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About Float Switches
More
Vertical-Mount Float Switches for Fuels and Oils
Mount these switches from outside the tank through a threaded connection. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float. Choose the switch with a stainless steel float for durability in harsh conditions.
Switches with splash guard minimize false switch activation caused by splashing liquid.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Mounting Location | Float Ht. | Overall Dia. | Electrical Connection | Each | |
120V AC/240V AC Input Voltage | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Buna-N Rubber Float | |||||||||||||||
| 1/8 | NPT | Male | 0.45 | 150 psi @ 70° F | 35° to 250° | 1 9/16" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.17 A @ 120 V AC | Top, Bottom | 1" | 1" | Wire Leads | 00000000 | 000000 |
| 1/8 | NPT | Male | 0.55 | 150 psi @ 70° F | 35° to 145° | 1 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Top, Bottom | 1" | 1" | Wire Leads | 00000000 | 00000 |
| 1/4 | NPT | Male | 0.55 | 150 psi @ 70° F | 35° to 145° | 2 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.5 A @ 120 V AC | Top, Bottom | 2" | 1 1/4" | Wire Leads | 00000000 | 00000 |
Buna-N Rubber Float with Splash Guard | |||||||||||||||
| 1/8 | NPT | Male | 0.55 | 150 psi @ 70° F | 35° to 145° | 1 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Top, Bottom | 1" | 1 1/2" | Wire Leads | 00000000 | 00000 |
| 1/4 | NPT | Male | 0.55 | 150 psi @ 70° F | 35° to 145° | 2 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.5 A @ 120 V AC | Top, Bottom | 2" | 2" | Wire Leads | 00000000 | 00000 |
316 Stainless Steel Float | |||||||||||||||
| 1/8 | NPT | Male | 0.7 | 300 psi @ 70° F | 35° to 300° | 2 1/16" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.5 A @ 120 V AC | Top, Bottom | 1 3/16" | 1 1/8" | Wire Leads | 0000000 | 00000 |
Dual-Level Vertical-Mount Float
Switches for Fuels and Oils
Empty and fill your tank with a single device—these dual-level switches include two float switches that actuate at different levels. The stem can be cut to length. Mount through a threaded connection at the top of your tank.
Overall | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Float Ht. | Ht. | Dia. | Electrical Connection | Each | |
120V AC/240V AC Input Voltage | |||||||||||||||
Buna-N Rubber Float | |||||||||||||||
| 2 | NPT | Male | 0.55 | 150 psi @ 70° F | 35° to 180° | 33 1/2" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.17 A @ 120 V AC | 1 11/16" | 35" | 1 7/8" | Wire Leads | 0000000 | 0000000 |
316 Stainless Steel Float | |||||||||||||||
| 2 | NPT | Male | 0.75 | 750 psi @ 70° F | 35° to 275° | 34" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.17 A @ 120 V AC | 2" | 35 1/2" | 2 1/16" | Wire Leads | 0000000 | 00000000 |
Vertical-Mount Float Switches
with Bracket for Fuels and Oils
Use the included bracket to mount these switches to the inside of your tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float.
For technical drawings and 3-D models, click on a part number.
Mounting | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Mounting Location | Float Ht. | Overall Dia. | Electrical Connection | Fasteners Included | No. of Holes | Hole Dia. | Each | |
120V AC/240V AC Input Voltage | |||||||||||||||
Buna-N Rubber Float | |||||||||||||||
| 0.55 | 150 psi @ 70° F | 35° to 140° | 3 3/16" | 1 Off (Normally Open) | SPST-NO | 0.17 A @ 120 V AC | Top, Bottom | 1 9/16" | 2 5/8" | Wire Leads | No | 2 | 9/32" | 0000000 | 0000000 |
| 0.55 | 150 psi @ 70° F | 35° to 140° | 3 3/16" | 1 Off (Normally Open) | SPST-NO | 0.4 A @ 120 V AC | Top, Bottom | 1 9/16" | 2 5/8" | Wire Leads | No | 2 | 9/32" | 0000000 | 000000 |
| 0.55 | 150 psi @ 70° F | 35° to 140° | 3 3/16" | 1 On (Normally Closed) | SPST-NC | 0.17 A @ 120 V AC | Top, Bottom | 1 9/16" | 2 5/8" | Wire Leads | No | 2 | 9/32" | 0000000 | 000000 |
| 0.55 | 150 psi @ 70° F | 35° to 140° | 3 3/16" | 1 On (Normally Closed) | SPST-NC | 0.4 A @ 120 V AC | Top, Bottom | 1 9/16" | 2 5/8" | Wire Leads | No | 2 | 9/32" | 0000000 | 000000 |
Horizontal-Mount Float Switches for Fuels and Oils
Install these switches into a threaded connection in your tank wall from outside the tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float. Choose switches with a metal body for durability in harsh conditions.
