diaphragm switch

[vinces]

Has anybody used one of these switches to protect their sump or wet/dry filter pump from running dry?

http://www.amazon.com/Little-Giant-RS-5-Piggyback-Diaphragm/dp/B0032ALS6U/ref=pd_cp_hi_0_img

 

[KaiserSousay]

http://www.aquahub.com/store/ifloatfloatswitch.html

 

[epond83]

I have not seen that used, but yes people often use float switches to protect thier pumps.