backflow
backflow
1. The 909 Series backflow preventer is designed so that the critical level of the relief valve is positioned below the first check.
909系列防回流阀的设计结构使得安全阀的临界水位位于第一止回阀下方。
2. The 912HP is designed for use in non-health hazard continuous pressure applications and provides protection against backpressure and backsiphonage backflow.
912HP适用于非健康危害连续压力应用环境，用于防止反压力和反虹吸产生的回流。
3. The N9-CD is designed to prevent high hazard backsiphonage backflow and low-head backpressure (10ft. or less) from contaminating the potable water supply.
CD适用于防止高危害反虹吸回流和低压头反压力（3米以下）回流污染饮用水供应系统。
4. CPI special-purpose SMT backflow brazier lubricating oil. textile stereotypia machine stretching machine chain link oil.
CPI专用SMT回流焊炉润滑油.纺织定型机拉幅机链条油.
5. UL/FM approved backflow preventers must include UL/FM approved OSY.
FM认证防回流阀必须包括UL/FM认证外阀杆轭架。
6. TK-DL has Digital Print-Out and Computer Download An advanced piece of test equipment designed to make pressure and differential gauges obsolete in the testing of backflow preventers.
TK-DL具有数字打印和电脑下载功能先进的一件式检测设备,用于在检测防回流阀时完全取代压力和压差表。
7. The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
TK-DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
8. In the event of negative supply pressures, such contaminated fluids must not be allowed to backflow to the potable water supply source by backsiphonage or other cause.
一旦出现反供应压力，如污染的流体，则必须不允许由于反虹吸或其他原因回流到饮用水供应系统中。
9. In the event of negative supply pressure such contaminated fluids will not backflow to the supply source by backsiphonage.
万一存在这种污染流体的反压力，则要避免由于反虹吸而回流到供应水源中。
10. The following procedure is not a specific recommendation. The Watts series of test kits are capable of performing any of the recognized Backflow Preventer test procedures.
下列检测程序并不是特别推荐的检测程序。美国瓦茨检测组件系列能够执行任何经过验证的防回流阀检测程序中的任何一种。
11. The following procedure is not a specific recommendation. The Watts series of test kits are capable of performing any of the recognized Backflow test procedures.
下列检测程序并不是特定的建议。美国瓦茨检测组件系列能够执行任何广泛采用的防回流阀检测程序。
12. The following Test Procedure is one of several that is recognized throughout the United States for testing Backflow Preventers.
下列检测程序是美国检测防回流阀通用的几种检测程序中的一种。
13. The following Test Procedure is one of several that is recognized throughout the United States for verification of the functioning of Backflow preventers.
下列检测程序是美国通用的几种检测程序之一,用于检验防回流阀的功能。
14. Installing a backflow preventer in a pit or vault is not recommended.
不建议在坑内或拱顶内安装防回流阀。
15. Installing a backflow preventer in a pit or vault is not recommended as flooding of the pit will cause a crossconnection.
不建议在坑内或拱顶内安装防回流阀，因为坑内被淹将导致交叉连接。
16. Annual inspection is required of the backflow preventer to insure proper operation of the device. It is also recommended that a strainer be installed upstream of the backflow preventer.
为了保证装置的正常运行,要求对防回流阀进行年度检查。还建议在防回流阀上游安装一个过滤器。
17. To avoid this discharge, install a spring-loaded check valve ahead of the backflow assembly to "lock-in" the downstream pressure.
为了避免这种排放，应该在防回流阀总成前面安装一个弹簧负载止回阀来“锁定”下游压力。
18. To avoid this discharge, install a spring-loaded, rubber seated check valve ahead of the backflow assembly.
为了避免这种排放，要在防回流阀总成前面安装一个弹簧驱动、橡胶阀座的止回阀。
19. To avoid this discharge, install a spring-loaded rubber seated check valve ahead of the backflow assembly to "lock-in" the downstream pressure.
为了避免这类排放，要在防回流阀总成前安装一个弹簧负载橡胶阀座止回阀来"锁定"下游压力。
20. Direct simulation Monte Carlo (DSMC) method in combination with the variable soft sphere (VSS) model was used to simulate vacuum plume backflow of N2O4/MMH.
