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China, Chinese Rectangular Sight Glass for Pressure Vessels – Flat Sight Panel with Tempered Glass1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Pipe FittingsSight GlassRectangular Sight GlassIndustrial Sight Glass
Lumistar Special Glass Technology Co., Ltd.
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Product DescriptionCustomizable Rectangular Sight Glass, High Temperature Borosilicate Glass for Boiler/TanksTo meet the critical need for safe, reliable visual monitoring in high-pressure, high-temperature process vessels, Lumistar's Rectangular Sight Glass series (RSG/RSGR/RSGRR) delivers:Unclear or distorted view under extreme temperatures (>200 °C) and pressures (≤16 bar), risking misreads and process downtimeGlass breakage or leakage during rapid pressure cycling, causing safety hazards and costly maintenanceComplex installation, requiring multiple custom flanges or special welding procedures that extend lead timesLumistar SolutionsPremium Glass Options: Toughened borosilicate (to DIN 7081, up to 243 °C) or soda-lime silicate (to DIN 8903, up to 100 °C) ensure crystal-clear visibility and superior thermal shock resistance.Robust Frame Materials: Base and cover frames in RSt 37-2 carbon steel or AISI 316 Ti stainless steel (series-specific) provide corrosion resistance and structural integrity when welded directly into vessel walls.High-Integrity Sealing: Choice of KLINGERsil C4400, Neoprene, PTFE or Viton gaskets, plus high-strength M8 8.8 bolts (or stainless steel), guarantee leak-free performance under vacuum to 16 bar.Customizable & Ready-to-Weld: Standard lengths from 170 mm to 1000 mm, single- or multiple-unit configurations, reflex or clear glass plates, and optional closed base-frame for external level indication—delivered complete with pre-drilled flange holes for immediate welding.Certifications & Support: Optional DIN EN 10204 material certificates, factory-tested per relevant design codes, plus on-site installation guidance to ensure flat sealing surfaces and correct bolt-torque sequencing.With Lumistar's Rectangular Sight Glass, process engineers gain uninterrupted, safe observation of reactor internals, pipelines, silos, and storage tanks—reducing inspection time, minimizing unplanned shutdowns, and maximizing plant uptime. Contact us today to specify your exact size, glass type, gasket material, and certification requirements.Applications1.Chemical reaction equipment: Corrosion resistance and thermal shock resistance2.high pressure steam system: Strong pressure resistance and long-term stability3.Medical cleaning equipment: High cleanliness, low precipitation4.Oil pipeline monitoring: Resistance to impact and medium erosion5.Other industry sectorsKey ConfigurationsApplication: Rectangular Lumistar sightglasses of the series RSG /RSGR / RSGRR may be used to observe the interior of reactors, columns, silos, vessels, storage tanks andpipelines. They serve mainly as liquid level gauges, The are delivered ready to bewelded into or onto a vessel wall, complete with the appropriate seals, glass plates,and cover fastenings.Operating conditions: Nominal pressure 16 barVacuumNote: The nominal pressure indicated refers to the design base of thesightglass. When welded into the vessel concerned, the base frame becomespart of the vessel wall. lt is necessary, therefore, that appropriate strength calculations are made on all vessels concerned with respect to the design pressure and size of the vessel and in accordance with the relevant designcode. if found to be necessary, reinforcement of the vessel wall has to becarried out.Technical SpecificationsApplicationRectangular Lumistar sightglasses of the series RSG /RSGR / RSGRR may be used to observe the interior of reactors, columns, silos, vessels, storage tanks andpipelines. They serve mainly as liquid level gauges, The are delivered ready to bewelded into or onto a vessel wall, complete with the appropriate seals, glass plates,and cover fastenings.Operating conditionsNominal pressure 16 barVacuumNote: The nominal pressure indicated refers to the design base of thesightglass. When welded into the vessel concerned, the base frame becomespart of the vessel wall. lt is necessary, therefore, that appropriate strength calculations are made on all vessels concerned with respect to the design pressure and size of the vessel and in accordance with the relevant designcode. if found to be necessary, reinforcement of the vessel wall has to becarried out.Operating temperatures100℃ max. with sodium silicate glass to DlN 8903243℃max. with borosilicate glass to DlN 7081Note: The above indicated temperatures refer to the use of unprotected glass plates, with no protective mica sheets.Standard materialsBase frameRSt 37-2 or Hll (boiler plate) /AlSl 316 Ti stainless steelCover frameAs base frameGlass plateToughened sodium silicate glass to DIN 8903 (max. 100°C)Toughened borosilicate glass to DIN 7081 (max. 243 °C)GasketsKLINGERsil C4400/NeoprenePTFE/VitonCover fasteningsSteel, quality 8.8 /Stainless steelOther materials on request.CertificatesTo be supplied against extra charge to DIN EN 10204.Options- Version with closed base frame (drawing left) to be used as an external liquid levelgauge with top and bottom pipe connections, For this application, the base framewill be supplied appropriately drilled and tapped.