Brass gate valves can be connected in the following ways:
Flange connection method, add a gasket between the two flanges, and then fastened with bolts.
Threaded connection method, Use the thread makes the valve two ends together to compassed of a combination of sealing strcture
Socket welding and bonding sandwich type(malleable cast iron) and other welding valves are generally used in the pipeline below pn40; the use of wafer type (malleable iron)welding must ensure that it is perpendicular to the axis of the pipeline.
The way of ferrule connection is the most used form, it is easy to install and it’s fast,firm and reliable.
Flat welding with neck steel gate valve installation and maintenance should pay attention to the following matters:
To check whether all components are intact before installation;
To check the packing part, it is required to be pressed into place and ensure that the packing room is dry and clean;
To ensure the tightness between various parts
Makes sure the valve stem is in a vertical position;
Regular inspection and maintenance. Gate valve is one of the commonly used block valve products . It has the characteristics of small size and light weight. It is widely used for the gas pipeline in petroleum industry system and flow regulating and cutting devices in water treatment systems.
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