Stainless Steel Pressure Round Sanitary Manhole with SS Handle
Manufactured from AISI 304 / 316L stainless steel (1.4301 / 1.4404), the manhole offers excellent corrosion resistance and long-term durability in sanitary environments. The outward-opening cover design combined with a reliable sealing system makes it suitable for low-pressure sanitary applications. All product-contact surfaces are finished to a controlled sanitary roughness, supporting effective CIP cleaning and hygienic operation.
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Product Overview
In hygienic processing systems, the manhole is a critical interface between personnel access and process safety. A poorly designed manhole can compromise hygiene, sealing reliability, and operational safety. The Stainless Steel Pressure Round Sanitary Manhole with SS Handle is engineered to balance structural reliability with hygienic performance, making it suitable for routine inspection and maintenance of sanitary vessels.
The round lid design allows uniform load distribution during operation, while the outward-opening structure ensures safe access during maintenance. All wetted surfaces are smoothly finished, minimizing residue retention and reducing the risk of bacterial accumulation. The stainless steel hand wheel or handle provides stable and reliable operation in daily use, even in environments requiring frequent opening and closing.
Product Features
1. Reliable Round Structure for Sanitary Applications
The round manhole design provides balanced structural behavior under low-pressure operating conditions. This geometry supports stable sealing performance while maintaining a compact and easy-to-install structure for sanitary tanks and vessels.
2. Hygienic Stainless Steel Construction
All wetted components are manufactured from AISI 304 or 316L stainless steel, ensuring corrosion resistance and compatibility with food and pharmaceutical processes. The materials are non-reactive and suitable for repeated cleaning and sanitation cycles.
3. Sanitary Surface Finish
Internal surfaces are finished to Ra 0.8–0.5 μm, reducing product residue adhesion and supporting effective CIP cleaning. External finishes can be selected according to installation environment and aesthetic requirements.
4. Secure Sealing System
The manhole is equipped with food-grade gasket materials and a stable closure system to ensure reliable sealing during operation. Multiple gasket material options allow adaptation to different process media and cleaning conditions.
5. Flexible Configuration Options
With multiple nominal sizes, height options, surface finishes, gasket materials, and handle types, the manhole can be configured to suit a wide range of sanitary tank designs and operational requirements.
Applications
Food & Beverage Industry
Storage tanks for dairy products, beverages, and liquid food ingredients
Mixing and blending vessels requiring periodic inspection and cleaning
Sanitary tanks used in CIP-based production lines
Pharmaceutical Industry
Process and preparation tanks
Reactors and auxiliary vessels requiring hygienic access
Equipment used in controlled sanitary environments
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
Installation Guidelines
Ensure the tank opening and flange surface are flat, clean, and free from burrs before installation.
Select gasket material according to process temperature and cleaning chemicals.
Tighten fasteners evenly to ensure uniform gasket compression and sealing performance.
Maintenance Recommendations
Clean regularly using CIP systems or non-abrasive, food-grade cleaning agents.
Inspect the gasket periodically for wear or deformation and replace when necessary.
Check sealing performance after extended operation or maintenance activities.
FAQ
Q1: What is the maximum pressure this manhole can handle?
A: The standard design is rated for a maximum working pressure of 0.5 bar, suitable for low-pressure sanitary tank applications.
Q2: What materials are available for the manhole?
A: The manhole is available in AISI 304 and AISI 316L stainless steel, depending on corrosion resistance and hygiene requirements.
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 manhole suitable for CIP cleaning?
A: Yes. The smooth internal surface finish and hygienic design support effective CIP cleaning without disassembly.
Q5: Can the manhole be customized?
A: Yes. Size, height, surface finish, gasket material, and handle type can be customized according to vessel design and application requirements.
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