In some sensitive industries such as oil, gas, and petrochemistry, it is very significant to select an exact control valve (Control Valve Sizing) for system function. Optimized sizing according to ISA-75, IEC 60534 and ANSI/FCI 70-2 standards not only increases accuracy in process control but also, prevents waste of resources and extends the equipment life by optimizing energy consumption in accordance with ISO 5208 standard. By relying on the experienced engineering team and the company-specific developed software, in Farayand Gostar Nisa Company, the sizing calculations are conducted by considering all vital parameters and requirements of update industry standards to guarantee the best possible function for your production line.
Selecting a proper actuator (Pneumatic, Electrical or Hydraulic) is as important as the process of control valve sizing. An actuator with precise technical specifications and coordinated with control valve, significantly increases the accuracy in function, response speed and system life. In Farayand Gostar Nisa Company, an actuator is recommended which has the best function together with control valve by considering some factors as follows:
The required torque (based on valve size and type)
Speed of function (in accordance with the process need)
Environmental conditions (temperature, pressure and type of fluid)
Safety standards (in accordance with SIL, ATEX or IEC 61508, if necessary)
In this company, we have achieved some tangible results through dynamic simulation and simultaneous optimization of valve and actuator sizing which effect on Cv (flow coefficient) and overall system function directly:
Accurate calculation of Cv to achieve an ideal flow rate without wasting energyر
Decreasing overshoot to less than 5% by precisely adjusting the control parameters
Improving repeatability up to 5% for a long-term stable function
Achieving optimal rangeability within the effective valve opening range of 20% to 80%
Optimization of response timing and dead band for higher sensitivity
The technical documents shall be prepared in this company in accordance with the client’s need after completing the process of control valve sizing and actuator selection.
Engineering datasheets including complete technical specifications of the equipment
Executive plans in accordance with execution standards
Customized documents in proportionate to the exact needs of the project
Reporting sizing calculations for the client’s review
Instructions for installation and setup
Listing spare parts with unique manufacturer ID codes
Certificates for standard and calibration relevant to materials and equipment function
All the documents shall be checked by the quality control team of this company before delivering.
This company has made strategic relations with the best global control valve manufacturers by continuous presence in prestigious international exhibitions of oil, gas and petrochemical industry and years of technical interaction. Theses relations which made through the joint technical and commercial collaborations, bring unique benefits to our customers:
Having accessibility to the newest technologies in the world regarding industrial
Having capability to customize equipment according to the special needs of the project
Having direct technical support of manufacturing plant engineers
Gaining prestigious international certificates
By understanding economic conditions in Iran and challenges in industry, we always try to:
Offer completely competitive prices while maintaining quality.
Have flexibility in payment modes in proportionate to the project conditions.
Offer special discounts for long-term cooperations.
Offer special discounts for long-term cooperations.
We believe:
providing the best possible product against your payment is the basis of trust and stable collaboration.
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.