为准确获得双组元姿控发动机的羽流及其反流特性,采用直接模拟蒙特卡罗(DSMC)方法结合可变软球(VSS)模型数值模拟以N2O4/MMH为推进剂的真空羽流。
21. Check the state and local codes to insure that the backflow preventer is installed in compliance, such as the proper height above the ground.
了解州和当地规程，确保防回流阀的安装符合有关要求，如地面以上适当的高度。
22. Tricuspid regurgitation the backflow of blood from the right ventricle into the right atrium, owing to imperfect functioning (insufficiency) of the tricuspid valve.
什麽是'三尖瓣关闭不全-洩漏连接权心脏瓣膜上部和下部的心商会'?
23. It provides a effective way for removing reservoir damage and solving residual fluid backflow volume in low-pressure gas well acidizing.
介绍了泡沫酸的基本特点、增产机理、设计的基本原则与施工工艺技术,为低压气井酸化解除储层伤害和残液返排提供了行之有效的途径。
24. After removing the first check from the backflow valve body, place on a flat surface with the coil spring facing up.
从防回流阀阀体上拆卸第一止回阀后，要使螺旋弹簧面朝上放在平面上。
25. Allows for the installation of the backflow preventer "at the service connection" in accordance with AWWA Standards.
允许在“维修连接处”安装防回流阀,符合美国自来水厂协会的标准。
26. Sanhe”PVC shutter,antioxidant,light weight,open and close sweetly,prevent backflow of air.
免费发布公司名称：山东.县/区:潍坊.联系方法:山东省青州市经济开发区时代三路
27. All bronze ball valve and brass backflow preventer
全青铜球阀和黄铜防回流阀
28. REDUCED PRESSURE ZONE BACKFLOW PREVENTER For High Hazard Cross-connections and continuous pressure application.
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。
29. The deterioration process of inlet low pressure area caused by backflow on cavitations characteristics of inducer was analyzed.
分析了回流引起的进口低压区对诱导轮汽蚀性能恶化的过程；
30. By use of 3-D ultrasonic doppler velocimeter,the turbulence characteristics of water flow in the spur dike head and backflow region are observed and analyzed systematically.
利用三维超声学多普勒流速仪对丁坝坝头附近水流和回流区水流的紊动特性进行了系统的观测和分析,得到了丁坝坝头和回流区的水流特性及紊动动能的分布规律。
31. By utilizing the backflow of heat, the gold is mixing into Titanium shell, catalyzing its activity, and then modifying the characteristics of the ions.
利用热回流将黄金融入钛金属壳中，使其活性触媒化，并进行离子改质。
32. Single well backflow tracer test
单井示踪剂回流试验
33. The oversell backflow's fund may purchase the conductivity good finance product gain partial incomes.
卖空回流的资金可以购买流通性良好的金融产品获取部分收益。
34. During the testing and exploitation of fractured wells,backflow of proppant often occurs and badly stings the surface flow system.
压裂井在施工后期进行排液测试及采气过程中,常有支撑剂回流造成刺坏地面流程的情况发生。
35. Fracture reconstruction faced problems, including difficult demulsification of fracturing fluid, low backflow rate and poor effect.
压裂改造存在压裂液破胶难、液体返排率低、效果差等难点。
36. Double check valve backflow preventers with a water meter and double check in by pass line.
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。
37. The dual check backflow preventer shall meet the domestic requirements of ANSI/ASSE Standard 1024, and bear the seal of approval.
双止回防回流阀应该满足美国国家标准化组织(ANSI)和美国卫生工程师协会(ASSE)标准1024的室内应用要求，其密封应该获得认证。
38. DUAL CHECK VALVE BACKFLOW PREVENTER For low hazard cross-connections. Continuous pressure applications.
双止回防回流阀用于低危险交叉连接。持续压力应用场合。
39. Dual Check Valve Type Backflow Preventers
双重止回阀型防回流装置
40. The acute biological toxicity of residual chlorine and five organic chlorides against normal backflow activated sludge in a CHLOR-ALKALI factory was examined.
取某氯碱厂正常回流的活性污泥对余氯及五种有机氯化物进行急性生物毒性试验。
41. The relief valve may be serviced while on or off the backflow preventer valve.
可以在防回流阀上维修安全阀，或将其从防回流阀拆卸下来维修。
42. Can be temporarily removed for replacement of the backflow preventer without the need for replacement of freeze protection services.
