Pneumatic Tuffy® Side Mounted Float Switch

The Pneumatic Tuffy® liquid level switch is a compact pneumatic level switch designed for horizontal mounting in a tank or vessel through threaded or flanged pipe connections.

Operating Principle

Buoyancy force of process liquid on a float causes the float to move with the liquid's surface. Float movement pivots a magnet into the field of a like-charged switch magnet. As the magnets repel each other, the switch magnet moves, actuating the switch.


Sour service (NACE)
Day storage tanks
High/low alarm
Clean liquids
Process vessels
Skids and OEM use


All 316 SS wetted components
Process pressures to 1500 psig (103 bar)
NACE and/or ASME B31.3 construction
Specific gravity as low as 0.40
2 inch NPT mounting
Process temperatures from -40° to +300° F
(-40° to +149° C)


Specific gravity rating
Carbon steel and stainless steel external mounting cages
Variety of thread-on flanges


No Approval found for the product.


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