| 摘要 |
<p>PCT No. PCT/SE86/00360 Sec. 371 Date Apr. 3, 1987 Sec. 102(e) Date Apr. 3, 1987 PCT Filed Aug. 11, 1986 PCT Pub. No. WO87/01172 PCT Pub. Date Feb. 26, 1987.A valve for the addition of water to electrochemical accumulator batteries and for maintaining the flow of liquid at a constant level. A membrane in a valve body is biased by means of a spring against a wall arranged concentrically with an inlet orifice, the wall creating an inner chamber of circular cross-section, and an outer chamber which is of annular cross-section and is connected to an outlet connection via a constricted orifice. A spindle at the center of the membrane passes freely through the inlet orifice and exhibits outside the latter a conically enlarged part, the cross-sectional area of which increases in proportion to the distance to the inlet orifice, serving as a valve seat, and which is intended to provide a seal when the spring yields to the membrane.</p> |
