Filter Multiports, Rotors & Gaskets

Your sand filter multiport directs the flow of water in your sand filter. Due the to water pressure, the chemicals in the water, and just basic wear and tear, your sand filter multiport may need part replacements every 4-6 years and a total port replacement if you have two or three parts failing within a few months within each other. 

Sand Filter Multiport Troubleshooting 

Here are some signs and symptoms to look out for that may indicate that your pool sand filter multiport needs repair:

• Leaking in and around the valve itself
• Leaky Pressure Gauge or constant low/high pressure even after backwashing
• Cracked multiport lever or cracks on the multiport body itself
• Waste line discharging water even if the multiport valve is not set to “waste” 
• “Loose” feeling or your multiport doesn’t feel “solid” anymore

For more information on sand filter multiport troubleshooting, you can check out the full guide here. 

Multiports for older models can cost up to 70% to 80% of the cost of a new sand filter model so make sure to keep them in tip-top shape by changing out any part that needs replacing as soon as possible. 

If you have an older pool sand filter, you may also consider replacing the entire unit with a newer, sturdier model. Check out our line of pool sand filters here.

Sand Filter Rotors

The sand pool filter rotor of your multiport valve moves to divert water flow to the required setting. One of the common problems with pool filter rotors, when they fail to provide adequate pressure to seal the individual chambers, is a failed (or lost) spring.

Before replacing your pool filter rotor, check if the spring is still intact to save up on unnecessary expenses. If the spring is damaged or lost, you can easily get a replacement spring from Mr Pool Man’s online catalogue

Another reason for rotor failure is a cracked or damaged pool spider gasket. If that is the case then you can shop for genuine spider gasket replacements here.

The only time when you have to replace a pool filter rotor is when they have excessive wear and tear, or are physically damaged.  Don’t worry, it only takes a few minutes to replace a busted pool filter rotor and it requires only basic tools like a screwdriver to take apart. 

For more information on troubleshooting your pool sand filter’s multiport, check out our multiport valve troubleshooting guide here. 

Sand Filter Spider Gaskets

Depending on your sand filter multiport model, your pool filter spider gasket will either have 4 or 5 spokes laid out in a wheel pattern. The main function of the pool filter spider gasket is to ensure that the water is channeled to the correct port when needed.

A worn or torn spider gasket can be the difference between a fully working sand filter and one that just wastes water. Spider gaskets need to be replaced around every five years or whenever you notice unusual leaks coming from your sand filter multiport valve.

For more information on how to diagnose spider gasket damage and some information on how to replace them, check out our pool sand filter multiport troubleshooting guide here.