The gently water energy conserving warm-air valve sloves the techonology problem that the blast funace warm-air pipeline valve can not be used normally, which includes valve body, valve cover, valve board. The valve body, valve cover and right-and-left flange shell uses layered refractory material lining covering, the water-cool pipeline is arranged on the right-and-left flange seal surface. And the symmetry face of the outside valve board also uses layered refractory material lining covering, the water-cool pipeline is arranged in its inner part. The related used layered lining covering includes heat preservation layer, heat insulation layer and hegh temperature layer; each one can use fire-proof lightening cast material and heavy cast material. Wherein the water using quantum is only equal to 25í½30úÑ water quantum of the warm-air valve, and it can reduce wind temperature lost, improve the wind temperature by 10í½20íµ, bear some large heat impact and heat fluctuate, have long longevity.