how to replace a multiport valve diverter assembly

Poolside Chat Episode #23: Broken Multiport Diverter

This is Poolside Chat where every week we answer your questions on how to fix and maintain your swimming pool. Poolside Chat is presented by, helping pool owners find the right parts since 2001. In today’s episode of Poolside Chat, Rob and Matt tackle another common swimming pool question:
  • Should I replace my multiport valve diverter or the whole key seal assembly?

Now here’s your hosts – Matt and Rob.

 The stem of my multiport diverter broke. Should I get a whole key seal assembly, or just replace the diverter?

-Cali from Rancho Cucamonga, CA

I would typically recommend replacing the whole key and seal assembly. Replacement of the diverter isn’t the easiest thing to do. The process

how to replace a key seal assembly
Hayward SP714T Key Seal Assembly

of changing the diverter is a tough one: first, you must compress the valve handle, so you may tap out the pivot pin. This step is, at least, a two-person job because you will need one person to hold down the multiport valve handle while the other person taps out the pin. The spring is a heavy duty stainless steel that is a real beast to keep compressed. Top give you an idea how tough the spring is, in the  “How to Replace a Multiport Valve Spring” guide, our tech uses his feet to compress the spring while tapping in the handle pin.

But, when you’re replacing the multiport valve’s key and seal assembly, the steps are significantly simpler. The steps consist of removing the 6 to 8 valve head screws pulling out the old assembly, then dropping in the new one. Make sure you align the notch or hitch on the valve body and the new cover, to make sure the diverter is properly aligned over the multiport valve pipes.

Well, thank you for joining us. If you have more questions about multiport valves or anything else pool related, give us a call at 877-372-6038 or email us at

4 thoughts on “Poolside Chat Episode #23: Broken Multiport Diverter

  1. I just love this chat lone up its INYO pools! Thank you for being there for all us new and old pool owners! Great advise.

  2. Husband took upper 6 way valve from bottom part. He is not sure where handle was when he took it apart . Now filter has extreme pressure. How do we know if multiport is reassemble correctly? And why do we have extreme pressure?

    1. The open hole wedge in the diverter should always be opposite the handle. You can see in the picture below, the notch on the handle that selects the setting should always pointing at the empty wedge. So open your valve and confirm its installed correctly.

      sp714t parts valve

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