Farayand Gostar Nisa Company provides services on PSV sizing in accordance with standards of oil, gas and petrochemical industries (API 520/521, ASME Sec. VIII) by using an experienced engineering team and a systematic approach. In this process, operational conditions are accurately analysed at the first, including critical flow rate, setpoint pressure, fluid properties and discharge conditions. Then, by considering safety factors, hydrodynamic stability and industry requirements, sizing calculation is carried out to prevent incorrect selection such as over-sizing or under-sizing.
The engineers in Farayand Gostar Nisa conduct the calculations very carefully and in accordance with the latest global standards by developing special PSV sizing software of this company. This software is able to select the most optimal valve size with multi-layer validation capability by considering dynamic parameters of fluids (compressibility, viscosity and two-phase flow) and environmental conditions of discharge.
The first crucial step in the process of PSV sizing is to exactly identify the reason for need of safety valve in system. Our engineering team identify the source of danger by analysing probable scenarios such as sudden pressure increases (Overpressure) resulted from process disturbances, fire cases (Fire case) as per API 521 standard, mechanical equipment failure (such as pump or compressor failures) and changes in fluid phase (Flash Scenario); they exactly determine that the PSV design requirements to prevent against which scenario. This analysis is a base for selecting set pressure, type of valve (conventional, balance bellows or pilot-operated) and even material selection.
After completing calculations, engineering datasheets including technical specifications such as set pressure, capacity, orifice size and material specs, are prepared together with executive plans in accordance with API/ASME standards and are sent to the client to be reviewed. These documentations are designed in a way to cover all operational and safety requirements of the project.
When the technical specifications are verified by the client, by relying on years of cooperation with global prestigious brands such as Leser, Crosby and Baker Hughes, and the extensive international supply network, the optimized price is offered by considering the following factors:
Quality and 100-percent conformity with the certified technical specifications
Competitive delivery time
Valuable guarantee and after-sale services
This approach ensures that your project is implemented at the most possible economical cost by maintaining the highest quality standards.
In Farayand Gostar Nisa Company, we proudly announce that we have one of the most experienced teams specialized in designing, sizing, supplying and calibration of PSV. The combination of today’s knowledge, operational experience and commitment to quality, has made us to a trustable partner for industrial projects.
In 2023, Farayand Gostar Nisa Company was founded to develop oil and gas industry. The company transfers technology and supplies control valves by gathering experts and collaborating with global manufacturers. Accurate design, proper selection and testing of products are in accordance with standards. High-qualified products are guaranteed by the experienced professional commercial and assembly team.
