| 摘要 |
<p>A pneumatically and temperature controlled valve construction adapted for interconnecting a pneumatic source to a pneumatically operating device when said construction senses one of a pair of certain values of vacuum and a certain temperature regardless of whether the others being sensed or not being sensed. The construction includes a single housing, a pair of vacuum operated valve means nested in the housing and a temperature operating valve means nested in the housing.</p> |
