Replacement microswitch for FlowZone diaphragm pumps.
The "Waterproof" microswitch option is ONLY intended to replace defective microswitches on Series 2.5 and 3 sprayers.
The "Regular" microswitch option is intended to replace defective microswitches for Series 1, 2, and 2V sprayers. The Regular microswitch MUST be used for Series 1, 2,
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Microswitch Waterproof
Flowzone Typhoon 3 works great!!! Again once I replaced my old microswitch. I called & spoke with someone told him what was going on with my sprayer. He was right on the money. Thanks Flowzone TEAM
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K.Walter · September 21, 2026
Quick delivery new switch seems more robust
In the past these switches felt cheap and broke easy. This is not my first replacement but this one just felt stronger. Clicking the button with your finger it just seems like they have finally upgraded it to last. I hope so, because this has been the weak link.