可以暂时性拆卸,在不需要更换防冻装置的情况下,便于更换防回流阀。
43. Headstock piece on media flows and forces open or closed to prevent backflow valve media called a non-return valve.
启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的阀门叫止回阀。
44. Check state and local codes to insure that the backflow preventer is installed in compliance, such as the proper height above the ground.
咨询州和当地的有关规定，确保防回流阀的安装与有关规定相符，如地面以上适当的高度。
45. A check valve may be required ahead of the backflow preventer. *Please see "Troubleshooting", Page 7, prior to installation.
因此在防回流阀前可能需要一个止回阀。请在安装前参阅第7页“故障排除”。
46. In any fluid handling system, valves are the controlling element: starting or stopping flow, regulating or throttling flow, preventing backflow, or relieving and regulating pressure.
在任何流体处理系统中,阀门是作为控制装置:启动或停止流体流动,对流体进行调节或节流,防止倒流,或释放和调节压力。
47. After shutoff valves are closed, open test cock #2, #3 to relieve pressure within the backflow assembly.
在关闭了关闭阀后，开启测试旋塞2号，3号和4号，释放回流阀总成的压力。
48. After shutoff valves are closed, open test cock #2, #3 & #4 to relieve pressure within the backflow assembly.
在关闭阀关闭后，开启测试旋塞2号，3号和4号，释放防回流阀总成内部压力。
49. The 113-6RFP is equipped with manual reset to restore flow after the RPZ is repaired by the building maintenance engineer or backflow technician.
在减压区被建筑维护工程师或防倒流技术人员修好后，113-6RFP配置手动重新设置装置以恢复流量。
50. When installing a drain line, use Series 909 air gaps on Model 909 backflow preventers.
在安装排泄管线时,在型号909防回流阀上采用系列909气隙。
51. The 957 and 957RPDA backflow preventer should be tested by a certified tester at the time of installation.
在安装期间，957和957RPDA防回流阀应该由有资格证书的检验员进行检验。
52. The system should be flushed before the backflow valve is installed.
在安装防回流阀之前，系统应该进行冲洗。
53. Before connecting hoses to tester, be sure to flush test cocks on backflow assembly.
在将软管连接到检测器之前，请务必冲洗防回流总成上的测试旋塞。
54. Reduced Pressure Zone Assembly shall be installed at each cross-connection to prevent backsiphonage and backpressure backflow of hazardous materials into the potable water supply.
在每个交叉连接的地方应该安装减压区总成，以防止危险物质反虹吸或反压力回流到饮用水供应系统中。
55. Reduced Pressure Zone Assembly shall be installed at each potential health hazard location to prevent backsiphonage and/or backpressure backflow.
在每个具有潜在健康危害，需要防止反虹吸和/或反压力回流的地方应该安装一个减压区总成。
56. Reduced Pressure Zone Assembly shall be installed at each potential health hazard location to prevent backflow due to backsiphonage and/or backpressure.
在每个潜在健康危害的地方应该安装减压区总成，以防止由于反虹吸和/或反压力造成的回流。
57. Double Check Valve Assembly shall be installed at referenced cross-connections to prevent the backflow of polluted water into the potable water supply.
在相关的交叉连接处应该安装一个双止回阀总成，以防止受到污染的水回流到饮用水系统中。
58. A combination fill valve and backflow preventer shall be installed on the boiler feed line to provide make-up water to the boiler.
在锅炉进水管道上应该安装组合进水阀和防倒流阀，为锅炉提供补给水。
59. A strainer should be installed ahead of the backflow preventer to protect all internal components from unnecessary fouling.
在防回流阀前应该安装一个过滤器,以保护所有内部部件不会受到不必要的污染。
60. Copper tubing shall not be used on the downstream side of the backflow preventer.
在防回流阀的下游不应该安装铜管。
61. Model 994BLT Portable Hydrant Backflow Preventer meets the design requirements of most national standards. Due to the portability of the unit, there are no national approvals available.
