Hermetic manways

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Stainless steel hermetic manways (with clamp coupling) provide complete isolation of the liquid stored in the tank from the external environment.

Round manway BP405 (DN410)

Round manway

BP405 (DN410)

  • Mounting in the roof of the tank
  • Convex cover
  • Opening to the outside
  • Hinged cover
  • Hermetic manway with clamp closure
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available version without hinge (BP405SC)
Round manway BP420-490 (DN427-DN495)
  • Mounting in the roof of the tank
  • Opening to the outside
  • Hinged cover
  • Hermetic manway with clamp closure
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available diameters: DN427 / DN495
Round manway B150 (DN154-DN495)

Round manway

B150 (DN154-DN495)

  • Mounting in the roof of the tank
  • Opening to the outside
  • Hinged cover
  • Hermetic manway with clamp closure
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available diameters: DN154 / DN214 / DN316 / DN386 / DN427 / DN495
Round manway B150SC (DN154-DN495)

Round manway

B150SC (DN154-DN495)

  • Mounting in the roof of the tank
  • Removable, polished cover (without hinge)
  • Hermetic manway with clamp closure
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available diameters: DN154 / DN214 / DN316 / DN386 / DN427 / DN495
Round manway B400 (DN403)

Round manway

B400 (DN403)

  • Mounting in the roof of the tank
  • Convex cover
  • Opening to the outside
  • Hinged cover
  • Hermetic manway with clamp closure
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available version without hinge (B400SC)
Round manway B600 (DN606-DN1406)

Round manway

B600 (DN606-DN1406)

  • Mounting in the roof of the tank
  • Opening to the outside (upwards and sideways)
  • Hermetic manway with clamp closure
  • Hinged cover
  • Optional: internal safety grid / two-way relief valve / manway with smaller diameter welded to cover
  • On request version with a frame height of up to 1000 mm (standard 100 mm)
  • Gasket material: EPDM, NBR
  • Available diameters: DN606 / DN706 / DN806 / DN906 / DN1006 / DN1106 / DN1206 / DN1306 / DN1406

Hermetic manways - essential information

The hermetic manway allows complete isolation of the medium in the tank from the external environment. The gasket, located around the edge of the manway cover, forms a hermetic barrier once the clamp coupling is in place and tightened. This makes it impossible for air to enter the sealed tank.

 

This type of round manways is most often installed in tanks used for transporting liquid food products (for example, in pallet tanks). However, nothing prevents the use of round clamp manways in other applications as well. Nevertheless, the operating environment should be carefully analyzed each time for the resistance of the materials used in the manway's construction.

 

Clamp hermetic manways can successfully operate in various types of filters and tanks, as well as in other process equipment.

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