Ventilation is needed in any room, but for the effective operation of this system it is important to know which type of equipment to use, as well as where to install it. For example, in bathrooms and bathrooms, such devices are needed more than anything else. Many manufacturers today offer household exhaust fans, which have different capacities. When choosing, it is important to pay attention not only to this characteristic, but also to the control method, which affects ease of use and cost. There are mechanical and electronic models, but both can have an indication of the operation on the panel.
Usually they have a non-return valve and can solve the problem arising from high humidity. But to buy any device does not mean to solve the problem. It is important to choose the right unit so that the exhaust fan copes with unpleasant odors and high humidity. In order to make a choice, it is necessary to consider several models.
Hoods overview with valve: ERA D 125
You can purchase this device for 1,400 rubles. It is an axial fan that can be installed in bathrooms, bathrooms and kitchens. The rooms will be protected from moisture from neighboring apartments and unpleasant odors thanks to a non-return valve. The design has a removable ultra-thin front panel, which is based on white ABS plastic that combines with most interiors. Installation is carried out to the wall with screws.
Specifications
The above hood with check valve has a duct diameter of 125 mm. Productivity reaches 140 m 3 per hour. The design does not provide for a timer. The design is not splashproof.
Power is 10 watts. Overall dimensions are 180x180x99.5 mm. The device weighs 0.65 kg. It is powered by a voltage of 220 V. Before buying a device, you must consider that it does not have a humidity sensor.
Overview of the positive features of the model
If you want to install a hood with a non-return valve in the bathroom, you should consider the SLIM 5C model, which has many advantages, among which are:
- back draft protection;
- the possibility of operation for the purpose of periodic or permanent ventilation;
- thin front panel;
- fairly high heating temperature;
- intended for continuous operation;
- exception of engine overheating.
If you consider the benefits in more detail, you should pay special attention to protection against backdraft. Responsible for this is a double-leaf spring-loaded structure made of plastic, which eliminates the return draft from the ventilation duct.
By installing this hood with a non-return valve in the bathroom, you will almost not notice the device, because it projects only 9 mm above the surface. The scope of the device is quite wide. You can install it not only in the bathroom and in the kitchen, but also in other domestic premises.
Installation is carried out exclusively on the wall. The connection is made with an air duct with a diameter of 125 mm. Installation to be carried out in the ventilation shaft. The whole structure is made of ABS plastic, including the front panel, axial fan valve, housing, non-return valve, and also the impeller. The front panel is removable.
The heating temperature can reach 40 ° C. The design provides for the presence of an engine on ball bearings, the service life of which is increased and can reach 40,000 hours. The described exhaust valve with a check valve has a low power consumption. It can be used for continuous operation. The unit does not provide maintenance.
Overview of the hood brand Soler & Palau SILENT-100 CZ
This equipment can be purchased for 1 800 rubles. It is an overhead axial fan with a power of 8 watts. Contaminated air will not enter the room through the device. The device processes 95 m 3 per hour. It is enclosed in a waterproof housing. By installing the described hood with a non-return valve, you can control it mechanically. The noise level during operation is 27 dB.
The device has one speed. The equipment does not have height and timer controls. The installation diameter is 100 mm. Case color is white. The hood corresponds to the second class of electrical safety. It is powered by a 230 V network. Its overall dimensions are 15.8 x 15.8 x 8.4 cm. The fan weighs 0.57 kg.
ERA 4C fan review
If you want to purchase a hood with a non-return valve, you should pay attention to the model mentioned in the subtitle. Its cost is only 380 rubles. The fan is overhead and its power is 14 watts. Due to the non-return valve, polluted air will not enter the room. The device is capable of processing 97 m 3 per hour. It has a waterproof housing.
This device does not have a timer and height adjustment, like the device described above. The equipment can operate at one of two speeds. Management is electronic. The noise level is kept at around 35 dB. It is based on plastic. Installation diameter reaches 100 mm. This fan for exhaust with a non-return valve has a mosquito net. The overall dimensions of the device are 15x15x8.4 cm, its weight is 0.48 kg.
Hood overview of the brand Electrolux EAFR 100
The EAFR 100 from Electrolux is an alternative market offer, which you can purchase for 1,500 rubles. The fan is axial; during installation, it is superimposed on the surface. Power reaches 15 watts. The equipment does not allow contaminated air to enter the room.
