| 1. | Potable water system in public housing estates
公共屋的食水系统 |
| 2. | P & s : potable water system in public area , rain , surface runoff , waste water should be discharged in separation
给排水：公共部分饮用水系统，雨、污、废水分流排放。 |
| 3. | Series 774x double check valve assemblies are designed to prevent the reverse flow of polluted water from entering the potable water system
系列747双止回阀总成用于防止污水回流进入饮用水系统中。 |
| 4. | Series 774 double check valve assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system
系列747双止回阀总成用于防止污水回流进入饮用水系统中。 |
| 5. | The safe drinking water act amendment of 1986 prohibits the use in potable water systems of any solder having a lead content in excess of 0 . 2 %
G 1986年颁布的《美国安全饮用水法》规定，任何用于饮用水系统的焊料其铅含量不得超过0 . 2 % |
| 6. | 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。 |
| 7. | Vent discharges co2 gas to atmosphere in the event of fouling or malfunction of check no . 2 thereby safeguarding the potable water system from co2 gas contamination
万一止回阀2号出现污染或故障，排气口将二氧化碳气体排放到大气中，从而保护饮用水系统不会受到二氧化碳气体的污染。 |
