In explosion-proof areas of petrochemical, pharmaceutical, and other industries, procurement personnel often face confusion when selecting heaters: how to balance explosion-proof compliance, corrosion resistance, and heating efficiency? The FBR-9 stainless steel explosion-proof heater is designed for such scenarios. The following provides selection reference from a comparative perspective.
Ordinary heaters pose an electric spark risk in flammable and explosive environments, and their stainless steel grade is mostly 304, with limited resistance to chloride ion corrosion. The FBR-9 uses a 316L stainless steel sheath, and its terminal enclosure complies with the Exd IIB T4 explosion-proof standard. The flameproof structure can withstand an internal explosion without igniting the external environment, making it suitable for Zone 1 and Zone 2 hazardous locations.
Cast aluminum heaters transfer heat quickly but have weaker corrosion resistance and are prone to oxidation when exposed to humid or weakly acidic/alkaline environments for long periods. The FBR-9 sheath surface undergoes passivation treatment, allowing it to adapt to media with pH 5-9, and its power density per unit area is controlled within 2.5W/cm² to avoid localized overheating that could cause medium coking.
Rated voltage: 220V/380V; Power range: 1-30kW; Protection rating: IP65; Explosion-proof marking: Exd IIB T4 Gb; Material: 316L stainless steel; Applicable temperature: ≤300℃; Installation method: flange or threaded fixing.
Suitable for heating water, oil, and acidic/alkaline solutions in explosion-proof areas, such as heat tracing of petroleum storage tanks, insulation of chemical reactors, and pharmaceutical purified water systems. When purchasing, it is necessary to provide the medium composition, explosion-proof rating requirements, and installation space dimensions to match the sheath length and power.
