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    Multiport Valves

    1. 4 months ago
      Easy to install.
      We desperately needed this and glad we didn't put it off any longer. So easy to install and so nice to have one that functions correctly with no hassle. My other one was 15 yrs old and would barely shut off anymore. Nice price, fast shipment and easy to install.
    2. 3 months ago
      Multi port
      We are quite pleased with the replacement part that in the swim sent to us. It corrected the problem that we had. We have used in the swim for several years and have been pleased with every purchase that we have made
    3. 3 years ago
      Good quality...good price...free shipping...received in in 36 hours...Win!
    1. 2 years ago
      All good
      My pool guy recommended this and installed without a hitch.
    2. 1 year ago
      In The Swim saved the day!
      Ordered a Hayward Mpv Valve Assembly from In The Swim. The part arrived quickly, the install was easy, and we were back in business in no time! Thanks In the Swim for another "Home Run!!!?
    3. 6 months ago
      Exact replacement and fit
      Replace my old cracked and leaking six-way valve with this, and it's an exact Perfect Fit replacement. God bless Trump
    1. 3 years ago
      There when you need them.
      I bought a replacement part for my Hayward Filter from in the swim when I was told by my local dealer I would have to buy a new a whole new filter.
    2. 2 years ago
      Works well
      I bought this valve a few weeks ago hooked it up and it's working well. I am really happy with it.
    3. 2 years ago
      Perfect replacement
      This part fit easily without any effort. It did not leak and switched between functions firmly.
    1. 6 months ago
      Pleased so far
      Order arrived quickly, fits perfectly, and we will see in about a month how it performs.
    2. 1 year ago
      Always great products, fast shipping.
      Multi port valve works great. As good as name brand.
    1. 1 year ago
      Easy to order and delivered in 2 days works great, solved our problems
    2. 3 years ago
      great part
      Bought this and the laterals or insides to my Hayward filter. They are working as expected. Outstanding. But warning. Do not buy the zeo sand. Just royally messed up my system and water clarity.
    3. 1 year ago
      Hayward Replacement parts
      Found the part, shipped quickly, not a bad price with the 10% discount. Only problem was the charge a$10 handling fee which negated the discount.
    1. 2 years ago
      Easy install, works smooth
      I bought this after my original 10 yr old one wore out the gasket. A replacement gasket was $35. A new entire multi valve head was $90. Figured it was for the best. I don't regret it one bit. Worth the peace of mind
    2. 1 year ago
      Great deal
      My old valve was leaking, I was searching for this calva and I thought it was going to be very expensive, and I found this great deal.
    3. 3 years ago
      Quick delivery
      Very competitve price but even better, ordered on a Thursday and received on next day (Friday) which is great because I thought I would have to go the weekend without my filter running.
    • 2018-10-16
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    In The Swim Knowledge Pool: Multiport Valves

    In The Swim's Dr. Pool

    Pool Filter Multiport Valves

    In swimming pool terminology, a multiport valve is a valve used to backwash sand or DE pool filters. A multi-port valve has many internal ports (hence the name), and enables the pool owner to backwash the filter with the turn of a single valve handle. Other commonly used functions include rinse to flush out any residual dirt after backwashing, and drain to waste, for vacuuming to waste or lowering the water level without backwashing. Recirculate is used when the filter is in need of repair - if you can't filter the water, at least you can circulate it. 


    Multiport valves are specific to certain filters, and are not interchangeable among filter models or brands. Sand filter multiport valves are either top mounted or side mounted, and DE multiport valves are only available in side mount versions. Sand and DE filter multi valves are not interchangeable, as the in/out pipes are reversed - top-in for sand, and bottom-in for DE filters. 

    Multiport valves are also available in 1.5" and 2" models which refers to the size of the pipe connections. 1.5" multiport valves are used on smaller filters, and 2" multiport valves are used with larger filter models, and on pools with 2" PVC plumbing, to provide for higher flow rates. 

    Multiport Valve Troubleshooting

    Leaking out the Waste Port: A common problem with pool multi valves is that water may begin to leak out of the waste port, or can allow water to return to the pool unfiltered. To repair a leaky multiport valve, replace the spider gasket, the key assembly, or the entire valve assembly. 

    Broken Multiport Valve Handle: Valve handles can be replaced by tapping out the handle pin to remove the old handle. To install a new MPV handle, remove the key assembly from the valve body, and have a helper push down on the lid to compress the valve spring, while you tap the pin through the handle and stem. 

    Leaking around the Valve Handle: This leak is caused by failure of the pair of stem o-rings located just underneath the handle, causing water to ooze around the handle and spill over the edge. Replace the o-rings, or replace the entire key assembly, or the entire valve assembly. 

    Leaks around the Pipe Ports: Cracks from over-tightening pipe fittings into the valve, or using too much Teflon tape. Cracks can also be caused by rotating the valve while the pump is running or other water hammer effects. Replace the valve body, or the entire valve assembly.

    Leaks where Valve Connects to Filter: Top mounted multi valves have flange gaskets and side mounted multi valves have union o-rings to seal the valve to the filter tank. Loose bulkhead nuts or flange clamps, or failing o-rings or gaskets can be the cause. 

    Multiport Valve Selection Chart

    Multiport Valve Selection Chart