VISTA TECH

Natural gas is usually highly pressurized as it travels through transport pipelines. But once it reaches the consumers, it needs to be brought up to the contractual specifications for delivery. This often means that solids and liquids have to be filtered out, the pressure has to be reduced, and the gas may need to be preheated to counteract the cooling effect of the pressure reduction. And last but not least, the downstream consumers need to be protected from being exposed to the full transport pipeline pressure.

The aim of a pressure reducing skid is to regulate the natural gas outlet pressure to a setting value. One typical solution consists mainly of two reducing streams (2x100% capacity) with two regulators each: one is the main regulator and the other is used as a monitor/slam shut valve. Active and monitor pressure regulator.The active regulator normally assures pressure reduction to the setting value.To assure gas supply continuity in case of failure of the active regulator a second regulator (monitor) is installed in series. The monitor regulator is normally wide open. In the event of an accidental increase of outlet pressure, the monitor regulator will take over as control valve. During the normal operation, depending from the service, one line is working while the other line is in stand-by. Only in case of a failure of the monitor and main regulator, the standby line starts to work. An overpressure slam shut device, in the event the outlet pressure exceeds an acceptable value, protects the equipment downstream of the pressure regulators from over-pressure.

To minimize accidental intervention of the slam-shut device, a spring-loaded pressure relief valve is installed and designed to release relatively small quantities of gas only.

In facilities encompassing together with a skilled team of professionals, VISTA TECH Engineering Co. currently manufactures natural gas pressure reducing and metering stations, in cabinet and flat types with capacities ranging from 100 scmh to 1000,000 scmh in different pressures and flows, these stations serve transmission and distribution, industrial, residential, and power plant projects.

Due to its huge stocks, VISTA TECH is capable of manufacturing stations according to requested capacities, in the shortest possible time frame

VISTATECH cabinet and flat type gas pressure reducing and metering stations to be  designed and manufactured by using 3D modeling softwares  in order to embedding all devices and equipment in correct situations and predicts any clash each other.

Also the cabinet and skid of pressure reducing systems to be stress analyzed and all ambient parameters such as wind and seismic effects will be considered in design and calculation progress. The  system will be designed according to the parameters requirements established in the bidding guidelines, and in accordance with the latest editions of the international and local governing  codes and standards issued by the following entities.