| 摘要 |
<p>The valve (1) has an elastically pressurized movable valve body (4) moved in direction for opening the valve by gas pressure against elastic force. Another elastically pressurized movable valve body (15) is arranged in the former valve body, and is moved for opening the valve by another gas pressure complementary to the former gas pressure against the elastic force pressurizing the valve. The former valve body is spring loaded with a coil spring (11), and the latter valve body is spring loaded with another coil spring (16). The valve comprises an elastic ring seal (6). Independent claims are also included for the following: (1) a screw plug for transmission, comprising a ventilation valve (2) a method for ventilating transmission using the ventilation valve.</p> |
