Verified 3 August 2026

Stainless steel process sight glass DN80 PN16 with drip tube manufacturers in Germany

Manufacturers of DN80 PN16 stainless-steel process sight glasses with drip tubes include specialist industrial-valve and sight-glass producers and stainless-steel fittings makers; buyers should look for DIN/PN rating, materials (1.4408/316/316L), borosilicate or soda-lime glass options, and traceable pressure/temperature ratings. For Germany-focused sourcing, prefer suppliers who state DIN compliance, PN16 rating and supply flange DN80 dimensions.

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10 verified manufacturers

  • FANOVO

    “FANOVO “manufactures durable sight glasses in aluminum, stainless steel, brass, Stainless Steel 316L, comprehensive OEM/ODM customization services.” (product category page)”

  • Kobold

    “Kobold product page: “Sight Glass with Rotor, Flap or Drip Tube DAR, DAK, DAT” (offers sight-glass flow indicators with rotor, flap or drip tube designs).”

  • FergoGermany/Europe implied

    “Fergo product page: “We can offer these flow sight glasses with bodies made of stainless steel (1.4408/Cf8M)… DIN 2501 PN16” (flow sight glass product description).”

  • ACI24

    “ACI24 product page: “Our flow sight glasses are available as standard in cast iron, cast steel, or stainless steel, with special materials… ” (offers flow sight glasses).”

  • Alfotech

    “Alfotech product page: “High-quality sight glasses for process industry needs… Stainless steel & DIN-compliant In-Line sight glass” (sight-glass product offering up to stated pressures and DN sizes).”

  • Syveco

    “Syveco product page: “We provide sight flow indicators with fins, ball, flapper, steady baffles ...” (supplier/manufacturer product descriptions for sight glasses).”

  • NieRufGermany implied (EUR pricing)

    “NieRuf product pages: “flange sight flow indicator DN-80 … stainless steel borosilicate glass version with dripping edge” (product listings for DN80 PN16 flange sight flow indicators).”

  • CRP USUnited States implied

    “CRP product page: “Robust Sight Glasses for Chemical Processing - tubular sight glasses… made from heavy wall Borosilicate Glass” (manufacturer product range includes tubular sight glasses).”

  • Rhodes Flow Controls

    “Rhodes brochure (PDF) on Flexachem site: “Rhodes Flow Controls manufactures and supplies sight glasses and sight flow indicators, incorporating the brand names Rhodes and Universal.””

  • L.J. Star

    “Mentioned in a market list: “The top 10 sight glass manufacturers include Fanovo for excellent value in OEM projects, L.J. Star for high-safety applications...” (listed as a recognized sight-glass manufacturer).”

Compiled from public sources and refreshed periodically. Always verify certifications and capabilities directly with the manufacturer before ordering.

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What to specify in your RFQ

Manufacturers quote faster and more accurately when your request covers these points.

  • Nominal size and flange standard

    Specify DN80 and the flange standard (e.g., DIN 2501 PN16) so suppliers quote correct flange drilling and gasket face.

  • Body material

    State stainless-steel grade required (e.g., 1.4408/316, 316L) or alternative (cast steel, cast iron, Hastelloy) for corrosion resistance.

  • Viewing window type and material

    Specify glass type (borosilicate, soda‑lime, laminated) and any safety/pressure ratings or inspection standards.

  • Drip-tube / internal device

    Specify that a drip tube is required and whether you need rotor, flap or fixed drip-edge configurations and orientation.

  • Design pressure and temperature

    Give required PN (PN16) and min/max operating temperatures to ensure gasket and glass compatibility.

  • Connection details and dimensions

    Provide flange drilling, face-to-face length, any reducing bushes or weld ends, and gasket type (RTJ, flat-faced).

  • Quantity and delivery

    State required quantity, single-piece or series production, and required delivery/lead time for accurate MOQ and pricing.

  • Standards & certifications

    List required standards (DIN, EN, ASME) and any material/certification paperwork (material certificates, PED/CE) needed for acceptance in Germany.

Sourcing FAQ

How do I verify a supplier actually manufactures sight glasses?
Ask for factory photos, product datasheets showing model numbers and materials, and statements such as “we manufacture” or OEM/production capability; verify by checking product pages on the supplier’s own domain.
What minimum order quantities (MOQs) are typical?
MOQs vary by manufacturer and whether you request standard catalogue items or custom DN80 PN16 with special materials; request a firm MOQ from each quoted manufacturer—many will accept single-unit samples but series pricing needs batch quantities.
Which certifications should I request for German use?
Request material certificates (EN 10204/3.1), applicable conformity to DIN/EN standards, and PED/CE documentation if the sight glass forms part of pressurised equipment to be placed on the EU market.
What drives lead time for DN80 PN16 sight glasses with drip tubes?
Lead time depends on customization level (special materials, custom flanges, glass type), stock availability of DN80 PN16 components, welding/fabrication workload, and required testing/certification.

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