The UNFO-PLS filtering system for grates, manholes, and street drains was created with a specific purpose:
To isolate the man-made environment from underground pipes to protect against mosquitoes, cockroaches, mice and bad odors.
It is a simple and effective method to make the streets clean but, more importantly, to combat the proliferation of insects and animals that are annoying and dangerous to the citizen's health.
UNFO has a calibrated float inside that stays closed when there is no water preventing animals and bad smells from escaping. It opens when there is water passage letting foliage and debris drain out.
Anti-mosquito filter system for drains | unfo-pls
The UNFO-PLS filtering system for grates, manholes, and street drains was created with a specific purpose:
To isolate the man-made environment from underground pipes to protect against mosquitoes, cockroaches, mice and bad odors.
It is a simple and effective method to make the streets clean but, more importantly, to combat the proliferation of insects and animals that are annoying and dangerous to the citizen's health.
UNFO has a calibrated float inside that stays closed when there is no water preventing animals and bad smells from escaping. It opens when there is water passage letting foliage and debris drain out.
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The Benefits of UNFO
- Isolates the environment
- Isolates the environment in which we live from that constituted by rainwater collection pipes with all the positive consequences that come with it.
- Facilitates cleaning
- Facilitates the cleaning of the storm drain because foliage, sand and other dirt remain trapped in the device until heavy rains arrive.
- Stops mice
- Reduces the presence of mice and cockroaches without the use of pest control poisons because they incorporate a special anti-intrusion system.
- No bad odors
- Eliminates bad odors that may escape from the storm drain because it acts as a "filter" and obstacle, thus improving air and room quality.
How UNFO Works
The operation of UNFO-PLS is based on an elementary principle that adjusts and operates its mechanism according to the intensity of rain and storm water.
- In dry weather and no rain, the device remains closed and isolates the sewer system from the roadway, thus preventing the passage of insects such as mosquitoes or cockroaches, animals such as sewer rats, and even bad odors.
- With little or moderate rainfall, UNFO-PLS partially opens allowing the little water to drain into the sump without stagnating but at the same time retains foliage and other debris.
- During heavy rainfall, when the volume of stormwater reaches substantial levels, the valve of the UNFO-PLS device opens wide under the same pressure as the water and allows it to drain quickly, which drags all the debris present with it from the sump to the sewer.
- The UNFO-PLS anti-mosquito system has total compatibility with all siphonable drains in their standard and most common sizes, as can be seen from the table below.
- It is also a device designed to be durable because it is made of regenerated High Density Polyethylene (HDPE), which guarantees its resistance to UV and infrared rays, acids and alkalis, and also to the most extreme temperatures both hot and cold. What's more, the material is even greener because it is totally recyclable.
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