Pressure Elliptical Full Sight Glass Manhole Cover

Sanitary sight glass manhole is a multifunctional hygienic access component integrating observation and maintenance functions, specially designed for sanitary production tanks and pressure vessels. Equipped with high-transparency safety sight glass, it allows real-time visual observation of internal material status, reaction progress and liquid level without opening the manhole cover. Adopting high-quality stainless steel body and full sealed structure, the product features no sanitary dead corners, easy cleaning and sterilization. It perfectly combines the advantages of quick opening manhole and sight glass, meeting the dual demands of equipment daily maintenance and real-time production monitoring, and complies with international high hygienic standards.

【Size】250 -600
【Material】304/316L Stainless Steel
【Surface Roughness】Ra≤0.8μm
【Sealing】Food Grade Silicone, EPDM, PTFE, FKM

Pressure Elliptical Full Sight Glass Manhole Cover

Key Features

‘•Dual-function integrated design, realizing real-time internal observation and manual maintenance access in one unit.
•High-penetration safety sight glass, high light transmittance, clear viewing, pressure and impact resistant.
•Premium SS304/SS316L stainless steel body, excellent corrosion resistance and long service life.
•Mirror polished inner and outer surface (Ra≤0.8μm), smooth and seamless, no residue, no hygienic dead angle.
•Food-grade EPDM/silicone/PTFE sealing gasket, reliable sealing, no leakage, high temperature and aging resistance.
•Reasonable quick-opening or bolt fastening structure, flexible opening, convenient installation and disassembly.
•Suitable for positive pressure, negative pressure and high-temperature sterilization working conditions, stable and safe.
•Fully compliant with 3A, FDA, DIN, ISO and other international sanitary industry standards.
•Customized sizes, shapes and sight glass specifications to fit various vessel equipment.

Technical Specifications

•Body Material: SS304 / SS316L Stainless Steel
•Sight Glass Material: High borosilicate glass / Tempered safety glass
•Surface Treatment: Inner Ra≤0.8μm, Outer Mirror Polishing
•Seal Material: Food Grade EPDM, Silicone, PTFE
•Working Pressure: 0~0.6MPa / Custom pressure grade available
•Working Temperature: -20℃ ~ 120℃
•Connection Type: Welded Type, Flange Type, Clamp Type
•Executive Standard: 3A, SMS, DIN, ISO, FDA Compliant
•Optional Shape: Round, Oval Sight Glass Manhole

Applications

Widely used in hygienic production equipment that requires real-time visual monitoring and regular maintenance in various industries:
•Food & Beverage Industry: Dairy, beer, fruit juice, beverage, condiment, edible oil production tanks and mixing equipment
•Pharmaceutical Industry: Sterile pharmaceutical vessels, biological fermentation tanks, raw material storage tanks and reaction equipment
•Cosmetic & Daily Chemical Industry: Skincare product mixing tanks, essence blending vessels, sterile cosmetic production equipment
•Biological Engineering: Microbial fermentation tanks, bioreactors, enzyme preparation production equipment
•Fine Chemical Industry: Sanitary fine chemical reaction kettles, purification tanks, sealed mixing vessels

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