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    Multiport Valves

    1. 1 year 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. 2 months ago
      Fast Delivery, excellent product
      our top mount was new a couple of years ago, it was always hard to turn. It also was not working correctly so I ordered this one and not only does it work perfectly, it solved our issues. The delivery was fast!
    3. 3 years ago
      Easy to install
      Very easy to install...took about 20 minutes. You might want to buy new hose connectors to screw into the valve when you replace it.
    1. 1 year ago
      Good product quality
      Replaced valve for SP200 sand filter and fit perfectly. For build, only use two wraps of Teflon tape and paste the treads. Hand tighten and 1 1/2 turns more that’s it! Anything more you’re asking to split the housing!
    2. 2 years ago
      wrong item
      not sure where the error occured, ordered a replacement valve for my s210 filter, i wasnt told that my model was duscontinued and the replacement valve wont fit my filter
    3. 4 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.
    1. 3 months ago
      It’s easy
      Purchase a month ago, very easy to install and it works great
    2. 3 months ago
      A+
      We ordered this replacement and it fit and works perfectly! Much easier to replace the whole head valve than trying to pull apart and replace individual gaskets and seals.
    3. 2 years 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.
    1. 2 years ago
      Always great products, fast shipping.
      Multi port valve works great. As good as name brand.
    2. 1 year ago
      Pleased so far
      Order arrived quickly, fits perfectly, and we will see in about a month how it performs.
    1. 2 years ago
      Easy to order and delivered in 2 days works great, solved our problems
    2. 4 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. 3 years ago
      Easy to replace
      Very easy to replace old one. Cheaper than buying the whole filter. Working great.
    • 2019-09-19
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    In The Swim Knowledge Pool: Multiport Valves

    In The Swim's Dr. Pool

    Pool Filter Backwash Valves

    In swimming pool terminology, a multiport valve is a valve used to backwash a sand or DE pool filter. 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, instead of several. 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 fit only certain specific filters, and are not interchangeable among filter models or brands or filter type. Sand filter multiport valves can be either top mounted or side mounted, however DE multiport valves are only side mounted, or attached to the side of the tank. Sand and DE filter side mounted multi valves are not interchangeable, as the in/out pipes are reversed - top-in for sand filters, 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" valves are used on smaller filters, and 2" valves are used with larger filter models, and on pools with 2" PVC plumbing, to provide for higher flow rates. Slide valves, also called push-pull valves, are an alternative side mounted valve for sand or DE filters that offer higher flow rates with less restriction, but only allow two functions, filter or backwash. 

    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 Vari-Flo valve, replace the spider gasket, the key assembly, or the entire valve assembly. 

    Broken 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: Vari-Flo valves often leak from 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 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


    At In The Swim, are proud to present a wide selection of filter multiport valves for Hayward, Jacuzzi, Pentair, Praher and Waterway pool filters. If you need help selecting the correct valve for your filter (it can be confusing), please contact our pool product specialists by email or call on the phone at 1-800-288-7946.