美国瓦茨(Watts)防回流阀及附件 - 系列709/709DCDA安装维护手册 (6)

	好施简介 \| 美国洁具 \| 美国热水器 \| 美国阀门 \| 美国泵 \| 产品知识	英文网站商务问答联系方式
	服务是我们的天职　Service Is Our Business
福建省厦门市中山路豪公馆A801　　邮编：361001　　电话：592-2121956　　传真：592-2122287　　E-mail: 66@h6688.com


首页Home＞美国瓦茨防回流阀及附件 Watts Backflow Preventers & Accessories＞正文Text	【下一页Next】

19_RP/IS-709/709DCDA

系列709/709DCDA安装维护手册 (6)
Series 709/709DCDA Installation & Service (6)

美国瓦茨公司

四种基本类型的防回流阀
Four Basic Types of Backflow Preventers

	类型和用途 Type & Purpose	说明 Description	安装位置 Installed At	安装例子 Examples of Installations
1	减压区防回流阀用于高危险交叉连接和持续压力应用场合 REDUCED PRESSURE ZONE BACKFLOW PREVENTER For High Hazard Cross-connections and continuous pressure application.	两个独立的止回阀配置中间安全阀。配置关闭阀和球型测试旋塞。 Two independent check valves with intermediate relief valve. Supplied with shutoff valves and ball type test cocks	所有存在有害健康的污染可能性高，并且可能出现反压力或反虹吸的交叉连接的地方。持续压力。 All cross-connections subject to backpressure or back siphonage where there is a high potential health contamination. Continuous pressure.	主供水管道商用锅炉医院设施实验室设施废水处理汽车洗涤 Main supply lines Commercial boilers Hospital equipment Laboratory equipment Waste digesters Car washes
1	减压区总成高危险 REDUCED PRESSURE DETECTOR ASSEMBLY High Hazard	减压区防回流阀配置一个水表和旁路管道上的减压区 RPZ valve backflow preventers with a water meter and RPZ in bypass line.	消防系统主供应管道。检测泄漏和未经允许的用水。 Fire protection system supply main. Detects leaks and unauthorized use of water.	消防喷淋管道 Fire Sprinkler Lines
2	双止回阀总成用于低危险交叉连接和持续压力应用场合。 DOUBLE CHECK VALVE ASSEMBLY For Low Hazard Cross-connections and continuous pressure applications.	两个独立的止回阀。止回阀可更换进行维修和检测。 Two independent check valves. Checks are replaceable for repair & testing.	所有存在有害健康的污染可能性低，并且可能出现反压力或反虹吸的交叉连接的地方。持续压力。 All cross-connections subject to backpressure or back siphonage where there is a low potential health contamination. Continuous pressure.	主供水管道饲料蒸煮器罐和桶草地喷灌器消防喷淋管道商用游泳池 Main supply lines Food cookers Tanks & Vats Lawn Sprinklers Fire Sprinkler Lines Commercial Pools
	双止回阀检测器总成低危险 DOUBLE CHECK DETECTOR ASSEMBLY Low Hazard	双止回阀防回流阀配置一个水表和旁路管道上的双止回阀。 Double check valve backflow preventers with a water meter and double check in by pass line.	消防系统主供水管道。检测泄漏和未经允许的用水。 Fire protection system supply main. Detects leaks and unauthorized use of water.	消防喷淋管道 Fire Sprinkler Lines
	双止回防回流阀用于低危险交叉连接。持续压力应用场合。 DUAL CHECK VALVE BACKFLOW PREVENTER For low hazard cross-connections. Continuous pressure applications.	两个独立止回阀。止回阀可更换进行维修和检测。 Two independent check valves. Checks are replaceable for repair & testing.	存在健康危害的可能性低要求低流速系统的交叉连接的地方。 Cross-connections where there is a low potential health hazard and moderate flow requirements	住宅供水管道（在水表上）住宅消防喷淋系统 Residential Supply Lines (at the meter) Residential fire sprinkler systems
3	特殊防回流阀配置大气排气口用于小口径管道上的低危险交叉连接的地方。持续压力应用场合。 SPECIALTY BACKFLOW PREVENTERS with INTERMEDIATE ATMOSPHERIC VENT For low hazard cross-connections in small pipe sizes. Continuous pressure applications	两个独立止回阀配置中间真空断路阀和安全阀。 Two independent check valves with intermediate vacuum breaker and relief vent.	存在健康危害的可能性低的反压力或反虹吸的交叉连接的地方。持续压力。 Cross-connections subject to backpressure or backsiphonage where there is low health hazard. Continuous pressure.	锅炉（小）冷却塔（小）牛奶设施 Boilers (small) Cooling towers (small) Dairy equipment
