ASSE 1056-2013（R2021）仅适用于分类为防泄漏真空断路器组件（SVB）的组件。这些组件设计用于安装在通常处于持续压力条件下的水系统中。在供水管线中安装防泄漏真空断路器组件，以防止非饮用材料仅因反虹吸而回流到饮用水供应中。它们不适用于向组件施加背压的任何系统。当系统加压时，进气阀关闭，以防止气流通过止回阀，并消除通风口溢出。

ASSE 1056-2013(R2021) applies only to those assemblies classified as spill resistant vacuum breaker assemblies (SVB). These assemblies are designed for installation in water systems that are normally under continuous pressure conditions. Spill resistant vacuum breaker assemblies are installed in the water supply lines to prevent the backflow of non-potable material into the potable water supply caused by backsiphonage only. They are not for use in any system where backpressure is applied to the assembly. When the system is pressurized, the air inlet valve closes to prevent a flow through the check valve and to eliminate vent spillage.