Backflowpreventionassemblytest

Air vents are designed for use on heating systems. Our line includes products such as high-capacity air vents that provide automatic air venting for hot or cold water distribution systems and models with a manual vent feature for fast venting of residential and commercial systems.

Double Check Backflow Preventer Valves are designed to prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are objectionable to the potable water supply, but non-health hazards.

backflowpreventer中文

Image

Image

Image