Repairs of professional hydraulic and pneumatic valves and servo valves
The repair team of professional hydraulic valves and servo valves, hydraulic valves (directional, professional and servo) in this collection, the restoration and repair of all types of hydraulic and pneumatic valves has been done during the years of this company’s activity. The specialized group of servo and poroportional valves by bringing together expert engineers in the fields of electricity and electronics, mechanics and mechatronics, calibration and test operators, reverse engineering and equipped with workshops and equipment such as: Proportional test and calibration stand, servo valve test and calibration stand, pressure breaker and directional valves test stand, ultrasonic washing machine, laser measuring equipment, stone axis machine, chrome work equipment, CNC turning machine, 3D scanning machine for industrial parts. be
We are proud to gradually update the required equipment according to the world’s valid standards (ISO4401) (ISO5598) (ISO5781) (ISO6263) in the shortest time, we provide the best repair services for professional valves and servo valves to our customers.
How is the test and calibration done?
The servo valve test stand and the proportional valve test stand can test valves from a flow rate of 1 liter to 150 liters per minute and a maximum of 450 working pressures at different working temperatures. Also, relevant tests according to the data sheet of the desired valve, including leakage test, pressure test, flow test, hysteresis test, vibration test, test in different temperature conditions, fatigue test and response time, valve opening threshold test. And passes the symmetry and linearity test to confirm its safe and perfect performance. And after that, the valve in the hydraulic system of the press is taken and tested again according to the simulated working conditions to ensure the accuracy of its operation.
Symmetry and linearity test
One of the most important tests of proportional valves and servo valves is the symmetry test and matching with the data sheet with the drawn diagram. The stand made by this company performs the professional valve test automatically with high accuracy and sensitivity with the ability to draw the diagram of the professional valve and servo valve and compare and obtain compatibility and non-compliance with the relevant data sheet.
Hysteresis test
This test is actually one of the most important and sensitive tests of advanced hydraulic valves.
First, we signal the proportional hydraulic valve from the bottom to the top. At the highest input signal (Command), we signal the desired valve to the lowest at a specified time. Flow chart and input signal (Command) are drawn at that specific time and compared with the data sheet of the hydraulic valve under test and the percentage of permissible error is determined.
Hysteresis test gives us a lot of help in troubleshooting and ensuring the performance of professional hydraulic valves.
Response time, valve opening threshold test
The performance speed of the professional valve is checked in different commands and according to the data and information of the valve manufacturer, it is matched and checked.
Internal leakage test of hydraulic valve Leakage Test
Usually hydraulic proportional valves and servo valves have internal leakage. This internal leakage, if it exceeds the permissible limit, will disrupt the operation of the hydraulic valve and also cause the fluid in the hydraulic system to heat up.
In Iranian Sepahan Hydraulic Company, having an advanced test stand, it is possible to measure the internal leakage automatically by a digital flowmeter in a period of 5 minutes with an accuracy of 10 cc per minute in order to ensure the accuracy of the internal leakage and its amount with the data sheet.
Proportional Valve - Servo Valve repairs from brands (Vickers) (Moog) (Schenck Pegasus) (Bosch/Rexroth) (Abex) (Atchley) (Atos) (Dyval) (MTS) (HR Textron) (Hydrolux) (Parker) & more.
Some of the industrial units that we had the honor to cooperate with in the field of professional repairs
Mubarake steel of Isfahan
Isfahan steel company
Hormozgan steel
Abadan Petrochemical and Oil
Saba steel
Hormozgan Steel Industries
Petropars Jam
Contact the specialists of the repair unit of professional and servo valves
The test equipment and test stands for professional valves and servo valves are located in Isfahan - Ashrafi Street, Esfahani. Please coordinate with us to request the repair and calibration of professional valves and servo valves or the repair of electronic boards and cards.
For direct contact with the professional valves repair unit of this collection, call the number below
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Iranian Sepahan Hydraulic Industries
(since 2014) by using the experiences of experienced experts and possessing technical knowledge in the field of designing, manufacturing and supplying all kinds of hydraulic and pneumatic systems, mechatronics and industrial automation. The services of this company include repairs and construction of all kinds of hydraulic, pneumatic, lubrication and greasing equipment and systems with all kinds of restrictions and working conditions. We are pleased that by cooperating with experts and research experiences, we have been able to make a great contribution in meeting the needs of the country’s industry and provide competent and competitive services in the global market. This company includes the following departments and units.
* Engineering and quality control technical unit
* Manufacturing unit
* Sales and trading unit (online sales)
* Repairs and after-sales service unit (specialized servo valve and professional valve repairs) repairs of all types of hydraulic and pneumatic equipment. .
