Valves are inspected and tested by the manufacturer to ensure that they conform to the required valve leakage standards. Valve leakage is tested using either a hydrostatic test (i.e., the test medium is a liquid, such as water or kerosene) or a pneumatic test (the test medium is a gas, such as air or nitrogen.
chemical analysis, the study of the chemical composition and structure of substances. More broadly, it may be considered the corpus of all techniques whereby any exact chemical information is obtained.
Ball valves can suffer from abrasion by sand or stone chippings present in fluids and from erosion by accelerating flow when the valve is being closed/opened. Hardide CVD coatings make valve parts scratch-proof and capable of resisting abrasion and erosion. The coating is extremely effective in protecting ball valves from abrasion, erosion from flow acceleration and corrosive chemicals. The binder-free coating gives consistent coating thickness and reduces assembly costs. No matching of seats to valve bodies is required and the coating can be applied easily to internal surfaces and complex shapes enabling greater design flexibility. The smooth and uniform ‘as coated’ finish streamlines finishing operations which are carried out in-house giving faster turnaround times, improved quality control and traceability.
Cryogenic testing. To enhance and support our high standards of valve design and production we operate stringent cryogenic testing programmed through our in-house facility. These tests include leakage, torques, and cycling under typical cryogenic conditions.
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FUGITIVE EMISSION TESTING
Fugitive emissions are emissions of gases or vapors from pressurized equipment due to leaks and other unintended or irregular releases of gases, mostly from industrial activities.
HELIUM LEAKAGE TEST
It is used to locate and measure the size of leaks into or out of a system or containing device. The tracer gas, helium, is introduced to a test part that is connected to the leak detector. The helium leaking through the test part enters through the system and this partial pressure is measured and the results are displayed on a meter.
LOW TEMPERATURE TREATMENT
This specification covers stainless steel castings for valves, fittings, flanges and other pressure-containing parts for low temperature service and the quality required for assembly with other castings or wrought steel parts by fusion welding. These grades are all “cast” grades, meaning they are made through “casting”, a manufacturing process where a liquid material is poured into a mold and allowed to harden. Cast valves are typically less expensive than their forged counterparts for larger bore valves – though as a result of the casting process the potential for a porous cast (bad casting) is why most high pressure valves are made with forged steel.
Shock testing replicates events to determine if structures can withstand sudden applied forces. Shocks are characterized by their short duration and sudden occurrence. We provide end-to-end shock testing services complete. The shock test system is also used for a variety of other tasks including shock transmission testing on isolators and damping material research. We regularly test shock isolators to prove their durability and demonstrate isolation performance at high levels. One research application involves examining the stress and strain behavior of structural or damping materials at high strain.
Tensile Test is a fundamental material science and engineering test in which a sample is subjected to a controlled tension until failure. Properties that are directly measured via a tensile test are ultimate tensile test, breaking strength, maximum elongation and reduction in area.
Torque testing is accomplished by inserting a torque transducer between the tool applying the force and the item against which the force is being applied. A torque tester is also used as a quality control device to test or calibrate torque controlled tools.
SHELL TAT TESTING
TAT is done as per ‘Shell’ specification 77-300 in which valve is subjected to seat test, fugitive emission test and torque test under pressure, during and after mechanical and thermal cycling.
Our full line of hydrostatic testing systems perform both hydrostatic and pneumatic testing on Flanged Valves, Socket Weld Valves, Butt Welded Valves, Female Threaded Valves and Special Ended Valves. Our systems have been designed to test Gate, Globe, Check, Plug, Ball, Needle, Butterfly, Control, Safety Relief Valves and special valves, fittings and pipe. We work collaboratively with our customers, applying the latest product design and systems on the market today to address specific industry valve testing requirements.