Читать книгу Mechanics of the Household - E. S. Keene - Страница 36

—In the use of the systems of hot-water heating described, every radiator must be supplied with an air vent of some kind to take away the trapped air which accumulates through use. Any kind of a valve will serve as a vent for hand regulation and generally such a cock as is shown in Fig. 10 is employed.

Fig. 44.—Automatic air vent for hot-water radiators.