| 摘要 |
A multiflapper relief valve wherein individual flapper valve members are sector shaped laying in a common plane and rotatable through an arc from the closed or seated position to the open position and wherein each of the flapper valve members are provided with a cricket spring of the leaf-type to preload them to a selected value, which value must be overcome by fluid in the system in which the relief valve is used in order to unseat the valve members. When the fluid pressure in the system is greater than the cracking pressure, unseating occurs and the cricket spring thereafter exerts a substantially insignificant, lower force in comparison once the flapper valve member is moved off of its seat and imparts a snap opening and closing action to each of the sector-shaped valve members.
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