Pentair Spring Pin (35857-0031) thermometers secure finished cover at the

secure finished cover at the suction point

Use it when replacing a missing thermometer

this Waterway 2-pack diverter plate set is a practical replacement when the original internal flow-control plates need to be renewed

or missing covers

Useful when the original panel is damaged or worn

Pentair Spring Pin (35857-0031) thermometers secure finished cover at theThis Pentair spring pin is a small but important alignment and retention part used in compatible equipment assemblies. It helps hold components in position where a basic screw or loose substitute may not deliver the same fit, tension, or service reliability. For pump, valve, or equipment repairs, using the correct pin helps maintain the intended mechanical relationship between moving or joined parts. Choose this replacement when the original spring