Verified 3 August 2026

Stainless steel process sight glass DN80 PN16 manufacturers in Italy

Buyers looking for stainless-steel process sight glass DN80 PN16 should evaluate manufacturers that produce flanged DN80 PN16 stainless tubular or flange sight-glass assemblies (stainless body, suitable glass, PN16 rating). For an Italy-focused sourcing search, prioritize suppliers with stainless fabrication, PN16 flange offerings, DIN/EN or PED compliance, and documented DN80 product data.

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8 verified manufacturers

  • FANOVO

    “"FANOVO manufactures durable sight glasses in aluminum, stainless steel, brass, and carbon steel, with borosilicate or tempered glass. OEM/ODM customization ..."”

  • ACI24

    “"Our flow sight glasses are available as standard in cast iron, cast steel, or stainless steel, PN 16 Tubular sight glass for working pressures up to max. 16"”

  • bomFrance

    “"Tubular sight glass DN40 PN16 in stainless steel 316Ti, with ball integrated check ・ 304L, with clamp connections and control valve" and page hosted on bom.fr (+33 contact shown).”

  • SwissfluidSwitzerland

    “"Sight Glasses fully made of stainless steel as reliable flow indicators for process media..." and product PDF: "SST Sight Glasses Stainless Steel"”

  • CRPUnited Kingdom

    “"The stainless steel tubular sight glasses CRP manufacture are designed to offer the highest levels of process viewing..."”

  • L.J. Star

    “"Sight Glasses for Process Observation - LJ Star" and product line description of METAGLAS® brand sight windows made of duplex stainless steel.”

  • Aerre Inox

    “Document provides specifications for SP-FL and SP-FLH flanged sight glass dimensions from Aerre Inox.”

  • Alfotech

    “Product page: "Stainless steel & DIN-compliant In-Line sight glass with weld ends · Resistant up to +120°C temperature. · Withstands pressures up to 10 bar..."”

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 required (e.g., EN/DIN PN16 or ANSI equivalent) so the supplier can confirm flange drilling and compatibility.

  • Material grades

    State stainless-steel grade for body and wetted parts (e.g., 304/304L, 316/316L, 316Ti or duplex) and glass type (borosilicate, toughened/tempered, fused).

  • Pressure and temperature

    Give maximum operating pressure (PN16) and expected operating and cleaning temperatures to ensure glass and gasket selection match.

  • Connection type and face-to-face length

    Specify flange or weld ends, gasket type, and any required face-to-face dimension or installation envelope constraints.

  • Standards and certifications

    Request applicable standards (PED/CE, EN/DIN, 3-A, FDA, ATEX) and material traceability/certificates needed for your sector.

  • Quantity and delivery

    Provide required quantity, serial production vs one-off, and desired delivery date so suppliers can quote tooling/lead-time impacts.

  • Inspection and testing

    State required tests (hydrostatic, leak test, PMI, visual inspection) and any witness or third-party inspection needs.

Sourcing FAQ

How do I verify a sight glass manufacturer for DN80 PN16?
Ask for product datasheets showing DN80 and PN16 ratings, material grades, pressure/temperature limits, and photos of the actual manufactured assembly; request material certificates and test reports.
What typical minimum order quantities (MOQs) should I expect?
MOQs vary by supplier and whether items are standard or customized; off-the-shelf DN80 PN16 flanged sight glasses may be available in single units, while customized materials or special glass types may have higher MOQs—ask suppliers for their specific MOQ.
Which certifications matter for process sight glasses?
Common relevant items are PED/CE for pressure equipment in Europe, EN/DIN conformity, material mill certificates (EN 10204), and sector-specific approvals such as 3-A for dairy or FDA-compatible materials for food/pharma.
What drives lead time for DN80 PN16 stainless sight glasses?
Lead time is driven by material availability (special stainless grades), glass type and machining, customization (special flanges, face-to-face lengths), finishing, and any required testing or certification.

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