Switch with splash guard minimizes false switch activation caused by splashing liquid.
For technical drawings and 3-D models, click on a part number.
Pipe | Conduit | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Float Material | Electrical Connection | Trade Size | Thread Type | Gender | Each | ||
120V AC/240V AC Input Voltage | |||||||||||||||||
Polybutylene Plastic Body | |||||||||||||||||
| A | 1/2 | NPT | Male | 0.85 | 100 psi @ 70° F | -40° to 145° | 2 3/4" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Polybutylene Plastic | Spade Terminals | __ | __ | __ | 00000000 | 000000 |
| A | 1/2 | NPT | Male | 0.85 | 100 psi @ 70° F | -40° to 145° | 2 3/4" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Polybutylene Plastic | Wire Leads | __ | __ | __ | 00000000 | 00000 |
| A | 1/2 | NPT | Male | 0.85 | 100 psi @ 70° F | -40° to 145° | 2 3/4" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Polybutylene Plastic | Wire Leads | 1/2 | NPT | Male | 00000000 | 00000 |
Polybutylene Plastic Body and Splash Guard | |||||||||||||||||
| B | 1 | NPT | Male | 0.85 | 100 psi @ 70° F | -40° to 145° | 1 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Polybutylene Plastic | Spade Terminals | __ | __ | __ | 00000000 | 00000 |
PPS Plastic Body | |||||||||||||||||
| A | 1 1/4 | NPT | Male | 0.7 | 200 psi @ 70° F | -40° to 190° | 4 1/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.5 A @ 120 V AC | PPS Plastic | Wire Leads | __ | __ | __ | 0000000 | 00000 |
| C | 1 1/4 | NPT | Male | 0.7 | 100 psi @ 70° F | 32° to 190° | 4 13/16" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 15 A @ 120 V AC | PPS Plastic | Wire Leads | __ | __ | __ | 0000000 | 000000 |
316 Stainless Steel Body | |||||||||||||||||
| D | 1/2 | NPT | Male | 0.55 | 100 psi @ 70° F | -40° to 225° | 3 11/16" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.17 A @ 120 V AC | Polypropylene Plastic | Wire Leads | 1/2 | NPT | Male | 00000000 | 000000 |
| D | 1/2 | NPT | Male | 0.65 | 100 psi @ 70° F | -40° to 250° | 3 11/16" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.17 A @ 120 V AC | Nylon Plastic | Wire Leads | 1/2 | NPT | Male | 0000000 | 000000 |
| E | 1 | NPT | Male | 0.85 | 500 psi @ 70° F | -40° to 300° | 5 5/16" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 0.17 A @ 120 V AC | 304 Stainless Steel | Wire Leads | 1/2 | NPT | Male | 00000000 | 000000 |
| F | 1 | NPT | Male | 0.9 | 900 psi @ 70° F | -40° to 300° | 4 1/8" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 0.17 A @ 120 V AC | 316 Stainless Steel | Wire Leads | 1/2 | NPT | Male | 00000000 | 000000 |
Brass Body | |||||||||||||||||
| E | 1 | NPT | Male | 0.8 | 150 psi @ 70° F | -40° to 180° | 3 7/8" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 0.17 A @ 120 V AC | Buna-N Rubber | Wire Leads | 1/2 | NPT | Male | 0000000 | 000000 |
Through-Wall Horizontal-Mount
Float Switches for Fuels and Oils
Mount this switch through an unthreaded hole in your tank wall and secure with a nut from outside the tank. It activates process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float.
