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FAQ: How do I make sure the switch I choose has the correct specific gravity?

How do I make sure the switch I choose has the correct specific gravity?

One of the main considerations when choosing a switch is the specific gravity of the float. To make sure the float will function properly in the application, the specific gravity of the fluid must be greater than the float's specific gravity at the maximum temperature range of the application. For reference, below are specific gravities of some of our floats.

Full-Size Floats Miniature Floats Side-Mounted Floats
Stainless steel — 0.55 SG, & 0.70 SG Stainless steel — 0.70 SG M5900 — 0.60 SG
Polypropylene — 0.75 SG Polypropylene — 0.80 SG Polypropylene — 0.60 SG
Buna-N — 0.45 SG Buna-N — 0.45 SG PBT — 0.75 SG
Kynar — 0.75 SG Kynar — 0.85 SG Kynar — 0.75 SG