Electromagnetic Valve Inspection Service

Electromagnetic Valve Inspection Service – Accredited Performance, Safety and Durability Evaluation for Global Markets

Our internationally accredited laboratory delivers a specialist electromagnetic valve inspection service that provides manufacturers of solenoid valves, electro‑pneumatic actuators, hydraulic solenoid cartridges, process‑control valve assemblers, automotive fuel‑system and emission‑control suppliers, and industrial automation equipment builders worldwide with the independent, traceable data they need to verify the electrical integrity, the mechanical endurance, the sealing performance, the material compatibility and the long‑term reliability of their electromagnetic fluid‑control products. Every test is conducted under the rigorous framework of ISO/IEC 17025, and each report bearing the ILAC mark is unconditionally accepted by regulatory authorities, notified bodies and supply‑chain partners in all major economies. The electromagnetic valve inspection service subjects the complete valve assembly, the solenoid coil, the plunger, the spring, the diaphragm or the spool, and the body seals to a comprehensive suite of electrical, mechanical, thermal, chemical and environmental‑ageing evaluations, providing the legally robust, defensible engineering data that underpin product certification, functional‑safety compliance and the guarantee of the precise, the leak‑free and the energy‑efficient fluid control over the entire service life of the valve.

Product Samples We Regularly Inspect Under Our Electromagnetic Valve Inspection Service

The electrical‑safety analysers, the coil‑impedance testers, the dynamic‑response measurement rigs, the helium‑mass‑spectrometer leak detectors, the pressure‑cycling test benches, the environmental‑exposure chambers, the vibration shakers and the material‑characterisation instruments in our facility accommodate a broad variety of electromagnetic valve designs and their sub‑assemblies. The following categories represent the most frequently tested items:

Direct‑acting and pilot‑operated 2/2‑way and 3/2‑way solenoid valves – the normally‑closed and the normally‑open brass, stainless‑steel and plastic‑body valves that are used for the water, the air, the light‑oil and the neutral‑gas control in the domestic appliances, the irrigation, the vending and the compressed‑air systems
Hydraulic solenoid cartridge valves and the electro‑proportional spool valves – the screw‑in and the slip‑in cartridges, the CETOP‑mounted directional and the proportional‑pressure‑control valves that operate at the pressures up to 350 bar, evaluated for the hysteresis, the frequency‑response and the resistance to the hydraulic‑oil degradation
Automotive fuel‑injector solenoids, the evaporative‑emission purge valves and the transmission‑control solenoids – the high‑speed, the high‑temperature and the corrosive‑fuel‑resistant solenoid actuators that must meet the stringent automotive‑OEM endurance and the electromagnetic‑compatibility specifications
Medical‑grade and the analytical‑instrument micro‑solenoid valves – the miniature, the low‑power and the ultra‑clean solenoid valves that are used for the liquid‑and‑gas handling in the in‑vitro diagnostic, the respiratory‑therapy and the laboratory‑automation equipment, tested for the biocompatibility and the freedom from the extractable contaminants
Cryogenic and the high‑temperature solenoid valves – the stainless‑steel and the specialty‑alloy valves with the extended‑stem and the thermal‑isolation features that are designed for the liquefied‑natural‑gas, the liquid‑nitrogen, the superheated‑steam and the thermal‑oil services, evaluated for the seat‑leakage at the extreme temperatures
Solenoid‑valve sub‑components – the coils, the armatures, the springs, the diaphragms and the O‑rings – the individual parts that are submitted for the material‑identification, the hardness, the fatigue‑testing and the compatibility with the specific process‑fluids
Prototype, field‑returned and the accelerated‑life‑tested electromagnetic valve specimens – the valves that have undergone the thermal‑cycling, the pressure‑pulsation, the chemical‑exposure or the in‑service failure, submitted for the residual‑performance, the wear‑analysis and the root‑cause diagnosis

Electrical Integrity, Coil Performance and Thermal Behaviour – Electromagnetic Valve Inspection According to IEC 60335‑1, UL 429 and the Internal Protocols