The device is capable of processing 100 m 3 of air per hour. The case is waterproof. There is no timer and height adjustment in the design. The noise level is 30 dB. It is based on plastic. The installation diameter is 98 mm. Overall dimensions: 15x14 x7.5 cm, unit weighs 0.46 kg.
Overview of the hood brand ERA D 100
Before you purchase a bathroom hood with a non-return valve, you should familiarize yourself with its main characteristics and features. An excellent example is the model ERA D 100. Its cost is 750 rubles. The equipment is capable of periodic and continuous ventilation in rooms for various purposes, including:
- Bathrooms
- shower rooms;
- Bathrooms
- the kitchen.
The product has a durable case. The engine has built-in thermal protection and a bronze bushing. The manufacturer completes the equipment with a check valve. On the front panel there is an indicator of the display of the product.
Model Specifications
If you want to buy a hood in the toilet with a check valve, then you should pay attention to the model that was described above. It is mounted on a duct with a diameter of 100 mm. The equipment does not provide for a timer and protective execution. The noise level during operation reaches 35 dB.
Overall dimensions are 150x150x85 mm. The device weighs 0.5 kg. It is powered by a 220 V network. There is no humidity sensor in the design. Productivity reaches 97 m 3 per hour.
Positive features
The above model of hoods for bathrooms and kitchens has many advantages. Among them, protection against backdraft and the possibility of wall mounting should be highlighted. You can use the equipment for periodic and permanent ventilation.
The design is classic, thanks to which it allows you to fit the device into any interior. The equipment works due to an engine with built-in thermal protection. The front panel, impeller and housing are made of durable plastic.
Features of placing the valve on a cooker hood
If you decide to install a check valve on a cooker hood, you must consider that the system may have one or more air intake points. The latter through the ventilation channel will go to the street or to the mine. To avoid reverse thrust, a single valve, which is located in the duct, will be sufficient.
If the system is more complex due to the presence of several openings and hoods for natural ventilation, then slightly different valve placement rules are used. Firstly, on each branch it will be necessary to install such a device. This is required to prevent redirection of air towards the hood when it is inactive. Secondly, the installation of a check valve on the hood provides for the presence of another device at the outlet of the ventilation system. With full sealing of the channel this is not necessary, but practice shows the feasibility of installing the valve in this place.
Thirdly, the device should be located at the point to which convenient access will be provided. This is because the equipment requires periodic cleaning of fat deposits and adhering dust, otherwise the shutters will be completely blocked during reverse draft.
Near the entrance to the mine shaft of an apartment building, special attention must be paid to installing the valve. The general ventilation system is a cavity with a positive temperature, protected from sunlight. Humid air periodically enters there, which creates ideal conditions for the development of microorganisms. Rodents, birds and insects often live there. Air in such mines rarely meets the requirements for residential premises. Even in the case of regular sanitization of the mine, the possibility of air penetration into the apartment by means of backdraft should be excluded.
The backpressure valve for the hood in the kitchen can be installed taking into account the need for variable operation of forced and natural ventilation. In this case, a tee is installed near the ventilation grill , and the valve itself is located on the branch for natural ventilation. Another solution is the use of a special design in the form of a grill with two openings for both types of ventilation.
Features of valve manufacturing
Despite the fact that the price is not high for a check valve for the hood, you can also make it yourself. To do this, take care of the availability of:
- ventilation grill;
- soft records;
- thermogun with glue.
As for the plates, the film from the fluorographic apparatus can act as them. On the inner side of the grill it is necessary to glue the plates so that they are fixed on opposite sides. The middle parts should move freely. This device is the simplest non-return valve. The grille is installed in place, and it will work without passing air from the mine.
Finally
A fairly common phenomenon is the occurrence of reverse thrust, which entails many negative consequences. By installing a check valve on the ventilation, you can solve this problem. Before acquiring such a device, it is important to understand its design features.
Among other varieties, single-leaf gravity devices should be distinguished, in which the air flow from the room will exert pressure on the sash. In the absence of movement, it closes. Another variation is butterfly valves using springs. They are also called a butterfly and have 2 shutters in the design, folding at overpressure.