Tuffy

Liquid Level Controls

with Electric Switches

D E S C R I P T I O N

devices designed for horizontal mounting in a tank or

vessel through threaded or flanged pipe connections. The

compact size allows for installation in small vessels, while

its many features provide a variety of application uses.

The single switch mechanism is available in SPDT or

DPDT forms on units designed for fixed or adjustable,

narrow or wide differential and interface service levels.

This sales literature covers Tuffy II level switches that

have electric switches. For Tuffy with a pneumatic switch,

see bulletin 44-109.

T E C H N O L O G Y

The Tuffy II achieves switching action through the use of

a magnetic switch mechanism and a magnet attached to

the float assembly. Separating the two magnets is a non-

magnetic pressure barrier.

As the liquid level changes, the float, and therefore the

float magnet, moves. The float and switch magnets repel

each other causing movement of the switch magnet

assembly, tripping the switch and making or breaking an

electrical circuit.

F E A T U R E S

A P P L I C A T I O N S