-Radiused base frame to suit vessel wall-Clear(transparent)glass plateRemarksThe approval does not apply to the base flange as this is considered as part ofthe vessel wall after welding. Standard delivery includes a reflex (fluted) glass plate. Incircumstances where a clear (transparent) glass plate is required, this must be clearlystated at the time of enquiry.After welding into the vessel, the base frame should be checked to ensure thatthe sealing surface is flat and has not become distorted to avoid possible leakageunder pressure and /or breakage of the glass plate during tightening of the coverframe bolts. This process should be carried out in several steps and progressivelyalternating between each pair of opposite bolts from one end of the frame to the other!Tighten first little, then repeat the operation.Type designationSeries RSG:Base and cover frame in steel RSt 37-2Series RSGR:Base frame in AlSl 316 Ti and cover frame in RSt 37-2Series RSGRR:Base and cover frame in AlSl 316 TiOrdering example:1.piece rectangular siahtalass, base frame in AlSl 316 Ti, cover frame in RSt 37.2.length 350 mm, glass plate in sodium silicate glass to DiN 8903, fluted (Reflex).gasket product side PTFE, cover side Neoprene, cover fastenings 8.8 zinked:1 piece type RSGR-350,1.4571-PTFE-8903 R-Neoprene -RSt 37-2 -8.8 zink.We can customize according to customer needs.TypeSizeLengthANumberof unitsFreeview CGlass-lengthBBoltsWeight(kg)numberDRSGRSGRRSGRR17017011241408502.7RSGRSGRRSGRR250250120422010504.4RSGRSGRRSGRR300300126428014505RSGRSGRRSGRR350350130432016506RSGRSGRRSGRR400400135437018507RSGRSGRRSGRR50050022*2042*22020509.1TypeSizeLengthANumberof unitsFreeview CGlass-lengthBBoltsWeight(kg)numberDRSGRSGRRSGRR60060022*2642*280285010.5RSGRSGRRSGRR70070022*3042*320325012RSGRSGRRSGRR80080022*3542*370365014RSGRSGRRSGRR1000100044*2044*220405017Multi system certificationHaving over 10 invention patents More than 50 utility model patentsIndustry UsersCompany ProfileLumistar Special Glass Technology Co., Ltd.Lumistar Special Glass Technology Co., Ltd. is a national high-tech enterprise mainly engaged in the research and development, design, manufacturing, and processing of various types of ultra-high pressure glass windows and safety protection equipment, including high temperature and high pressure glass, ultra-high pressure glass tubes, ultra-high pressure glass mirrors, ultra-low temperature glass, oil well ultra-high pressure glass blasting discs, sapphire glass, microcrystalline ceramic glass, pipeline mirrors, pressure vessel mirrors, high vacuum observation windows, ultra-high pressure alkali resistant mica glass mirrors, high pressure level gauge aluminum silicon glass, explosion-proof spotlights, bulletproof and explosion-proof glass, sintered mirrors, bulletproof security posts, and bulletproof transparent materials.FAQQ: Do you have a factory?A: Yes, we have a factory in Jiangsu. Welcome to visit our company and factory. We are a professional manufacturer and provide OEM/ODM services to customers.Q: Could I get some samples, and how?A: No problem, we provide free samples, and it is only needed for you to pay for the shipping charge.Q: Can the company customize the specifications we want? A: Our company can customize various safety glass sight glasses with high temperature resistance, high pressure resistance, chemical resistance, and excellent thermal shock resistance according to customer needs, and issue EN10204-3.1 or 3.2 factory quality certificates, or according to customer needs Invite certification agencies such as TUV to come and witness the test.Our company can also provide OEM and ODM brands for users, making it convenient for agents from various countries to set up their own glass brands.Q: Can you give me some discount?A: Usually the discount depends on the quantity. However we can discuss it.Q: How do you deliver the qoods?A:We can choose suitable sea freight, air freight, and international express delivery according to the customer's needs, andselect the most economical and fastest logistics delivery method based on the actual situation of the goods
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