The design and lectotype of circulating pump, automatic return water switch valve, expansion tank and atmospheric connection pipe in atmospheric hot water heating boiler room are discussed.
对常压热水供热锅炉房的循环泵、回水自动启闭阀、膨胀水箱、大气连通管的设计选型进行了探讨。
This receiver requires an antenna and ground. The ground connection can be made to a water pipe (NOT a gas pipe!). The antenna can be a 50 foot length of wire stretched outdoors between two objects.
此接收机需要天线和地线，地线可以为金属水管(不能是煤气管)，天线可以是50英尺的线挂在两个物体上。
The sprayer pipe has the advantages of easy manufacture of water outlet, convenient connection and convenient operation.
这种喷灌管出水口易加工，连接方便，使用简便。
FRYS series heat-shrinkable sleeve products are designed for connection and sealing of ports of double-wall corrugated pipe for water discharge and supply of municipal engineering.
热缩系列产品，是为市政工程排水、给水用双壁波纹管端口连接密封而设计的。
Upper and under connection design which avoid water block, keep air smooth in the pipe, sure the pressure balance in the pipe, is good to improve drainage ability.
下部特殊管件设计，消除水舌、水塞、水壅等现象，保持立管内空气畅通，有效保证管道内的压力平衡，可大幅度提高系统的排水能力。
Cancel the copper pipe connection and water tank inside dish tube; completely eradicate the potential hazard of leakage, corrosion, incrustation, etc.
取消铜管连接和水箱内盘管，杜绝渗漏、腐蚀、水垢等隐患。
Upon the user's request, the unit may be installed with fast connection, suction pipe, water delivery pipe, instruments and other accessories.
根据用户要求，机组可配带快速接头、吸水管、输水管、仪表等附件。
Upon the user's request, the unit may be installed with fast connection, suction pipe, water delivery pipe, instruments and other accessories.
根据用户要求，机组可配带快速接头、吸水管、输水管、仪表等附件。
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