| 摘要 |
<p>The object of the valve according to the invention is to substantially reduce the electrical power required for operating the system by employing, in place of magnetic action, the force generated by the pressure produced by an air pump which is in its turn powered by electricity. Valve (1) basically uses, in place of magnetic action, the force generated by the pressure produced by air pump (2) acting inside compartment (3) equipped with rubber membrane (4). The valve is normally closed automatic with pneumatic servo control and with the possibility of regulating downstream pressure and opening time. <IMAGE></p> |
