2014年12月17日星期三

Adjustable mounting valve

Adjustable mounting valve

Adjustable mounting valve is the focus should be noted that the problem of installation quality directly related to the control valve into operation and performance. The installation process should pay attention to the following issues:

(1) Before installing the valve, the Propane Control Valve must be carefully remove the accumulated dust during storage, during the installation process should be kept clean. Because dust and impurities cause damage to the seat and inner parts. In order to protect clean, usually at the ends of the opening day is not welded flange is mounted on the cover.
(2) control valve installation, the arrow on the body should be consistent with the medium flow.
(3) control valve is precision components, if they are subjected to stress deformation pipeline would disrupt the normal work. Therefore, the vertical flange and pipe installation and the position should be accurate in order to avoid distortion of the pipe. Wells and pipelines to be properly supported to prevent it from happening in the weight of the valve bending.
(4) when the control valve and pipe welding must be especially careful. Note that if the valve and pipe welding was not able to eliminate stress, it will produce distortion. When soldering, welding slag must strictly avoid splashing into the valve, the presence of slag undermine the performance of thethermostatic valve, if splashing directly onto the spool, ranging from direct impact valve action, heavy damage to the valve and seat.
(5) when the pipeline pressure test and blowing, regulating valve should be removed, with the corresponding straight pipe connected to prevent welding slag, iron and other debris caught between the cutting valve and valve seat. Remove the valve opening flange ends of plastic sheeting wrapped securely application.

Regulating valve linkage test

After installing the control valve linkage test must be carried out before the device drive. Linkage test should focus on the following points:

(1) control valve linkage test must undergo a rigorous process piping before the purge and qualified, not qualified pipeline purge valve installation is prohibited because the residues within the pipeline such as welding slag, dust and other debris can damage the spool hard seat sealing surface.
(2) butterfly in front linkage should be checked at both ends of the valve with a pressure test or plugging should not blind plate.
(3) control valve with handwheel body, hand wheel mechanism should be in the "release" position. Check whether the air pressure of each valve regulating valve supply requirements.

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