			防止二氧化碳气体和碳酸水回流到饮料设备的主供水系统的压力出口地方 Pressure outlet to prevent backflow of carbon dioxide gas and carbonated water into the water supply system to beverage machines	预混合碳酸饮料设备 Post-Mix Carbonated Beverage Machine
	实验室水龙头双止回阀配置中间真空断路阀位于危险性小的小口径管道上 LABORATORY FAUCET DUAL CHECK VALVE with INTERMEDIATE VACUUM BREAKER In small pipe sizes for low hazard	两个独立的止回阀配置中间真空断路阀和安全阀。 Two independent check valves with intermediate vacuum breaker and relief vent.	在健康危险性低、与反压力或反虹吸相关的交叉连接的地方。 Cross-connections subject to backpressure or backsiphonage where there is low health hazard.	实验室水龙头和管道理发店和美容院洗涤盆 Laboratory Faucets and Pipe Lines Barber shop and Beauty Parlor sinks
4	大气真空断路阀用于危险性高的交叉连接与持续压力无关 - 水面上方152毫米处 ATMOSPHERIC VACUUM BREAKERS For high hazard cross-connections not subject to continuous pressure - 6" above flood rim.	单个浮子和阀瓣配置大口径大气端口 Single float and disc with large atmospheric port	交叉连接，与反压力或持续压力无关。安装在洁具上方152毫米以上。仅用于防止反虹吸现象。 Cross-connection not subject to backpressure or continuous pressure. Install at least 6" above fixture rim. Protection against backsiphonage only.	处理罐洗蝶机肥皂分发器洗衣机草地喷灌器 Process Tanks Dishwashers Soap Dispensers Washing Machines Lawn Sprinklers
	压力真空断路阀用于高危险交叉连接。持续压力应用场合 - 水面上方12英寸 PRESSURE VACUUM BREAKERS For high hazard cross-connections. Continuous pressure applications -12" above flood rim.	弹簧负载单个浮子和阀瓣，配置独立第一止回阀。配置关闭阀和球型测试旋塞。 Spring loaded single float and disc with independent 1st check. Supplied with shutoff valves and ball type test cocks.	这种阀门用于安装在持续压力饮用水供应系统上，比供应系统的溢流面高出 12英寸以上。仅用于防止反虹吸。 Valve is designed for installation in a continuous pressure potable water supply system 12" above the overflow level of the system being supplied. Protection against backsiphonage only.	实验室设备冷却塔商用洗衣机游泳池化工厂罐草地喷灌器 Laboratory equipment Cooling towers Commercial Laundry Machines Swimming Pools Chemical Planting tanks Lawn Sprinklers
	反虹吸，反溢出真空断路阀工厂安装时比水面高出1英寸现场安装时比水面高出6英寸 ANTI-SIPHON, ANTI-SPILL VACUUM BREAKER 1" above flood rim Factory installed 6" above flood rim Field installed	反溢出真空断路阀配置热塑塑料模块止回阀和浮子总成和青铜阀体 Anti-spill vacuum breaker with modular check & float assembly of thermo plastic Housing bronze body	室内应用点 Indoor point of use	化学分配器商用洗蝶机消毒器 Chemical Dispenser Commercial Dishwasher Sterilizers
	软管连接真空断路阀用于住宅和工业软管供应出口，与持续压力无关 HOSE CONNECTION VACUUM BREAKERS For residential and industrial hose supply outlets not subject to continuous pressure	单个止回阀，配置大气真空断路阀排气口。 Single check with atmospheric vacuum breakers vent.	直接安装在软管龙头、维修洗涤盆和墙上消防栓。不用于持续压力。 Install directly on hose bibbs, service sinks and wall hydrants. Not for continuous pressure.	软管龙头维修洗涤盆消防栓 Hose bibbs Service sinks Hydrants

要了解更多的交叉连接管理信息，请参阅F-50小册子。
For additional cross-connection control information, send for F-50 brochure.


