原文：
　1、锅炉（或冷水机组）水流量平衡 　　在锅炉房（或冷水机房）中，一般并联安装几台机组，由于各机组之间具有不同的阻力，引起通过各机组的流量不一致，使机组不能发挥装机的{zd0}出力。此时应在每台锅炉（或冷水机组）处安装平衡阀，使每台机组都能获得设计流量，保证每台机组安全、正常运行。冷水机组连接多台冷却塔时，每台冷却塔也应安装平衡阀. 　　2、热力站的一、二次环路水流量平衡 　　在热电站或集中锅炉房向若干热力站供热水的系统中，为使各热力站获得要求的水流量，宜在各热力站的一次环路侧回水管上安装平衡阀。为保证各二次环路水流量为设计流量，热力站的各二次环路侧也应安装平衡阀。 　　3、小区供热管网水流量平衡 　　小区供热水管网往往由一个锅炉房（或热力站）向若干幢建筑供热。由总管、若干条干管以及各干管上与建筑入口相连的支管组成。由于每幢建筑距热源远近不同，如果缺乏有效设备来xx近环路剩余压头，将使流量分配不符合设计要求，近端过热，远端过冷。应在每条干管及每幢建筑的入口安装平衡阀，保证小区中各干管及各幢建筑间流量的平衡。 　　4、建筑物内供热（冷）管网水流量平衡 　　对于要求较高的供热（冷）管网系统，需要保证所有的立管（甚至支管）达到设计流量，这时在总管、干管和立管（及支管）上都要安装平衡阀。

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译文：
1 boiler (or chiller) water flow balance In the boiler room (or cold room), the general parallel installation of several units, as between the various units have different resistance, causing the flow through the unit is inconsistent, so that units can not be installed to play the best output. At this point should be on each boiler (or chiller) to install balance valve, so that access to the design flow per unit, each unit to ensure safe and normal operation. Connect multiple chiller cooling tower, cooling tower should be installed on each balancing valve. 2, thermal stations, primary and secondary loop water flow balance Concentration in the thermal power station or boiler room on heat water to a number of systems, in order to obtain the required heat station water flow, should the thermal station in a loop back to the mains side of balancing valves installed. To ensure that the second loop of water flow for the design flow, thermal station of the second loop side of the balancing valve should be installed. 3, district heating pipe water flow balance District heating pipe network often consists of a boiler room (or heat station) to the number of blocks of building heat. From the mains, trunk mains, and several articles on the trunk and branch building entrance connected to the composition. Distance from the heat as each building is different from the absence of an effective device to eliminate the residual pressure head near Circle, will flow distribution does not meet design requirements, the proximal hot, remote cold. Should be in each trunk and each building's entrance installation of balancing valve, ensure that communities in the trunk and the building blocks of the balance between the flows. 4, the building heat (cold) water flow balance pipe To require a higher heating (cooling) systems, and need to ensure that all risers (or branch) to meet the design flow, when the mains, trunk mains and risers (and branch) to be installed on the balancing valve.