For technical drawings and 3-D models, click on a part number.
| For Hole Dia. | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Float Material | Electrical Connection | Includes | Each | |
120V AC/240V AC Input Voltage | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Polybutylene Plastic Body | ||||||||||||
| 5/8" | 0.85 | 100 psi @ 70° F | -40° to 145° | 2 7/8" | 1 Off (Normally Open)/1 On (Normally Closed) | SPST-NO SPST-NC | 0.28 A @ 120 V AC | Polybutylene Plastic | Wire Leads | Mounting Nut | 00000000 | 000000 |
Horizontal-Mount Hazardous Location
Float Switches for Fuels and Oils
Designed for use in areas where flammable substances are present, these switches are CSA certified for hazardous locations. Mount them through a tank wall. All are rated NEMA 4 for protection from washdowns. All are single pole, double throw (SPDT) and can be installed to turn one circuit from “off” to “on” (normally open) or from “on” to “off” (normally closed).
Switches with stainless steel body are more corrosion resistant than switches with brass body.
For technical drawings and 3-D models, click on a part number.
Pipe | Conduit | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Current | Float Material | Trade Size | Thread Type | Gender | Environmental Rating | Each | |
120V AC/240V AC Input Voltage | |||||||||||||||
Brass Body | |||||||||||||||
| A | 1 | NPT | Male | 0.9 | 1,000 psi @ 70° F | 0° to 220° | 1 3/4" | 5 A @ 120 V AC | Polypropylene Plastic | 3/4 | NPT | Male | NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 4 | 0000000 | 0000000 |
303 Stainless Steel Body | |||||||||||||||
| A | 1 | NPT | Male | 0.9 | 2,000 psi @ 70° F | 0° to 220° | 1 3/4" | 5 A @ 120 V AC | Polypropylene Plastic | 3/4 | NPT | Male | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 4 | 0000000 | 000000 |
Vertical-Mount Hazardous Location
Float Switches for Fuels and Oils
For use in locations with flammable gases and combustible dust, this switch is UL listed and CSA certified for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. Mount it vertically through the top of your tank. It’s rated NEMA 4 for protection from washdowns.
For technical drawings and 3-D models, click on a part number.
Pipe | Float | Conduit | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Current | Float Material | Lg. | Dia. | Electrical Connection | Trade Size | Thread Type | Gender | Each | |
120V AC/240V AC Input Voltage | ||||||||||||||||||
316 Stainless Steel Body | ||||||||||||||||||
| 1 1/2 | NPT | Male | 0.7 | 100 psi @ 70° F | 35° to 275° | 8 11/16" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 10 A @ 120 V AC | 316 Stainless Steel | 4 1/2" | 1 5/8" | Wire Leads | 3/4 | NPT | Female | 0000000 | 0000000 |
Vertical-Mount Compressed-Air
Float Switches for Fuels and Oils
Mount this switch through the top of your tank. It actuates with a compressed air valve instead of an electrical signal. The air valve opens when diesel fuel, hydraulic fluid, oil, or water moves the float.
For technical drawings and 3-D models, click on a part number.
Pipe | Air | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Air Inlet Pressure, psi | Float Material | Overall Lg. | No. of Ports | For Tube ID | Gender | Each | |
303 Stainless Steel Body | ||||||||||||||
| 1 | NPT | Male | 0.5 | 200 psi @ 70° F | 35° to 140° | 3 1/2" | 30-100 | 304 Stainless Steel | 7 5/8" | 3 | 3/32" | Male | 0000000 | 0000000 |
Horizontal-Mount Compressed-Air
Float Switches for Fuels and Oils
Install this switch through a tank wall. It actuates with a compressed air valve instead of an electrical signal. The air valve opens when diesel fuel, hydraulic fluid, oil, or water moves the float.
For technical drawings and 3-D models, click on a part number.
Pipe | Air | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Type | Gender | Min. Specific Gravity | Max. Pressure | Temp. Range, °F | Insertion Dp. | Air Inlet Pressure, psi | Float Material | Overall Lg. | No. of Ports | For Tube ID | Gender | Each | |
303 Stainless Steel Body | ||||||||||||||
| 1 | NPT | Male | 0.5 | 200 psi @ 70° F | 35° to 140° | 2 7/8" | 30-100 | 304 Stainless Steel | 6 7/8" | 3 | 3/32" | Male | 0000000 | 0000000 |