Measurement of the coil DC‑resistance, the inductance and the impedance, and the determination of the nominal power‑consumption and the inrush‑current profile according to the internal validated protocol and the principles of the IEC 60335‑1 (Household and similar electrical appliances – Safety) and the UL 429 (Standard for Electrically Operated Valves): the coil is energised at the rated and the extreme‑voltage limits, and the steady‑state and the transient electrical parameters are recorded, providing the fundamental data that the control‑system designer uses to select the correct driver‑circuit and to guarantee the reliable valve operation within the specified supply‑voltage tolerance. This electromagnetic valve inspection service verifies that the coil meets the declared electrical specification and the insulation class.
Insulation‑resistance and the dielectric‑voltage‑withstand testing according to the IEC 60335‑1, the IEC 60947‑1 and the UL 429: the valve is conditioned in a humidity chamber, and the insulation resistance between the coil‑terminals and the valve body is measured with a mega‑ohmmeter. A high‑potential test at the prescribed voltage – typically 1 500 V AC or 2 × the rated voltage plus 1 000 V – is then applied, and the absence of the breakdown or the flashover is confirmed, certifying the electrical safety of the valve for the intended installation category.
Temperature‑rise and the coil‑overheating evaluation under the continuous‑energisation and the hot‑soak conditions according to the internal validated protocol: the valve is operated at the maximum rated ambient temperature and the rated voltage, and the temperature of the coil‑winding, the external housing and the seal‑materials is measured by the thermocouples and the thermal‑imaging camera, ensuring that the temperature remains below the limit of the insulation class – the Class F (155 °C), the Class H (180 °C) or the Class N (200 °C) – and that the seal‑integrity is not compromised by the thermal degradation.
Voltage‑range and the pull‑in/drop‑out characteristic determination according to the internal validated protocol: the coil‑voltage is varied, and the minimum pull‑in voltage that causes the valve to actuate, and the maximum drop‑out voltage at which the valve returns to its de‑energised position, are measured, providing the data that the automation‑engineer uses to ensure the correct switching function under the low‑supply‑voltage and the cable‑voltage‑drop conditions.
Electromagnetic‑compatibility – the conducted‑and‑radiated emission and the immunity testing according to the EN 55014‑1 (Electromagnetic compatibility – Requirements for household appliances, electric tools and similar apparatus – Part 1: Emission) and the EN 55014‑2 (Immunity), and the IEC 61000‑4 series: the valve is operated with its intended driver, and the electromagnetic‑disturbance emission is measured; the valve is also subjected to the electrostatic‑discharge, the radiated‑radio‑frequency, the electrical‑fast‑transient and the surge‑immunity tests, ensuring the compliance with the EMC Directive and the reliable operation in the industrial and the automotive environments.

Mechanical Endurance, Functional Cycling and Dynamic Response – Electromagnetic Valve Inspection According to ISO 12238, ISO 6358 and the Customer Specifications

Cycle‑endurance and the accelerated‑life testing under the rated pressure and the temperature according to the internal validated protocol and the principles of the ISO 12238 (Pneumatic fluid power – Directional control valves – Measurement of shifting time) and the ISO 6358 (Pneumatic fluid power – Determination of flow‑rate characteristics of components using compressible fluids): the valve is subjected to the repeated open‑close cycling – typically 1 million, 10 million or 50 million cycles – and the shift‑time, the seal‑leakage, the coil‑resistance and the spring‑force are monitored at the intervals, providing the durability‑life data that the manufacturer uses to set the warranty period and the recommended service interval. This electromagnetic valve inspection service is the primary reliability‑qualification test for every new valve design.
Measurement of the opening and the closing response‑time, the bounce‑time and the dynamic‑flow characteristic according to the internal validated protocol and the ISO 12238: the valve is instrumented with a high‑speed pressure‑sensor and a flow‑meter, and the time‑delay between the electrical‑command and the full‑flow delivery, and the duration of the contact‑bounce and the pressure‑surge, are recorded, providing the data that the control‑engineer uses to design the precise pneumatic and the hydraulic servo‑systems.
Internal‑and‑external leak‑tightness testing according to the ISO 5208 (Industrial valves – Pressure testing of metallic valves) and the internal procedures: the valve is pressurised with the air, the helium or the test‑liquid at the rated and the 1.1‑times rated pressure, and the leakage across the seat and the external stem‑or‑body seals is measured by the bubble‑emission, the pressure‑decay or the helium‑mass‑spectrometer method, certifying the valve for the tight‑shut‑off and the fugitive‑emission applications.
Minimum‑operating‑pressure and the differential‑pressure testing according to the internal validated protocol: the valve is operated at the progressively reduced inlet‑pressure, and the minimum pressure at which the valve can still fully open and close is measured, providing the data that the system‑designer uses to guarantee the reliable operation under the low‑supply‑pressure and the gravity‑fed conditions.
Vibration and the mechanical‑shock resistance according to the IEC 60068‑2‑6 (Vibration – sinusoidal) and the IEC 60068‑2‑27 (Shock): the valve is mounted on a shaker table and subjected to the vibration and the acceleration profiles that represent the transportation, the engine‑bay and the industrial‑machinery environments, and the post‑mechanical‑stress functional integrity and the leak‑tightness are verified.

