Sanitary Manhole Covers
Round Manhole For Tank
Round stainless manhole covers for process and storage tanks.
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Pressure Round Manhole Cover
A round cover built for vessels that work under pressure, where a standard lid that happens to fit is not an option.
Overview
What This Pump Does
Pressure round manhole covers are access covers for vessels operating above atmospheric pressure. The closure arrangement and the cover itself are built for the pressure duty rather than adapted from an atmospheric design.
They are specified with the vessel so the opening, the ring and the documentation match, and they are supplied in stainless steel with the gasket chosen for the product and the cleaning cycle.
| Cover type | Pressure rated round manhole cover |
|---|---|
| Material | Stainless steel matched to the vessel |
| Pressure duty | Above atmospheric, rating confirmed per vessel |
| Gasket | Selected for product and cleaning chemistry |
| Documentation | Accounted for in the vessel documentation package |
Key Benefits
Why A Pressure Cover Is A Different Product
Built For The Duty
Pressure rated construction with a closure arrangement designed for the vessel pressure.
Part Of The Vessel Documentation
On a pressure vessel the cover forms part of the certified assembly, not an accessory.
Even Gasket Loading
Multiple closure points distribute load so the seal holds at pressure.
Stainless Construction
Material matched to the vessel with the internal finish specified.
Application Scenarios
Where It Is Installed
Pressure Vessels
Access into vessels operating above atmospheric pressure.
Jacketed Reactors
Vessels under pressure during reaction or sterilisation.
Fermentation Under Pressure
Vessels that hold pressure during fermentation or carbonation.
Who It Is For
- Pressure vessel fabricators
- Breweries with pressurised vessels
- Pharmaceutical and chemical plants
- Engineers replacing a cover on a certified vessel
Problems It Solves
An atmospheric cover on a pressure vessel
Fitting an unrated cover to a pressurised vessel is a safety issue, not a specification detail.
The seal fails under pressure
Closure design and gasket selection together are what hold the seal when the vessel is pressurised.
Documentation gaps
On a certified vessel the cover has to be accounted for in the vessel documentation.
Technical Features
How It Is Built
- Pressure rated round manhole cover
- Closure arrangement designed for pressure duty
- Stainless steel construction
- Gasket selected for product and cleaning chemistry
- Specified with the vessel and its documentation
- Sized against the opening and ring
Specifications
Technical Data
Pressure rating and opening size are confirmed per vessel. Send working and design pressure with the opening dimensions.
| Cover type | Pressure rated round manhole cover |
|---|---|
| Material | Stainless steel matched to the vessel |
| Pressure duty | Above atmospheric, rating confirmed per vessel |
| Gasket | Selected for product and cleaning chemistry |
| Documentation | Accounted for in the vessel documentation package |
Materials And Process
What Goes Into Every Unit
Materials
- Stainless steel cover and ring
- Pressure rated closure components
- Gasket material selected for the duty
Manufacturing And Assembly
- Cover forming and machining
- Closure assembly
- Polishing and finishing
- Fit and seal check before dispatch
Quality Control
- Dimensional check against the opening
- Seal and closure function checked
- Documentation issued with the vessel
Standards And Certification
- Included in the vessel documentation where the vessel is certified
Customization Options
- Opening size and pressure rating
- Gasket material
- Closure and handle arrangement
- Internal finish
Compared With Other Options
| Round manhole cover | The standard round cover suits atmospheric vessels. Above atmospheric, this pressure rated version is required. |
|---|---|
| Rectangular manhole cover | A rectangular cover gives more access but is harder to seal, especially under pressure. |
Use Guide
Specifying A Pressure Rated Cover
State The Pressure
Working and design pressure, including any sterilisation or vacuum condition.
Measure The Opening
Opening dimensions, ring details and gasket groove, with a photograph.
Check The Documentation
On a certified vessel confirm how the cover is recorded in the vessel file.
Close In Sequence
Tighten the closure evenly in sequence so the gasket loads uniformly.
Answers
Pressure Round Manhole Cover FAQ
When do I need a pressure rated cover?
Whenever the vessel operates above atmospheric pressure. A cover that simply fits the opening is not sufficient.
Can it be fitted to an existing vessel?
Send the opening details, the vessel pressure and a photograph, and we will confirm what can be supplied.
What material is used?
Stainless steel matched to the vessel.
Is the gasket included?
Yes, selected for the product and the cleaning chemistry and temperature.
Does the cover come with documentation?
On a certified vessel the cover is accounted for in the vessel documentation package.
Related Equipment
Related Equipment From The Same Line
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Industries Guides And Solutions
Need Pressure Round Manhole Cover Sized For Your Duty Point
Send the vessel pressure and the opening dimensions and we will confirm the cover and the gasket.