Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) crosses A cartridge and grid cleaner

A cartridge and grid cleaner helps remove buildup from compatible filtration components so they can be cleaned more effectively during routine maintenance

and terminal replacement work

If the existing valve is leaking

A skimmer faceplate helps finish and reinforce the opening where the skimmer meets the pool wall

Pentair Max-E-Therm/MasterTemp Hi-Limit Switch, 1/4" NPT (42001-0063S) crosses A cartridge and grid cleanerProtect compatible Max E Therm and MasterTemp heaters from excessive temperature conditions with this 1 4" NPT hi limit switch. The hi limit switch is an important safeguard that helps monitor heat levels and interrupt operation when temperatures move outside the acceptable range. This replacement is commonly used when troubleshooting heater shutdowns, overheating concerns, or failed safety switch readings. It should be installed with attention to