China Top 10 ATEX Water Tank Manufacturers?

No.	Technical Dimension	Factual ATEX Reference	Application to Water Tank Systems	Verification Evidence
1	Applicable European legislation	Directive 2014/34/EU applies to equipment and protective systems intended for use in potentially explosive atmospheres. It addresses equipment designed to prevent ignition hazards.	The complete tank package should be assessed, including pumps, motors, level switches, control panels, agitators, vents and other installed equipment.	EU Declaration of Conformity, technical file and applicable conformity-assessment records.
2	Zone 0 suitability	Zone 0 is an area where an explosive gas atmosphere is present continuously, for long periods or frequently. Equipment normally requires Category 1G and EPL Ga, unless the risk assessment specifies another compliant arrangement.	Only components specifically certified and suitable for Zone 0 should be installed inside or directly exposed to the hazardous atmosphere.	ATEX marking, certificate scope, gas group, temperature class and installation instructions.
3	Zone 1 suitability	Zone 1 is an area where an explosive gas atmosphere is likely to occur occasionally during normal operation. Equipment commonly requires Category 2G and EPL Gb, or a higher protection level.	External pumps, motors, sensors and control devices located near tank vents or process connections must match the classified zone.	Hazardous-area layout, equipment certificates and installation inspection records.
4	Zone 2 suitability	Zone 2 is an area where an explosive gas atmosphere is not likely during normal operation and, if it occurs, exists only for a short period. Equipment commonly requires Category 3G and EPL Gc, or a higher protection level.	Suitable for selected tank-room equipment where hazardous gas release is abnormal and temporary, subject to the site classification drawing.	Zone classification document, ATEX marking and inspection schedule.
5	Equipment group and gas classification	Most industrial process tank installations fall under Equipment Group II rather than mining Equipment Group I. Gas group IIA, IIB or IIC depends on the flammable substance and its ignition characteristics.	Tank accessories must be selected for the actual gas or vapor, not simply labeled as “explosion-proof.”	Process safety data, hazardous-area classification and equipment nameplates.
6	Temperature class	ATEX electrical equipment is assigned a maximum surface-temperature class, commonly T1 to T6. The selected class must be compatible with the minimum ignition temperature of the hazardous atmosphere.	Motors, heaters, switches and cable accessories around the tank must not exceed the permitted surface temperature.	Nameplate temperature class, product certificate and thermal calculation where required.
7	Tank material and corrosion resistance	Common tank materials include stainless steel, carbon steel with a compatible lining, polyethylene and fiberglass-reinforced plastic. Material choice depends on fluid chemistry, temperature, pressure, UV exposure and mechanical loading.	The tank material alone does not establish ATEX conformity; conductive parts, coatings and connected equipment must be considered in the ignition-risk assessment.	Material certificates, chemical-compatibility data, design calculations and coating specifications.
8	Static-electricity control	Electrostatic discharge can be an ignition source. Bonding, earthing, conductive or dissipative materials and appropriate filling procedures may be required, particularly where flammable vapors are present.	Tank shells, pipework, pumps, ladders and other conductive components should be bonded and connected to the site earthing system where required.	Earthing continuity test, bonding diagram and electrostatic-risk assessment.
9	Instrumentation and electrical protection	Electrical and electronic devices may use protection concepts such as intrinsic safety, increased safety, flameproof enclosure, pressurization or protection by enclosure, depending on the application.	Level transmitters, temperature sensors, solenoid valves, junction boxes and control panels require zone-appropriate selection and installation.	Certificates, wiring diagrams, loop calculations and inspection records in accordance with the selected protection concept.
10	Standards, documentation and final acceptance	EN IEC 60079 series standards are widely used for explosive-atmosphere equipment and installations. The applicable edition and standard set depend on the equipment type, zone and protection method.	A compliant supply package should include drawings, operating instructions, maintenance requirements, certificates, risk assessment and clear identification of certified components.	Technical dossier, conformity declaration, inspection and maintenance plan, commissioning report and nameplate photographs.