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+86 189 8978 2810

Straight Rod Low Density Float Level Switch with Hirschmann Connector(double ball)

Case Quantity
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Low density float switch for oil and alcohol liquids

1-inch threaded stainless steel float switch

Double-ball design for high and low level control

Hirschmann connector for plug-and-play maintenance

Stable signal transmission with anti-interference performance

Corrosion-resistant stainless steel structure

Imported reed switch with reliable operation

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Application

Oil & Fuel Storage Systems

Liquid level monitoring for oil tanks, diesel, lubricating oil, and fuel storage equipment.

Chemical & Solvent Applications

Reliable level detection for alcohol, solvents, and chemical liquid containers.

Pump & Valve Control Systems

Automatic pump start/stop and solenoid valve control based on liquid level changes.

Industrial Automation Equipment

Stable signal transmission and level control solutions for automated industrial processes.

Low-Density Liquid Monitoring

Accurate detection for low specific gravity liquids requiring sensitive and reliable switching performance.

Description

Description Background

The straight rod stainless steel low density float level switch with Hirschmann connector is a reed switch type liquid level controller designed for low specific gravity liquids such as oil, diesel, alcohol, and chemical liquids. The low-density float ball provides stronger buoyancy and more stable switching performance compared with standard float switches.

Featuring a Hirschmann industrial connector, the switch enables quick maintenance, clean wiring, and reliable signal transmission. The detachable plug design simplifies replacement and improves efficiency in industrial automation systems.

Made of stainless steel with laser welding technology and imported reed switch components, the product offers excellent corrosion resistance, stable operation, and long service life. The double-ball version supports high/low level monitoring and is suitable for oil tanks, fuel systems, chemical containers, pump control, and liquid level alarm applications.

Features

01DEPENDABLE
Made from low-density nitrile rubber, the float offers excellent resistance to impact and accidental drops, making it durable and less prone to damage. Its internal independent closed-cell structure prevents water from entering even if the outer surface is damaged, so the float will not sink and can continue to provide reliable buoyancy and normal operation.
Low Density Float
Low Density Float
02EFFICIENT
Advanced seamless laser welding provides smooth, strong joints with excellent sealing performance, enhanced structural integrity, and long-term durability.
Precision Laser Welding for Durable Sealing
Precision laser welding with smooth, burr-free welds and a secure leak-resistant bottom
03SECURE
Equipped with a Hirschmann-style connector for secure connection, reliable signal transmission, and convenient installation and maintenance.
Hirschmann connector
Hirschmann connector
04CONVENIENT
Designed with durable materials and reliable construction for stable performance and extended service life, reducing maintenance and replacement costs.
Long Service Life
Long Service Life

Technical Details

Product Type:

Float Level Switch

Product Model:

Material:

Stainless Steel (304/316 Optional)

Size:

See attached drawing

Type:

Straight Rod Low Density Float Level Switch with Hirschmann Connector(double ball)

Operating Temperature:

-30°C to +120°C

Max Contact Rating:

10VA (1A1) / 50VA (2A1)

Max Switching Voltage:

100V AC/DC (1A1) / 220V AC/DC (2A1)

Max Switching Current:

0.5A (1A1) / 1.5A (2A1)

Max Breakdown Voltage:

110V AC/DC (1A1) / 300V AC/DC (2A1)

Max Contact Resistance:

100mΩ (1A1 / 2A1)

Connector Type:

Hirschmann Industrial Connector

Installation Type:

Threaded Mounting

Switch Type:

Imported Reed Switch

Protection Level:

IP65 or Higher

Applicable Liquid Specific Gravity:

≥0.65 g/cm³ (customizable)

Feature:

Plug-and-play detachable connector structure for low-density liquids

Accessories

We reserve the right to make technical alterations without prior notice.
Dimensions
Wiring diagram

What is a low density float level switch used for?

A low density float level switch is specially designed for liquids with low specific gravity, such as: Oil Diesel Alcohol Fuel Light chemical liquids Compared with standard float switches for water, low density models use specially designed floats to ensure reliable buoyancy and stable switching in lighter liquids.

What is the advantage of the Hirschmann connector?

The Hirschmann connector provides: Quick plug-and-play installation Easy maintenance and replacement Stable electrical connection Better protection against loose wiring More professional industrial wiring structure It is widely used in industrial automation and liquid control systems.

What material is the float switch made of?

The float switch is made of stainless steel, including the float ball and rod structure, providing: Excellent corrosion resistance High mechanical strength High temperature resistance Long service life 316 stainless steel customization is available for more corrosive media.

Why is this float switch suitable for oil and alcohol?

Standard float switches designed for water may not float properly in low-density liquids. This model uses a specially designed low-density float structure with improved buoyancy, making it suitable for: Oil tanks Fuel systems Alcohol containers Lubrication systems Light chemical liquid control

Is it normally open (NO) or normally closed (NC)?

It supports both Normally Open (NO) and Normally Closed (NC), depending on the float orientation. The switching logic can be changed by reversing the float by 180°. Lower-Open Type (Default) ① When the liquid level rises, the float moves away from the reed switch position, and the switch turns OFF. ② When the liquid level falls, the float returns to the reed switch position, and the switch turns ON. Upper-Open Type ① When the liquid level rises, the float returns to the reed switch position, and the switch turns ON. ② When the liquid level falls, the float moves away from the reed switch position, and the switch turns OFF. Note The factory default is usually the lower-open type, but users can adjust it according to control requirements.

Can it directly control pumps or valves?

No. The internal reed switch only supports low current and should not directly drive: Water pumps Solenoid valves Contactors High-power alarms Recommended solution: Alarm or valve → use relay Pump → use relay + contactor Direct connection may damage the reed contacts.

What are the advantages of the straight rod structure?

Easy vertical installation Stable float movement Suitable for narrow tanks Reliable switching performance Suitable for industrial liquid level systems

What liquids are suitable for this float switch?

Suitable for: Diesel Fuel oil Lubricating oil Alcohol Light chemical liquids Other low-density media compatible with stainless steel Not recommended for: Heavy sludge High-viscosity liquids Liquids with large solid particles

Can rod length and connector type be customized?

Yes. Customization options include: Rod length Float quantity Float spacing Thread size Cable length Connector type OEM / ODM production

What should buyers confirm before ordering?

Buyers should confirm: Liquid type Liquid density / specific gravity Working temperature Pressure conditions Installation direction Rod length Thread size NO / NC logic Required cable length Quantity and customization requirements Low-density liquid applications should especially confirm liquid specific gravity before production.

What are the advantages of the single-ball low density model?

Higher sensitivity Faster response Compact structure Suitable for limited installation space Ideal for point-level detection It is suitable for compact oil tanks and small liquid level control systems.

When should the single-ball model be selected?

Choose the single-ball model if: Only one switching point is required Installation space is limited Simple alarm or control function is needed High sensitivity is preferred

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