| 摘要 |
An air release valve includes a housing having a fluid inlet and a fluid outlet, a valve plate within the housing between the inlet and outlet, the valve plate having a pair of discrete apertures isolated from each other; a valve seal assembly including a seal engageable with the valve plate overlying the apertures; a float located in the housing upstream of the valve plate and connected to the seal, the float displaceable between first and second positions in the housing wherein displacement of the float in one direction progressively detaches successive portions of the seal from the apertures, the float having a tapered end remote from the seal.
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