| 摘要 |
<p>An apparatus for pressurizing and purging the interior of an enclosure (1) comprises a purge valve (3) operable to admit gas to the enclosure either at a high flow rate or at a low flow rate, and a pneumatic control system for the purge valve including a purge/power selector module (6), a enclosure pressure module (4) and a timing module (5) mounted on respective faces of the purge valve body. The purge valve body serves as a manifold providing necessary connections of the control modules (4-6) with each other and the enclosure interior whereby pipe connections are minimized.</p> |
