对近年来在压力管道安装监督检验中发现的主要问题进行了讨论和分析。
In this paper, the principal problems that found in the process of supervision inspection for pressure pipeline installation were analyzed.
如果管道要联接到法兰上，必须以直线方向安装到法兰上，避免由于没有对准而对法兰产生压力。
Piping runs joined to the flanges must be installed in a straight line position to the flange to avoid stress at the flange due to misalignment.
如果存在一个压力回路，或者疏水阀排放口位于回路管道的上方，则应该安装一个止回阀(图b)。
A check valve should be installed on return piping if there will be a pressurized return line or the trap drains to an overhead return line (Fig. B).
在空气压缩机控制系统中，采用空压机后端出气管道上安装的压力传感器来控制空气压缩机的压力。
In the air compressor control systems, the air compressor vent pipe on the installation of pressure sensor to control the air compressor of pressure.
型号127压力调节阀可以与隔膜一起安装在管道上方或下方，也可安装在垂直管道上。
No. 127 May be installed with diaphragm above or below the line or in a vertical line.
介绍了适用于大屋面雨水排放的压力流雨水排水系统中雨水斗和管道的安装方法。
This essay also introduces some installation methods of rain cups and pipes suitable to the big house surface draining rain through pressure flow rain drainage system.
为了保持相同的热水和冷水压力，这个装置应该安装在整个室内住宅的供水管道上。
This should be placed on the supply to the entire house in order to maintain equal hot and cold water pressures.
它必须安装在公称压力不超过这个额定压力的管道系统中。
It must be installed in a piping system, where the normal pressure does not exceed this rating.
管道安装后进行压力试验时，施工验收规范要求要对管道上的膨胀节进行临时约束。
In accordance with construction acceptance specification, temporary restraint is to apply to the expansion joint on pipeline at pressure test after pipe installation.
压力管道制作与安装是一项综合性施工技术。
Penstock fabrication and installation is a comprehensive construction technology.
对现有止回阀的性能、结构进行了分析，设计了一种可以随意安装于各种方向的管道中的超低压力启动上回阀。
The performance and structure of existing back valve are introduced, and an ultra-low pressure startup back valve, which can be fixed freely in any pipes with any directions, is designed.
对现有止回阀的性能、结构进行了分析，设计了一种可以随意安装于各种方向的管道中的超低压力启动上回阀。
The performance and structure of existing back valve are introduced, and an ultra-low pressure startup back valve, which can be fixed freely in any pipes with any directions, is designed.
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