All our float switches are designed to fit into drum openings and smaller.  This page is a comparison of the technical specifications of the float switches we use.
miniature Teflon float switch
POLYPROPYLENE 'F' TYPE
PP float switch
POLYPROPYLENE 'P' TYPE
SS float switch
STAINLESS STEEL - TYPE 'S'
BUNA float switch
BUNA FLOAT - 'B'

Polypropylene float switch on a PP stem.  Hollow construction with a ring magnet sealed with plastic.   PP retaining clip. Reversible.

Generally suitable for acids and caustics and many more. See chemical resistance chart for more info.

PP float is our smallest float switch for use in a 3/4″ NPT bung openings. Retaining peg is PP.  Uses two pin-shaped magnets are pin shaped that are sealed with PP.  Not reversible.

Generally suitable for acids and caustics and many more. See chemical resistance chart for more info.

Hollow stainless steel is generally suitable for organic solvents, fuels, oils.  Retaining ring is 15-7 stainless steel.

Generally suitable for organic solvents/oils/fuels. See chemical resistance chart for more info.

BUNA rubber float switch on a 316SS stem.  This is a very hard rubber with no flexibility – more like a resin.  Stainless steel stem and retaining E-clip.

Generally suitable for organic solvents/oils/fuels. See chemical resistance chart for more info.

Temperature rating        200ºF
S.G                                 0.85
Outside Diameter          17.6 mm
Material                          Polypro
Power                            10W
Max. switching current   0.5A
Max. carry current         1.0A
Max. switching V           100VDC

Temperature rating     200ºF
S.G                             0.55
Outside Diameter      16.2 mm
Material                      foamed PP
Power                         50W
Max V                         220VDC

Temp. rating              300ºF
S.G                            0.73
Outside Diameter      22.8 mm
Material                     316SS
Power                        50W
Max. carry current     1A
Max. switching V       265VDC

Temperature rating      200ºF
S.G                              0.55
Outside Diameter.       18.0 mm
Material                       BUNA
Max. current                0.5A

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