W4/C (DN220-DN500)

The W4/C round pressure manway is manufactured from stainless steel in AISI 304L (1.4307) grade, as well as AISI 316L (1.4404) for applications requiring greater resistance to environmental factors. The ranges of available sizes from DN220 to DN500, together with the pressure parameters, affect the ease of selection depending on the size of the tank.

The standard gaskets used in the manway are made of EPDM, however, other optional gasket materials significantly expand the spectrum of applications for the manway

The solid closure of the manway cover, in the form of pressing elements permanently fitted to the tabs located on the edge of the cover, makes opening and closing the manway extremely comfortable.

At the same time, this solution reduces the deposition of dirt in the cover area, which ensures a higher level of hygiene of the manway.

The bolts of the handwheels are attached to the flange (frame) of the manway using solid pin closures. 

This solution guarantees both the high strength of each manway closure and the ease and speed of replacing these components in the future. 

The convex shape of the cover and the polishing of its surface are designed to reduce the adhesion of dirt, and help liquids drain freely.

This advantage should be especially appreciated by those users who are forced to frequently clean process lines in order to maintain high hygienic standards. 

The whole is completed by a hinge responsible for stabilizing the lid during opening and closing, as well as a handle to make this process easier.