| 摘要 |
A flood valve is adapted to be mounted in an opening provided through a wall to normally separate a fluid on one side thereof from a relatively unpressurized space on the other side thereof. The valve includes an integrally-formed plastic body member having a forward portion mounted in the opening, an intermediate thin-walled section, and a rearward portion arranged in the unpressurized space. A piston is slidably mounted in a bore provided in the forward portion to engage the rearward portion, and forms a sealed chamber within the bore adjacent the thin-walled section. A heating element encircles the thin-walled section and may be selectively energized to melt the same, and to allow the rearward portion and the piston to separate from the forward portion. After such separation, fluid may pass through the forward portion bore to enter the unpressurized space.
|