首页Home＞美国瓦茨防回流阀及附件 Watts Backflow Preventers & Accessories＞正文Text	【下一页Next】

	类型和用途 Type & Purpose	说明 Description	安装位置 Installed At	安装例子 Examples of Installations
1	减压区防回流阀用于高危险交叉连接和持续压力应用场合 REDUCED PRESSURE ZONE BACKFLOW PREVENTER For High Hazard Cross-connections and continuous pressure application.	两个独立的止回阀配置中间安全阀。配置关闭阀和球型测试旋塞。 Two independent check valves with intermediate relief valve. Supplied with shutoff valves and ball type test cocks	所有存在有害健康的污染可能性高，并且可能出现反压力或反虹吸的交叉连接的地方。持续压力。 All cross-connections subject to backpressure or back siphonage where there is a high potential health contamination. Continuous pressure.	主供水管道商用锅炉医院设施实验室设施废水处理汽车洗涤 Main supply lines Commercial boilers Hospital equipment Laboratory equipment Waste digesters Car washes
1	减压区总成高危险 REDUCED PRESSURE DETECTOR ASSEMBLY High Hazard	减压区防回流阀配置一个水表和旁路管道上的减压区 RPZ valve backflow preventers with a water meter and RPZ in bypass line.	消防系统主供应管道。检测泄漏和未经允许的用水。 Fire protection system supply main. Detects leaks and unauthorized use of water.	消防喷淋管道 Fire Sprinkler Lines
2	双止回阀总成用于低危险交叉连接和持续压力应用场合。 DOUBLE CHECK VALVE ASSEMBLY For Low Hazard Cross-connections and continuous pressure applications.	两个独立的止回阀。止回阀可更换进行维修和检测。 Two independent check valves. Checks are replaceable for repair & testing.	所有存在有害健康的污染可能性低，并且可能出现反压力或反虹吸的交叉连接的地方。持续压力。 All cross-connections subject to backpressure or back siphonage where there is a low potential health contamination. Continuous pressure.	主供水管道饲料蒸煮器罐和桶草地喷灌器消防喷淋管道商用游泳池 Main supply lines Food cookers Tanks & Vats Lawn Sprinklers Fire Sprinkler Lines Commercial Pools
	双止回阀检测器总成低危险 DOUBLE CHECK DETECTOR ASSEMBLY Low Hazard	双止回阀防回流阀配置一个水表和旁路管道上的双止回阀。 Double check valve backflow preventers with a water meter and double check in by pass line.	消防系统主供水管道。检测泄漏和未经允许的用水。 Fire protection system supply main. Detects leaks and unauthorized use of water.	消防喷淋管道 Fire Sprinkler Lines
	双止回防回流阀用于低危险交叉连接。持续压力应用场合。 DUAL CHECK VALVE BACKFLOW PREVENTER For low hazard cross-connections. Continuous pressure applications.	两个独立止回阀。止回阀可更换进行维修和检测。 Two independent check valves. Checks are replaceable for repair & testing.	存在健康危害的可能性低要求低流速系统的交叉连接的地方。 Cross-connections where there is a low potential health hazard and moderate flow requirements	住宅供水管道（在水表上）住宅消防喷淋系统 Residential Supply Lines (at the meter) Residential fire sprinkler systems
3	特殊防回流阀配置大气排气口用于小口径管道上的低危险交叉连接的地方。持续压力应用场合。 SPECIALTY BACKFLOW PREVENTERS with INTERMEDIATE ATMOSPHERIC VENT For low hazard cross-connections in small pipe sizes. Continuous pressure applications	两个独立止回阀配置中间真空断路阀和安全阀。 Two independent check valves with intermediate vacuum breaker and relief vent.	存在健康危害的可能性低的反压力或反虹吸的交叉连接的地方。持续压力。 Cross-connections subject to backpressure or backsiphonage where there is low health hazard. Continuous pressure.	锅炉（小）冷却塔（小）牛奶设施 Boilers (small) Cooling towers (small) Dairy equipment
