Key Features
- Simple mechanical operation with no external power required
- Corrosion-resistant body and float for long service life in marine environments
- Available in multiple connection sizes (e.g., 1/2", 3/4", 1", 2") to suit common vent lines
- Suitable for fuel oil, diesel, lubricating oil, and freshwater tanks
- Prevents overfill spills and ensures proper tank breathing
- Compact design with low pressure drop for efficient venting
- Minimal maintenance – all metal or with high-grade plastic floats
Technical Specifications
| Specification | Details |
|---|---|
| Material | Marine-grade brass or stainless steel (corrosion-resistant) |
| Connection Size | 1/2" to 2" BSP or NPT threads |
| Float Material | Stainless steel or high-density polypropylene |
| Operating Pressure | Atmospheric / low pressure (up to 1 bar) |
| Temperature Range | -20°C to +80°C |
| Closing Level | ~50% to 80% of tank capacity |
| Suitable Media | Diesel, fuel oil, freshwater, lubricating oil |
| Weight | Approx. 0.5 kg – 2 kg depending on size |
Frequently Asked Questions
How does a tank vent float work?
The float is installed in the tank vent line. Under normal conditions, the float rests low, allowing air to escape or enter. When the liquid level in the tank rises, the float is lifted by buoyancy and eventually seals the vent opening, preventing liquid from spilling out.
Can these floats be used with diesel tanks?
Yes, our tank vent floats are compatible with diesel fuel, heating oil, lubrication oil, and freshwater. The materials are selected to resist corrosion and fuel degradation.
What connection sizes are available?
We offer vent floats with 1/2", 3/4", 1", and 2" male/female threads with NPT or BSP options. Custom sizes may be available on request.
Are these floats suitable for unmanned engine rooms?
Absolutely. Because they require no power and are completely mechanical, they are ideal for automatic overfill protection in unattended spaces.
Inquire About This Product
Contact us for pricing, availability, and bulk orders:
📧 [Email protected by JavaScript]
📞 [Phone protected by JavaScript]