Ventilation pipe with spaced gas outlets - has elastic openings changing shape with different pressures for even outflow

摘要

At the gas outlets elastic openings are formed in inward or outward bulges of the tubes or hose. Thus they change shape by altering their curvature in dependence on the gas pressure prevailing at that point. When using rigid pipes elastic inserts can be provided at the outlet points to cause the closing action. ADVANTAGE - An even outflow is achieved over the entire length of the hose or pipe.