			防止二氧化碳气体和碳酸水回流到饮料设备的主供水系统的压力出口地方 Pressure outlet to prevent backflow of carbon dioxide gas and carbonated water into the water supply system to beverage machines	预混合碳酸饮料设备 Post-Mix Carbonated Beverage Machine
	实验室水龙头双止回阀配置中间真空断路阀位于危险性小的小口径管道上 LABORATORY FAUCET DUAL CHECK VALVE with INTERMEDIATE VACUUM BREAKER In small pipe sizes for low hazard	两个独立的止回阀配置中间真空断路阀和安全阀。 Two independent check valves with intermediate vacuum breaker and relief vent.	在健康危险性低、与反压力或反虹吸相关的交叉连接的地方。 Cross-connections subject to backpressure or backsiphonage where there is low health hazard.	实验室水龙头和管道理发店和美容院洗涤盆 Laboratory Faucets and Pipe Lines Barber shop and Beauty Parlor sinks
4	大气真空断路阀用于危险性高的交叉连接与持续压力无关 - 水面上方152毫米处 ATMOSPHERIC VACUUM BREAKERS For high hazard cross-connections not subject to continuous pressure - 6" above flood rim.	单个浮子和阀瓣配置大口径大气端口 Single float and disc with large atmospheric port	交叉连接，与反压力或持续压力无关。安装在洁具上方152毫米以上。仅用于防止反虹吸现象。 Cross-connection not subject to backpressure or continuous pressure. Install at least 6" above fixture rim. Protection against backsiphonage only.	处理罐洗蝶机肥皂分发器洗衣机草地喷灌器 Process Tanks Dishwashers Soap Dispensers Washing Machines Lawn Sprinklers
	压力真空断路阀用于高危险交叉连接。持续压力应用场合 - 水面上方12英寸 PRESSURE VACUUM BREAKERS For high hazard cross-connections. Continuous pressure applications -12" above flood rim.	弹簧负载单个浮子和阀瓣，配置独立第一止回阀。配置关闭阀和球型测试旋塞。 Spring loaded single float and disc with independent 1st check. Supplied with shutoff valves and ball type test cocks.	这种阀门用于安装在持续压力饮用水供应系统上，比供应系统的溢流面高出 12英寸以上。仅用于防止反虹吸。 Valve is designed for installation in a continuous pressure potable water supply system 12" above the overflow level of the system being supplied. Protection against backsiphonage only.	实验室设备冷却塔商用洗衣机游泳池化工厂罐草地喷灌器 Laboratory equipment Cooling towers Commercial Laundry Machines Swimming Pools Chemical Planting tanks Lawn Sprinklers
	反虹吸，反溢出真空断路阀工厂安装时比水面高出1英寸现场安装时比水面高出6英寸 ANTI-SIPHON, ANTI-SPILL VACUUM BREAKER 1" above flood rim Factory installed 6" above flood rim Field installed	反溢出真空断路阀配置热塑塑料模块止回阀和浮子总成和青铜阀体 Anti-spill vacuum breaker with modular check & float assembly of thermo plastic Housing bronze body	室内应用点 Indoor point of use	化学分配器商用洗蝶机消毒器 Chemical Dispenser Commercial Dishwasher Sterilizers
	软管连接真空断路阀用于住宅和工业软管供应出口，与持续压力无关 HOSE CONNECTION VACUUM BREAKERS For residential and industrial hose supply outlets not subject to continuous pressure	单个止回阀，配置大气真空断路阀排气口。 Single check with atmospheric vacuum breakers vent.	直接安装在软管龙头、维修洗涤盆和墙上消防栓。不用于持续压力。 Install directly on hose bibbs, service sinks and wall hydrants. Not for continuous pressure.	软管龙头维修洗涤盆消防栓 Hose bibbs Service sinks Hydrants