| 摘要 |
<p>Air outlet valve, partic. for pressure boilers or other components of heating installations, has a container (10) connected both to the outer atmosphere and the inner space of the unit. Also incorporated in a valve unit comprising a float (28) and a closure component (36). Though the hydraulic pressure of fluid present in the container (10) the float (28) lifts against a valve opening, sealing it off. Conversely, when the fluid level in the container drops, the float (28) drops and releases the valve opening (20). The float (28) takes the form of a cylindrical hollow body whose shape corresponds to that of the container (10), its outer diameter being slightly less than the container inner diameter. Its outer wall has lateral projections (30) which enable it to be guided inside the container (10).</p> |
