Retractable flange butterfly valve installation and use of precautions
May 21 11:28:04, 2021
Telescopic flange butterfly valve temperature ≤ 80 ℃, used in petroleum, chemical and pharmaceutical medicine textile, papermaking, electricity, water supply and drainage, gas pipeline, for regulating the role of flow and interception of the media, with compensating pipe thermal expansion and contraction functions. 1, Innovative design, reasonable, unique structure, light weight, easy to operate, quick closing. Telescopic flange butterfly valve installation and use matters needing attention 1, Telescopic flange butterfly valve must be placed flat before installation, do not bump; 2, Retractable flange butterfly valve factory structure length is the minimum length, installation, pull to the installation length Length); 3, when the pipe length exceeds the telescopic valve installation length, please adjust the pipe interval, do not pull the telescopic valve forcibly, so as not to damage the telescopic valve; 4, telescopic flange butterfly valve butterfly valve can be installed in any position, do temperature compensation When the pipe is installed, it is necessary to add brackets along both sides of the pipe axis to prevent the telescopic pipe from being pulled out (see Figure 1). The support force of the brackets is calculated by the following formula. Do not remove the brackets during operation. : PS a pipe test pressure, DN a pipe diameter 5, telescopic flange butterfly valve temperature compensation at the same time, only installation and replacement, maintenance of the valve easy to use, the bolt can be used to limit the symmetrical clamping telescopic flange butterfly valve to prevent the telescopic tube Pull out (see Figure 2), damage telescopic butterfly valve and pipe fittings or buildings. Bolt diameter according to the flange bolt diameter, the bolt strength and withstand test pressure and pipe tension, calculated according to the formula above, the operation of the limit bolt is prohibited to remove (bolt reprovision); 6, pipe construction site is strictly prohibited to disassemble and disassemble telescoping Flange butterfly valve; 7, the retractable flange butterfly valve, fine processing, with tight, do not repeatedly stretch shortening retractable butterfly valve at the scene. Pipe installation, the telescopic valve on both ends of the pipeline must be concentric, the pipe flange on the two parallel; 8, the flange bolts should be symmetrical fastening, do not forcibly fasten the flange bolts; 9, telescopic tube After installed in the valve; 10, retractable telescopic valve shall not be installed at the corner of the pipe or pipe ends. More Keywords Search: Butterfly valve
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