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The Shurflo Pressure Switch (94-890-02) is a genuine replacement component designed to suit Shurflo 4009 series water pumps. This switch automatically cuts power to the pump when line pressure reaches 45 PSI, preventing over-pressurisation and protecting both the pump and pipework.

Featuring two red wire connections, this pressure switch is commonly replaced when a pump fails to shut off correctly, cycles continuously, or will not start.

Features:

• Genuine Shurflo replacement pressure switch

• Automatically shuts pump off at 45 PSI

• Designed for Shurflo 4009 series pumps

• Two red wire electrical connections

• Restores correct pump pressure control

• Direct replacement component

Specifications:

• Brand: SHURflo

• Product Type: Water pump pressure switch

• Model: 042112

• Original Model: 94-890-02

• Other Identifiers: 800-00170

• Cut-Off Pressure: 45 PSI

• Mounting: Three mounting screws (included)

• Main Body Size: 31 mm x 32.5 mm

• Compatible with: SHURflo 4009 series pumps