Type CG

The Alfa Laval Type CG access tank covers are circular glass manway covers that provide a secure fit for openings of stainless steel tanks or containers used across a broad range of hygienic applications, including those in the wine, brewery, beverages, dairy and food industries. Designed to fit above the liquid level, they can be used as an inspection port or a closable means of access to the vessel interior for personnel. This makes visual and/or physical inspection easy, quick and convenient.

Type CG LP 640x360

Safe, easy and convenient access to – and inspection of – hygienic tank interiors

  • Secure fit onto the openings of non-pressure tanks above the liquid level (CG) and of up to 1 bar pressure tanks (CG-LP)
  • Makes visual and/or physical inspection of the tank interior easy and convenient
  • Hygienic design with Ra <0.8 surface finish
  • Compliance with 3-A Sanitary Standards and the U.S. Food and Drug Administration (FDA) Declaration of Conformity
  • Outward-opening lid with protective pin to prevent damage to the tank wall and safely keep the lid open

Part of the broad Alfa Laval portfolio of access tank covers, the circular Alfa Laval Type CG manway covers feature a glass lid made of thermally toughened soda lime silicate safety glass.

A sound choice for tank inspection and access in hygienic applications across the food, beverage and brewery industries, the tank cover provides clear, continuous and unobstructed visibility of processes or products in tanks or vessels. This provides the means for early detection and response that can help prevent costly downtime.

What’s more, the Type CG tank covers are quick and easy to install, easily withstand pressure and force, and provide quick, easy and convenient entry and access to tank interiors.

Covering all tank needs

These circular covers with safety glass lid are part of the complete range of high-quality Alfa Laval access tank covers to meet virtually every requirement. Alfa Laval access tank covers securely fit the openings of non-pressure tanks above the liquid level. A wide variety of sizes with frame heights between 60 mm and 200 mm is available.

Hygienic design

The circular Alfa Laval Type CG tank covers feature a surface finish (Ra <0.8). The gaskets comply with the U.S. Food and Drug Administration (FDA) Declaration of Conformity.

Materials, surfaces and standards

The Alfa Laval Type CG tank covers are available in AISI 304 or AISI 316L stainless steel with EPDM, NBR, FPM and silicone seal materials. Its Ra <0.8 surface finishes and thermally toughened soda lime silicate safety glass meet the high quality requirements for hygienic processes.

3.1 Material Certification in accordance with EN 10204 is supplied.

For more information, please refer to documentation and the Tank cover selection guide.

How it works



To enable visual inspection and/or safe access into and egress from the tank, the tank cover swings outwards. A pin prevents the lid from hitting the tank wall and safely keeps the lid open. The tank cover is positioned above the liquid level on top of the tank to meet application requirements.

Operating principle

To inspect or enter the vessel, open the round Type CG cover by loosening the handle. After exiting the vessel, close the manway cover by tightening the handle.




Tank Cover Selection Guide

Alfa Laval offers more than 50 different types of high-quality tank covers that provide quick, easy and convenient entry to tank interiors. Finding the right tank cover for your tank doesn't have to be difficult. The main differences are explained in this selection guide.

Tank Cover Selection Guide 640x360

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Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.

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Visit the animations site and take a look inside a product to see and understand how it works. 

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