| 摘要 |
A valve (10) for use between a suction line (14) and a casing. In one embodiment, the casing is a teat cup assembly (12). The valve or valve assembly comprises a valve housing (18) connected to the outlet of a teat cup assembly (12). The housing (18) includes a nipple (40) formed in the bottom portion thereof for connection to a milk suction line (14). A ball member (16) is mounted inside the valve housing (18) and adapted to seat at the opening from the housing (18) into the nipple (40) when the interior of the housing (18) is exposed to atmospheric pressure. The valve assembly (12) further includes a plunger means (50) slidably mounted in the wall of the valve housing (18), and the plunger means (50) is adapted to slide inwardly into the valve housing (18) when the pressure in the housing (18) falls below atmospheric pressure. The inward movement of the plunger means (50) is adapted to dislodge the ball member (16) from its seated position at the nippel opening. |
