RARE FLAMEPROOF INDUSTRIAL PENDANT LIGHTSHEYES & COMPANY, WIGAN – CIRCA 1950FLP 4640 GRPS I & II / Chemical Plant ProvenanceA substantial and technically significant example of mid-century British flameproof industrial lighting, manufactured by Heyes & Company of Wigan circa 1950.Originally installed within a Scottish chemical mixing plant, these fittings were engineered for hazardous environments where the presence of volatile gases demanded fully enclosed, spark-proof illumination. The original specification plate remains intact, clearly marked:FLP 4640 GRPS I & IITemp Range Z – 200W GLS & 125W MBF/UThe heavy cast iron body, multi-bolt flameproof assembly and thick prismatic glass enclosure were designed to contain internal ignition and prevent external atmospheric ignition — a level of industrial over-engineering rarely seen in modern fittings.This is not decorative industrial styling — it is authentic hazardous-area engineering.FINISHThe original cast body has been professionally treated using our controlled oxidisation process.A reactive solution is applied to the existing metal surface, encouraging natural oxidation before being sealed to stabilise and protect the finish.The result is a deep, warm rusted patina that softens the otherwise imposing industrial mass — making the fitting highly suitable for high-end residential and hospitality interiors where authenticity is required without harshness.Also available in a highly polished finish upon request.DESIGN PRESENCEWith a 12kg weight and dense cast construction, this is a serious architectural light.Ideal for:Restaurant and bar environmentsDouble-height loft spacesIndustrial townhouse renovationsCommercial feature lightingArchitectural hospitality schemesThe scale and mass create visual gravity — particularly effective when installed in multiples.TECHNICAL SPECIFICATIONMAKERHeyes & CompanyORIGINWigan, EnglandERACirca 1950MODEL / CLASSIFICATIONFLP 4640Groups I & II (Flameproof Rated)CONSTRUCTIONHeavy cast iron bodyMulti-bolt flameproof assemblyThick prismatic glass enclosure (Braymat FLP marked)Original specification plate retainedTreated and sealed rusted finishDIMENSIONSHeight: 460mmDiameter: 240mmWeight: 12kgBULB HOLDERE27Maximum recommended: 12W LEDSUSPENSIONSupplied ready to hang.Includes matching chain and coordinating ceiling mount.WIRINGFully rewired and tested prior to dispatch.Wired to suit regional installation requirements (UK / EU / US).Sold ready for installation.INSTALLATIONDue to weight and mass, secure structural fixing is essential.Professional installation strongly recommended.CONDITIONExcellent structural condition.Original casting details crisp and well preserved.Glass enclosure retains original maker’s marks and industrial character.