New product

Round manway

W4/B (DN220-DN500)

  • Round pressure manway
  • Pressure up to 8.0 bar (depending on diameter)
  • Vacuum: up to -1.0 bar
  • Edge closure (handwheels tightened directly to the rim of the lid)
  • Made of stainless steel AISI 304L or AISI 316L
  • Manway with aseptic cover
  • Gasket mounted in the cover
  • Gasket material: EPDM, silicone, NBR or Viton
  • Available diameters: DN220 / DN300 / DN360 / DN400 / DN450 / DN500

Stainless steel manway W4/B - key features

The W4/B 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.

Edge closure

The lid of the W4/B manway is closed by means of handwheels equipped with a specially shaped pressing element, which fits directly to the rim. Thanks to this, the manway keeps its tightness, and the process of closing and opening is fast and safe. 

 

This solution is particularly recommended for applications where the speed and ease of opening of the manway cover plays a primary role. 

Handwheels mounting

There are two options for fixing handwheels in W4/B stainless steel manways: 

  • screw,
  • pin. 

Depending on the version of the manway and its pressure resistance, an appropriate fixing is used (for details, see tab: "dimensions").

Screw fixing

Pin fixing

Pressure resistance

The pressure resistance of individual versions of the W4/B manway depends primarily on the required diameter of the manway and the number of handwheels. All available configurations are shown in the "dimensions" tab.

 

The W4/B manway cover is manufactured in accordance with the guidelines of the PED Pressure Directive, however, this model has been designed for less demanding applications. Thus, the P.E.D. passport for this model is not available.

Lid and hinge

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.

Great features at a reasonable price

The W4/B round pressure manway can be successfully installed in the roofs of pressure vessels of various purposes. These can be stainless steel tanks used:

  • in the food industry,
  • in beverage production,
  • in brewing,
  • in equipment used in power generation, chemical industry and many others.

Manway elements

Symbol Element
P handwheel
U handle

DN220

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/220/I 240 100 -1.0/+1.0 3 screw
W4/B/220/II 240 100 -1.0/+5.0 3 pin
W4/B/220/III 240 100 -1.0/+8.0 4 pin

DN300

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/300/I 320 100 -1.0/+1.0 3 screw
W4/B/300/II 320 100 -1.0/+3.0 3 pin
W4/B/300/III 320 100 -1.0/+5.0 4 pin

DN360

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/360/I 380 100 -1.0/+1.0 3 screw
W4/B/360/II 380 100 -1.0/+2.5 3 pin
W4/B/360/III 380 100 -1.0/+5.0 4 pin

DN400

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/400/I 420 100 -1.0/+1.0 4 screw
W4/B/400/II 420 100 -1.0/+3.5 4 pin
W4/B/400/III 420 100 -1.0/+6.0 6 pin

DN450

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/450/I 470 100 -1.0/+1.0 4 screw
W4/B/450/II 470 100 -1.0/+3.0 4 pin
W4/B/450/III 470 100 -1.0/+6.0 6 pin

DN500

Model Ø [mm]

H

[mm]

MAX [bar] Handwheels Handwheels fixing
W4/B/500/I 520 100 -1.0/+1.0 4 screw
W4/B/500/II 520 100 -1.0/+2.0 4 pin
W4/B/500/III 520 100 -1.0/+4.5 6 pin

Technical parameters

Product seriesSeries W
ShapeRound manways
TypePressure manway
Frame height (in mm)100 mm
Frame wall thickness (in mm)10.0 mm
Opening typeOutward
IndustryChemical
Sizebelow DN300, DN300 - DN500
Mounting methodin the tank roof (top manways)
Pressure0.5 - 2.5 bar, 2.51 - 4.5 bar, 4.51 - 6.5 bar, 6.51 - 8.5 bar
Vacuum pressurefrom -0.51 to -1.0 bar
PED certificateno
Steel gradeAISI 304/304L, AISI 316/316L
Gasket materialEPDM, Silicone, Viton
Handwheel materialINOX

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