Another modification of the Aereco supply valve

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With manual adjustment. The valve is installed either on the sash or on the frame of the unit. In fact, this is an opening closed with decorative grilles on both sides, equipped with a valve, a filter element and a flap to regulate the air flow. The Aereco supply valve is mounted on the window sash

Automatic valve. The capacity of such devices is controlled electronically, using special sensors that monitor the microclimate in the room and open the valve accordingly. This is much more convenient than constantly adjusting manually, but the cost of automatic models is quite high.
Seam valve. The easiest to install and most venezuela mobile database way to ventilate window units. It is mounted in the sash rebate and is hardly noticeable from the outside. It does not require milling grooves or drilling holes - it is enough to trim the seal.
Slotted valve. Structurally very similar to the adjustable version. The only difference is that most models do not have the ability to control the incoming air flow.
Air-Box Standard Valve

Ventilated handle. The lower part of the opening handle is made with ventilation holes and slightly larger than usual.
Ventilated handle SK-201

Surface-mounted ventilation modules. Most often attached to the sash, they have a bulky appearance, but are quite effective (compared to the above-mentioned window valve options).
Pros and cons of supply valves

Pros:

Ventilation occurs without drafts and the ingress of foreign contaminants from the street;
Continuous operation ensures an uninterrupted supply of fresh air into the room.
Most devices are easy to use and install.