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.
STANDARD POLYPROPYLENE
Polypropylene float switch on a polypropylene stem. Hollow construction with a ring magnet sealed with plastic. polypropylene retaining clip. Reversible.
Generally suitable for acids and caustics and many more. See chemical resistance chart for more info.
How to reverse the float switch.
Temp. rating……… 200ºF
S.G.…………………0.85
Outside Dia.………17.6 mm
Material…………… Polypro
Power………………10W
Max. current……… 0.5A
Max. voltage………100VDC
Mount………………M8
Designation…………F
ULTRA NARROW POLYPROPYLENE
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.
Temp. rating………200ºF
S.G…………………0.55
Outside Dia.………16.2 mm
Material………… foamed PP
Power………………50W
Mount……………… ⅛”NPT
Designation…………P
KYNAR
Kynar is for the most aggressive chemicals when nothing else works. Reversible.
Consult chemical resistance chart here.
Temp. rating………200ºF
S.G…………………0.80
Outside Dia.………21.2 mm
Material………………Kynar
Max. current…………50VA
Mount…………………⅛”NPT
Designation……………K
BUNA
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.
This is our standard float switch for Intrinsically Safe alarms.
Temp. rating……… 300ºF
S.G.…………………0.73
Outside Dia. ………22.8 mm
Material…………… 316SS
Power………………50W
Max. carry current …1A
Max. switching V… 265VDC
Mount……………… M10
Designation…………S
BUNA
Generally good for fuels, aliphatic hydrocarbons, many halogenated chemicals but its hard to come up with rules of thumb. Check the chemical resistance charts before ordering.
Reversible. Very low S.G.
Temp. rating………230ºF
S.G…………………0.51
Outside Diameter…17.8 mm
Height………………25mm
Material……………BUNA
Max. current……… 50VA
Mount………………⅛”NPT
Designation…………B
ULTRA LIGHT STAINLESS
The Ultralight stainless float is for applications where the standard narrow stainless float S.G. of 0.73 is too high. This float has a S.g. of only 0.50.
Temp. rating………300ºF
S.G…………………0.50
Outside Dia.………38 mm
Material………………316 STAINLESS STEEL
Max. current…………50VA
Mount…………………⅛”NPT
Designation……………U