Wall air supply valves WI-150 / SPK-150 and WI-390 / SPK-390

Wall inlet valves WI-150 / SPK-150 and WF-Z90 / SPK-Z90 have a high thermal insulation property due to the cellular structure of the walls of the casing and the narthex. The nipple of the valve provides a tight closing of the valve due to frost-resistant rubber and pile seals, fixed around its perimeter. Valves WI-150 / SPK-150 and WF-390 / SPK-390 - normally open state, open due to the pushing spring and gravity acting on the narthex. To close the valve, it is necessary to apply a force of not more than 1.5 kg - for WI-1501SPK-150 and not more than 2 kg - for WI-390 / SPK-390. The curved shape of the narthex makes it possible to efficiently direct the air flow to the upper part of the house, which, with the cellular content of the bird, eliminates the direct hit of cold supply air on the bird. The WI-Z90 / SPK-390 valve with high performance is especially effective in the southern regions of Russia and allows you to successfully implement cost-effective minimum / transition ventilation schemes with inflow through the side walls and exhaust through fans on the end wall without resorting to installing exhaust roof shafts. Overall dimensions of WI-150 with a flange (width x height x depth): 690x305x190 mm Dimensions WI-150 for installation (width x height x depth): 650x265x200 mm. Overall dimensions of WI-Z90 with a flange (width x height x depth): 940x520x250 mm Dimensions for installation (width x height x depth): 900x480x250 mm.