Inground Sand Filters

Common Compatibility Questions

• Compatible with most standard inground pool circulation systems
• Suitable for chlorine and saltwater pool applications
• Most systems utilize 1.5 inch or 2 inch plumbing connections
• Top mount and side mount multiport valve configurations available
• Compatible with single speed and variable speed inground pool pumps
• Designed for long-term durability with corrosion resistant tanks
• Replacement laterals, valves, pressure gauges, and drain assemblies available
• Doheny’s handles warranty support for Doheny-branded sand filters

Frequently Asked Questions

How often should sand filters be backwashed?
Most sand filters should be backwashed when the pressure gauge reads approximately 8-10 PSI higher than the normal clean operating pressure.

How often should pool filter sand be replaced?
Pool filter sand typically lasts approximately 3-5 years depending on pool usage, water chemistry, and maintenance habits.

Can these sand filters be used with saltwater pools?
Yes. These sand filters are compatible with both traditional chlorine and saltwater pool systems when installed and maintained properly.

What type of sand should be used?
Most inground pool sand filters require #20 silica filter sand. Always verify the required media type and sand quantity for your specific filter model.

Are these filters compatible with variable speed pumps?
Yes. Most inground sand filters are compatible with standard single speed and variable speed pool pumps when properly sized for system flow rates.

Who handles warranty claims?
Doheny’s handles warranty support for Doheny-branded systems while Hayward and Pentair branded products may require direct manufacturer warranty assistance.