How to Replace a Spider Gasket on a Multiport Valve

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How to Replace a Spider Gasket on a Multiport Valve

WRITTEN BY: Inyo Pools

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Follow these steps for spider gasket replacement for pool filter multiport backwash valves. PLEASE NOTE THAT THE VALVE USED IN THIS GUIDE IS FOR ILLUSTRATIVE PURPOSES ONLY. THE DIFFUSER ON THIS VALVE COMES WITH THE SPIDER GASKET PRE-GLUED IN.

Click Here to View Our Spider Gasket EZ Find Chart

Click Here to Find All Multiport Valve Parts (Covers, Diverters, Gasket Kits & More)

Step by Step

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Step 1

Stop pump and release all pressure from system.

Step 2

Place the selector handle at the "winterize" position (this lifts the plug off the seat).

Step 3

Remove the bolts and nuts holding the cover to the valve body. Remove the cover assembly.

Step 4

Remove the old gasket from the valve cover assembly. If the gasket is glued in, you may have to scrape it out with a small screwdriver to get most of it out. Be care that you do not score the plastic groves.

Click Here to View Our Spider Gasket EZ Find Chart

Click Here to Find All Multiport Valve Parts (Covers, Diverters, Gasket Kits & More)

Step 5

Make sure that the gasket groove is free of water, grease, oils, debris and parts of the old gasket. Use NON-acetone finger nail polish remover to remove any gasket residue. Make sure the remover is NON-acetone or it will melt the plastic. Please note that not all multiport valve gaskets are glued in. If the gasket on your valve isn't glued, you would bypass Step #6.

Step 6

NOTICE: Once this step is started, continue through Step 10 without interruption. Using an Adhesive For Valve Seat Gasket apply glue sparingly (a bead about 1/16" wide) to the bottom only (not the sides) of the spider groove in the valve body. The glue lines must be continuous and intersect at the intersections of the grooves.

Step 7

Insert the new gasket into the groove with the rounded bead up. Press the gasket firmly into all groove areas to seat the new gasket evenly.

Click Here to View Our Spider Gasket EZ Find Chart

Step 8

Align the tab on the cover assembly with pin on the valve body, fastening it with the bolts and nuts removed in Step 3. Tighten all bolts evenly.

Step 9

Depress the valve handle and rotate it to the closest standard position (FILTER or RINSE), being careful not to rub the plug on the new gasket. Release the handle, allowing the plug to hold the gasket in place while curing.

Step 10

The minimum cure time is 2 hours. Curing for 24 hours is recommended for full strength.

Click Here to View Our Spider Gasket EZ Find Chart

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(201 to 210 of 210)

InyoPools Product Specialist Dennis R. Posted: 5/20/2012

Phyllis – I assume you are talking about replacing a worn spider gasket. To find your spider gasket, type “spider gasket” in our search box- upper left corner – and hit “Go”. This will show you pictures of the spider gaskets we sell.
Reply

phyllis pazzo Posted: 5/19/2012

I have an older 5 sections, spide valve. Do you know where I can find one or how can I repair my old one? It is up in one setion and looks worn in another.
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InyoPools Product Specialist Dennis R. Posted: 5/9/2012

Sharon,
Check to see if you have any cracks in the plastic walls between the waste chamber and the one ones adjacent to it. Also check for cracks in the handle assembly above the gasket (or under it if you flip the handle assembly over).
Reply

Sharon Posted: 5/8/2012

We replaced the spider gaske and used a permatex black adhsive but we are still getting a leak form the waste port any suggestions?
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InyoPools Product Specialist Dennis R. Posted: 4/30/2012

Tribianni - The only part you need to lubricate on a multiport valve is the o-ring, after you take it off the tank.
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Tribianni Posted: 4/29/2012

Does the multi port valve need to be lubricated ?
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InyoPools Product Specialist Dennis R. Posted: 9/17/2011

We sell a product called Super Weatherstrip Adhesive for valve Seat Gaskets - part# 6550-0
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Anonymous Posted: 9/11/2011

When replacing a spider gasket it mentions useing glue "loctite" 401, 403 and 416 is there another product i could use?
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InyoPools Product Specialist Dennis R. Posted: 8/15/2011

Did this happened after you replaced and glued in the gasket? Could glue have spilled over to the top of the gasket and adhered to the top ot the valve? If you didn't just replace the gasket, the gasket might have torn and blocked the movement of the valve. This often happens if you do not depress the handle fully before rotating it. See if your gasket is still intact.
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goldy Posted: 8/14/2011

I can'tmove the handle on my hayward valve. Its stuck in the filter position. can you help me?
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