Pressure Integrity, Burst Strength and Fluid Compatibility – Electromagnetic Valve Inspection According to ISO 5208, ASME B16.34 and ISO 175

Hydrostatic shell‑and‑body proof‑pressure and the burst‑pressure testing according to the ISO 5208 and the ASME B16.34 (Valves – Flanged, Threaded and Welding End): the valve body and the bonnet are filled with the water and pressurised to 1.5 times the maximum allowable working pressure, and the pressure‑decay and the visual inspection for the weeping and the permanent deformation are performed; the burst‑pressure is then determined by the continued pressurisation, providing the ultimate safety‑factor data. This electromagnetic valve inspection service is mandatory for the CE marking under the Pressure Equipment Directive.
Resistance to the chemical agents – the acids, the alkalis, the solvents, the fuels and the lubricating‑oils – according to the ISO 175 (Plastics – Methods of test for the determination of the effects of immersion in liquid chemicals) and the ASTM D543: the valve‑body materials, the elastomeric seals and the thermoplastic diaphragms are immersed in the representative process‑fluids at the maximum service temperature, and the change in the mass, the dimensions, the tensile properties, the hardness and the appearance is reported, certifying the long‑term chemical compatibility and the absence of the swelling or the embrittlement that could cause the valve malfunction.
Resistance to the oxygen‑ageing, the ozonated‑water and the chlorine‑based sanitisation according to the internal validated protocols: the valve components are exposed to the aggressive oxidising media that are used in the potable‑water treatment, the food‑processing and the medical‑device cleaning, and the post‑exposure functional performance and the seal‑integrity are evaluated, ensuring the suitability for the hygienic and the high‑purity applications.
Compatibility with the refrigerant‑oils and the low‑global‑warming‑potential refrigerants for the HVAC and the heat‑pump solenoid valves: the valve is tested with the R‑32, the R‑454B, the R‑290 (propane) and the corresponding lubricants, and the swelling of the seals, the change in the seat‑leakage and the electrical‑insulation resistance are measured, providing the data for the compliance with the A2L and the A3 refrigerant safety standards.

Environmental, Thermal and Ingress‑Protection Testing – Electromagnetic Valve Inspection According to IEC 60068‑2, ISO 9227 and IEC 60529

Thermal‑cycling, the thermal‑shock and the damp‑heat endurance according to the IEC 60068‑2‑14 (Change of temperature) and the IEC 60068‑2‑78 (Damp heat, steady state): the valve is cycled between the minimum and the maximum rated storage and the operating temperatures, and is exposed to the condensing‑humidity atmosphere, and the post‑exposure electrical insulation, the shift‑performance and the visual integrity are evaluated, providing the data that the designer uses to guarantee the reliable operation in the outdoor, the tropical and the cold‑climate installations.
Neutral salt‑spray and the cyclic‑corrosion testing according to the ISO 9227 (Salt spray tests) and the ASTM B117: the valve, with its protective coating or the electro‑plating, is exposed to a continuous or a cyclic salt‑fog environment, and the degree of the red‑rust, the blistering and the under‑film‑corrosion creep are assessed, certifying the valve for the coastal, the offshore and the road‑vehicle applications. This electromagnetic valve inspection service also includes the mixed‑flowing‑gas test for the electronic‑component corrosion according to the ASTM B845.
Ingress‑protection (IP) rating verification according to the IEC 60529 (Degrees of protection provided by enclosures – IP Code) and the ISO 20653 (Road vehicles – Degrees of protection): the valve, including its electrical‑connection and the manual‑override, is tested for the dust‑ingress and the water‑jet or the immersion protection, and the IP classification – such as the IP65, the IP67 or the IP6K9K – is certified, which is essential for the valves that are installed in the exposed and the wash‑down environments.
Resistance to the ultraviolet radiation and the accelerated weathering according to the ASTM G154 (Standard Practice for Operating Fluorescent Ultraviolet Lamp Apparatus for Exposure of Non‑Metallic Materials) and the ISO 4892‑2: the plastic‑body and the polymer‑coated valves are exposed to a cycle of the UV‑A or the UV‑B radiation, the heat and the condensation, and the colour‑change, the surface‑cracking and the retained mechanical strength are evaluated, predicting the outdoor‑storage and the exposed‑service life of the valve.

Report Acceptance and Global Regulatory Compliance

All measurements performed within our electromagnetic valve inspection service are executed under the fully accredited scope of our ISO/IEC 17025 quality management system. Each test report that carries the ILAC mark is therefore automatically recognised by regulatory authorities, notified bodies, customs offices and supply‑chain partners in all major economies. For solenoid‑valve manufacturers, industrial‑automation and process‑control integrators, automotive fuel‑system and emission‑control suppliers, and hydraulic‑cartridge valve producers anywhere in the world, the report constitutes legally robust, internationally accepted evidence that the electrical integrity, the functional endurance, the pressure‑containing capacity, the chemical compatibility, the environmental durability and the electromagnetic compatibility of the electromagnetic valve have been determined in accordance with the applicable IEC, ISO, ASTM, UL and customer‑specified methods. The documentation can be directly used to support the CE marking under the Low Voltage Directive, the Pressure Equipment Directive or the Machinery Directive, the UL listing, the issue of inspection certificates according to EN 10204 or equivalent national standards, and the resolution of commercial and technical disputes concerning the safety, the reliability and the long‑term performance of any electromagnetic fluid‑control valve.