer on the handle should be aligned above the open port of the diverter. This is true of all multiport valves except the Hayward four way valve.

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I'm hearing air like sounds around the multiport valve. There's bubbles visible in the filter going to the pump. Bled the air on the filter itself and bubbles continues. Could the multi port...


Air only gets into the lines of your equipment if it enters somewhere on the suction side of the system. That means from the pump housing and strainer BACK to the pool on the inlets. Once the water passes from the impeller out the discharge of the pump it is under pressure and any leaks will result in water escaping from the line.

While your filter may or may not need work air is likely the result of failing gaskets or a seal in the pump. Replace the strainer lid ring, the pump body ring and the mechanical seal first. If there is still air look at the valve or valves in front of the pump for controlling inlet water flow...check for leaking stems or failing pipe joints.

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Sand being returned to the pool after vacumming through filter


This could be caused by several things. . After back flushing,did you rinse? Turned pump off, moved selector to rinse, and allowed to run until clear water was observed in the sight glass? If you continue to see the plume of particles, and it never stops, then you probably do have a problem. Your multiport valve gasket could be leaking by. Be sure you keep handle down when moving valve, and the gasket will last longer. You may have a broken, lateral (little fingers at bottom of the filter return piping. This would usually allow sand to flush out of the filter and it would be all the time. The "O" ring where the multiport valve seals to the down pipe could be leaking, letting the dirty incoming water mix with clean outgoing. Have you "cleaned" your filter lately? This is where you add a chemical to flush materials from top of sand pack? You can download a manual with troubleshooting instructions from www.haywardnet.com Enter your exact model number

Nov 06, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

The head of the filter is cracked and leaking


What do you mean by head? The black multiport valve? Where exactly is it leaking? You may be able to fix with new o-ring or seal. Otherwise you'll have to replace the top half or possible the whole valve

Sep 12, 2010 | Hayward SAND FILTER, PRO SERIES

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.

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Sand and murky water being discharged into pool after backwash


You posted this question in Alarm category. but sounds like either your filter laterals, or the backwash valve are bad. I'd need to know what type of filter, and backwash valve you have. is the backwash valve a multiport, or push/pull slide valve, etc... If it's a push/pull valve then the o-rings, or pucks can be bad, or the piston can be broken. if it's a multiport valve, then the spider gasket may need to be replaced. if it's a top mount multiport valve, then it can be broken inside the filter.

Aug 16, 2010 | Pentair Pool & Spa

1 Answer

I have a hayward pump that is about 5 months old and we vaccuumed the bottom of the pool and backwashed it and now it is leakingout the waste/backwash pipe even when it is on filter mode and a little bit...


Do you have a multiport valve or a push pull valve?

Multiport should only be moved in a clockwise direction and never backward. You may want to take off the top and check the seal.

Push pull ... take the valve apart and check the "O" rings.

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1 Answer

After vacuuming and backwashing, the dirt recycles back into the pool PSI is only 8 - what is wrong?


Assure that the o ring is positioned onto the multi-port throat correctly. That could cause dirt to recycle into the pool water.It could also be issues with the multiport valve in the pool filters.

Jul 28, 2010 | Waterway Clear Water 22" Sand Filter...

1 Answer

Leaking after installing a new top mount multiport valve SP0714T


There should be a rubber "O" ring in there. Check for that

Jun 11, 2010 | Hayward SAND FILTER, PRO SERIES

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.

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