型号994BLT移动式消防栓防回流阀满足大多数美国国家标准的设计要求。由于这种装置的移动性，所以目前没有可使用的美国国家认证。
62. Model994 BLT Portable Hydrant Backflow Preventer is designed and manufactured to provide long-term service with minimal maintenance.
型号994BLT移动式消防栓防回流阀的设计和制造理念就是为用户提供长期的使用寿命和最少的维护工作。
63. Model994 BLT Portable Hydrant Backflow Preventer is for use in protection of potable water from a fire hydrant or other nonpermanent installation where flow is in one direction only and the possibility of a cross-connection exists.
型号994BLT移动式消防栓防回流阀适用于保护饮用水系统不会受到消防栓或其他流向只是单向或存在交叉连接可能的临时性安装的应用场合。
64. When installing a drain line on Series 909 backflow preventers that are installed horizontally, use 909 AG series air gaps.
如果在水平安装的系列909防回流阀上安装排泄管,则需采用909AG系列气隙。
65. If installed on a fire sprinkler system, all mechanical checks, such as alarm checks and backflow preventers, should be flow tested and inspected internally in accordance with NFPA13 and NFPA25.
如果安装在防火喷淋系统上，所有机械式止回阀，如警告止回阀和防回流阀，都应该根据美国国家消防协会NFPA13和NFPA25标准进行流量测试和内部检查。
66. Another problem can occur rarely if backflow of process gas is permitted into the secondary air feed line.
如果工艺气体回流入二段空气管线，能发生另外的很少发生的问题。
67. If debris in the water system continues to cause fouling, a strainer can be installed upstream of the backflow assembly.
如果水系统内的堆积物继续产生污垢，则在回流阀总成的上游要安装一个过滤器。
68. For protection against backpressure backflow, install Watts 909/009 Reduced Pressure Zone Backflow Preventer.
如果要防止反压力回流，请安装美国瓦茨909/009减压区防回流阀。
69. If relief valve discharge due to a failure of the backflow preventer second check valve is a concern, a second Flood Protection - Shutdown Valve should be located immediately downstream of the backflow prevention assembly.
如果认为防回流阀的第二止回阀的故障导致安全阀排放现象应该得到处理，则应该在防回流阀总成下游立即安置第二堵漏-关闭阀。
70. Contact the factory for specific approvals on the reduced pressure backflow preventer.
如果需要特殊的减压防回流阀的认证，请与工厂联系。
71. Installed at the residential fire sprinkler service connection to the main, Series 07S Dual Check Backflow Preventers protect the water supply against polluted water being siphoned back from the sprinkler system.
安装在住宅消防喷淋头与主管道连接处，系列07S双止回防回流阀保护水供应系统不会受到从喷淋系统中虹吸回来的污染水的污染。
72. For protection against backpressure backflow, install Watts Series 909 or Series 009 reduced pressure principle backflow preventers.
对于反压力回流保护，需要安装美国瓦茨909系列或009系列减压原理防回流阀。
73. For flange size backflow preventers installed vertically (flow down), a fabricated air gap is recommended.
对于垂直安装的法兰通径防回流阀，则建议采用预制气隙。
74. The ideal solution for residential containment applications that require in-line testable and serviceable dual check backflow preventers.
对于要求在线可检测和可维修双止回防回流阀的住宅防污染应用,这是一个理想的解决方案。
75. a backflow of urine from the bladder into the ureter.
尿液从膀胱回流到输尿管。
76. The gate valve with the test cock is to mounted on the inlet side of the backflow preventer.
带有测试旋塞的闸阀安装在防回流阀的进口一侧。
77. The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.
带测试旋塞的关闭阀安装在防回流阀的进口一侧。
78. A strainer should be installed as shown, ahead of backflow preventer to prevent disc from unnecessary fouling.
应该如图安装过滤器，其位置位于防回流阀之前，以防止阀瓣不会受到不必要的污染。
79. A strainer should be installed as shown, ahead of backflow preventers to prevent discs from unnecessary fouling.
应该如图所示在防回流阀前安装一个过滤器，防止阀瓣出现不必要的污垢。
80. A strainer should be installed as shown, ahead of the backflow preventer to prevent discs from unnecessary fouling.
应该如图所示安装一个过滤器，安装位置位于防回流阀之前，以防止不必要的污染。
