Pentair Low Pressure Switch 90/120 (473175) duraplastic Water sensors help the heater

Water sensors help the heater monitor operating conditions and communicate important information to the control system during normal use

Replacing the assembly as a unit can make the rebuild feel more complete and help preserve proper internal geometry inside the filter

Check connection sizes and style before purchase

Sand filter parts should be matched to the tank and valve configuration so flow distribution

Pentair Low Pressure Switch 90/120 (473175) duraplastic Water sensors help the heaterFor equipment that is mostly sound, the right replacement component helps bring performance back without overbuilding the repair. This item is a low pressure switch for 90 120 heater applications and compatible Pentair equipment service. Use it when the original part is worn, damaged, missing, or no longer helping the system perform as intended. This electrical switch component supports compatible control or safety circuits and should be matched