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The above drawing shows DBB structure. It is of single piston and is sealed inlet end. The pressure can be automatically relieved for overpressure in the middle cavity, thus realizing the valve chamber and pipeline pressure balance. Besides, it has no installation direction requirement.
Gate valves are widely used in pipeline systems as a shut-off device. It can be divided into rising stem gate valves and non-rising stem gate valves, and what are the differences between these two types of gate valves?
Wedged Single Disc Gate Valve
Rubber O-ring is frequently used for the purpose of sealing in hydraulic and pneumatic system due to its simple structure, light weight, low cost, convenient installation and disassembly, and especially high sealing performance.
Check valves allow fluid to flow in only one direction and prevent backflows. They work automatically. The valve opens when fluid flows in one direction, leading to a higher inlet pressure, and it is closed when fluid flows in an opposite direction, resulting in a higher outlet pressure.
The spiral wound gasket has high compression and resilience performance, with multi-channel sealing and certain self-tightening function. It is less sensitive to surface defects on the flange pressing surface and does not adhere to the flange sealing surface, which can partially eliminate the inf...
Valve leakage occurs may due to the following five reasons: falling off of the disc, packing leakage, sealing surface leakage, leakage between body and bonnet, and leakage of sealing ring connection. For different reasons, respective measures can be taken.
In order to reach our reach our company culture as “Connect with quality ,trusted ,worldwide” and provide customer high-quality and better service, we have certified the ISO15848-1 qualification certificate
