Multiport Valve Broken Threaded Coupling

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W

Woody007

Well-known member
Aug 20, 2020
223
Midwest US
The coupling cracked in two. It's the lower white one in the picture. I suppose that the curved pipe is part of the valve body and I have to replace the whole thing?
Is there any type repair device that can clamp on to the threads to hold it tight?
Any other repair options?
 

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JamesW said:
Maybe one of these will work.

magicplastics.com

Union Components - Magic Plastics, Inc.

ALL PRODUCTS UNION COMPONENTS All Magic Plastics Union Components are manufactured from quality PVC or ABS. Magic Union Components come bulk packaged and are available in 1½˝, 2˝ and 2½˝ IPS sizes. Part Number Size & Detail description Pkg Qty 0120103015 1½” FBT Union Nut 135...
magicplastics.com magicplastics.com

View attachment 443721
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I ordered a couple of these the other day when I saw your first post. I'm not sure if it's any larger than the ones in the store. I tried to measure the nut, but it's hard to get to since I put it all back together so I can at least get circulation. It looks to be close to 4" OD. Maybe a little less.
The valve is a Praher SM20-2 going into a Jandy DE filter. I was ready to just get a new valve, but the equivalent they had in the store didn't line up with the bulkhead fittings. Do you know where I can get a new Praher valve?
Thank you for all your help.
 
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JamesW said:
View attachment 444074

Click to expand...
You have to be one of the most helpful folks in this group. Thank you again!!
Looks like I've been looking in the wrong place for this valve and using the manufacturer instead of the brand.
This one looks to be it. The nut is 3.25 and span from bulkhead is 8, which seems to match mine.

Jandy Zodiac Side Mount Multiport Valve for DEV48, DEV60, JS60-SM, and JS100-SM Filter - 4581-035 - INYOPools.com

SIDE MOUNT MULTIPORT VALVE FOR DEV48 & DEV60 (BWVL-MPV) - Pool & Spa Parts
www.inyopools.com www.inyopools.com
 
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Woody007 said:
You have to be one of the most helpful folks in this group. Thank you again!!
Looks like I've been looking in the wrong place for this valve and using the manufacturer instead of the brand.
This one looks to be it. The nut is 3.25 and span from bulkhead is 8, which seems to match mine.

Jandy Zodiac Side Mount Multiport Valve for DEV48, DEV60, JS60-SM, and JS100-SM Filter - 4581-035 - INYOPools.com

SIDE MOUNT MULTIPORT VALVE FOR DEV48 & DEV60 (BWVL-MPV) - Pool & Spa Parts
www.inyopools.com www.inyopools.com
Click to expand...
This morning, the pump had lost prime. Yesterday when I first put the valve in, it was dripping out the waste port. I exercised it a few times and seemed to be ok. Any thoughts on this? No water leaks, so I have to assume it's leak back through the valve.
 
You can plug the port.

Maybe the stem O-rings need lubrication?

Get some spray silicone and squirt it in the recess where the stem is.

1660316583953.png

Below is the diffuser.

It is the part that lifts and rotates as you change positions.

If the stem O-rings are not fully lubricated, the diffuser won’t fully reseat against the bottom spider gasket and make a perfect seal.

You can disassemble the valve and lubricate the O-rings, but I would try squirting some spray silicone into the recess and letting it soak in.

1660316724615.png
 
JamesW said:
You can plug the port.

Maybe the stem O-rings need lubrication?

Get some spray silicone and squirt it in the recess where the stem is.

View attachment 445677

Below is the diffuser.

It is the part that lifts and rotates as you change positions.

If the stem O-rings are not fully lubricated, the diffuser won’t fully reseat against the bottom spider gasket and make a perfect seal.

You can disassemble the valve and lubricate the O-rings, but I would try squirting some spray silicone into the recess and letting it soak in.

View attachment 445678
Click to expand...
I put a plug in for a few hours, and when removed it had some pressure buildup and about a pint of water came out.
I can put some lube on it, but I may wait a bit. It was just installed yesterday and should be under warrantee.
 
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Woody007 said:
I put a plug in for a few hours, and when removed it had some pressure buildup and about a pint of water came out.
I can put some lube on it, but I may wait a bit. It was just installed yesterday and should be under warrantee.
Click to expand...
The company's going to send me a replacement. I have a plug in for now.
Is there any controlled way to drain the DE tank?
Oh, and thanks one more time for your help!!
 
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