在建筑物供暖系统中,闸阀和截止阀的应用相当普遍,由于闸阀流动阻力比截止阀小得多,因此在设计和施工中,不可将两者互换,以免造成供暖系统阻力不平衡。以水平串联系统为例,按每个水平支路供回水端各设一个阀门和总供回水管各设一个阀门,这种阀门设置最少的系统来计算比较。原设计为闸阀,如果换成截 In the building heating system, the gate valve and the valve is quite common, because the gate valve flow resistance is much smaller than the shut-off valve, so in the design and construction, the two can not be exchanged to avoid heating system imbalance. To horizontal series system, for example, according to each horizontal branch back to the water supply side of each set a valve and the total supply pipe for each set a valve, this valve set the least system to calculate the comparison. The original design for the valve, if replaced by cut