potable water system

基本解释

Series 709 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.
系列709双止回阀总成适用于防止受到污染的水回流进入到饮用水系统中。
Series 957, 957N, 957Z Reduced Pressure Zone Assemblies provide protection to the potable water system from contamination in accordance with national plumbing codes.
系列957，957N，957Z减压区总成按照美国国家管道规程为防止饮用水系统受到污染提供保护。
The Watts 994HMB fire hydrant reduced pressure backflow preventer meter is designed to protect the potable water system by preventing backflow through the fire hydrant.
美国瓦茨994HMB消防栓减压防回流阀仪表适用于保护饮用水系统，防止通过消防栓的回流进入饮用水系统。