Hygienic Oval 316L Manway for Food & Pharma
Compared with traditional circular manways, the oval design reduces required installation height, making it particularly suitable for facilities with limited vertical space. With controlled surface finishing and food-grade sealing materials, the manway supports hygienic operation and compliance with recognized international standards.
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Product Overview
In hygienic processing industries, tank access points are critical not only for personnel entry, but also for maintaining overall system cleanliness and regulatory compliance. Poorly designed manways can introduce crevices, sealing risks, and cleaning challenges that compromise product safety. The Oval 316L Sanitary Manway is engineered to address these concerns by combining a space-efficient oval geometry with hygienic materials and surface treatment.
All wetted parts are manufactured from stainless steel and finished to a smooth sanitary surface. The external-opening cover design allows safe and controlled access for inspection and maintenance, while the gasket sealing system ensures reliable closure during operation. The manway can be adapted to different vessel designs and process requirements through multiple size options and configurable features.
Product Features
1. Space-Saving Oval Design
The oval geometry requires significantly less vertical clearance than circular manways with equivalent access area, making it suitable for compact processing rooms, low-ceiling plants, and dense tank layouts while still allowing convenient personnel entry.
2. Hygienic Stainless Steel Construction
All product-contact components are manufactured from 304 or 316L stainless steel, offering excellent corrosion resistance and suitability for food and pharmaceutical environments. The material selection supports long-term use under repeated cleaning and sanitation cycles.
3. Sanitary Surface Finish
The smooth internal surface finish (Ra 0.8–0.5 μm) reduces residue buildup and supports effective CIP cleaning. External finishes can be selected according to installation environment and aesthetic requirements.
4. Reliable Sealing System
The manway is equipped with food-grade gasket materials and a robust closure structure to ensure secure sealing during operation. Different gasket materials are available to match temperature, chemical exposure, and process requirements.
5. Flexible Configuration Options
Multiple size ranges, heights, surface finishes, and gasket materials allow the manway to be adapted to a wide variety of tanks and vessels used in food and pharmaceutical processing.
Applications
Food & Beverage Industry
Storage tanks for dairy, juice, and beverage processing
Mixing vessels for food ingredients and formulations
Inspection access for cleaning and maintenance of tank internals
Pharmaceutical Industry
Process and preparation tanks
Reactors and bioreactors requiring hygienic access
CIP/SIP-compatible vessels for sterile operations
Outward opening manhole cover
Plastic hand wheel or stainless steel hand wheel
Internal surface：Ra0.8μm-0.5μm
Outside surface: Mirror polish, Matt finish, sand-blasting finished.
Max. pressure：0.5bar
Gasket：EPDM 、NBR、SILICON、FPM conform to FDA177.2600
Height：100、120、150
Material：AISI304(1.4301)/316L(1.4404)
Size: 200/250/300/350/400/450/500/600
Installation & Maintenance Notes
Ensure the tank opening is flat, clean, and free of sharp edges prior to installation.
Select gasket material according to process temperature and chemical exposure.
Clean regularly using non-abrasive, food-grade cleaning agents.
Inspect gasket condition periodically and replace when signs of wear appear.
FAQ
Q1: What materials are available for the oval sanitary manway?
A: The manway is available in AISI 304 and AISI 316L stainless steel (EN 1.4301 / 1.4404).
Q2: What surface finishes can be selected?
A: The internal surface finish is Ra 0.8–0.5 μm. External finishes include mirror polish, matte finish, and sand-blasted finish.
Q3: What gasket materials are supported?
A: EPDM, NBR, silicone, and FPM gaskets are available, all compliant with FDA 21 CFR 177.2600.
Q4: Is the manway suitable for hygienic industries?
A: Yes. The manway is designed for food, beverage, and pharmaceutical applications, with sanitary materials, smooth surfaces, and reliable sealing.
Q5: Can the manway be customized?
A: Yes. Size, height, surface finish, gasket material, and additional features can be customized according to vessel design and process requirements.
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