| 摘要 |
<p>An over filling interdiction and roll over valve (10) comprising a housing (12) defining a confined space (18) formed with fluid inlets (20), a fluid outlet port (22) at a top end of the confined space, and a valve seating (24) bounding the outlet port. A valve assembly is located within the confined space and comprises a first stage member (32) and a second stage member (34), both being substantially coaxially displaceable within the housing. The first stage member has at a bottom end thereof a substantially elongated slit-like inlet aperture (36), and at a top end thereof an outlet aperture being in flow communication with the inlet aperture. The first stage member is axially displaceable between a first position in which the outlet aperture progressively sealingly engages the outlet port of the housing, and a second position in which it is disengaged therefrom. The second stage member is a float fitted with a flexible closure membrane strip (66) anchored at one end thereof to a top wall (62) of the float member. The closure membrane faces the inlet aperture of the first stage member, and the second stage member is displaceable between a first position in which the closure membrane sealingly engages the inlet aperture, and a second position in which it is progressively disengaged therefrom. At least one anchoring member (42) extending between the first stage member and the second stage member (42).</p> |
