Alchem Process Ltd
Unit 4 Church Road Ind Estate,
Gorslas, Llanelli, Carmarthenshire,
SA14 7NN.
Tel: 00 44 (0) 1269 841 324

Domed Hygienic Manways

Manways and Inspection Hatches

Domed Hygienic Manways

Download Data Sheet in PDF Format: 

Our range of domed hygienic manways was developed some 15 years ago to suit the exacting standards demanded by the Dairy, Brewing and Beverage Industries.  The fully polished domed lid coupled with the profiled hygienic seal, make these manways equally attractive to the Pharmaceutical and Cosmetic industries. 


Designed for top mounting on storage and process vessels the domed non-retentive cover makes these manways ideal for outdoor use.  All rainwater hold-up areas are completely removed.  These units are also suitable for use under low pressure and vacuum conditions. 


  • Sizes – from Ø200 through to Ø 1200mm
  • Fully polished lids in 316L and 304L materials
  • TARC - Hinged multi clamp closure
  • TARL –Single clamp closure with lever arm
  • FDA approved seals in EPDM, Silicone, Viton® or Nitrile
  • Frame mounted and glueless seals
  • Descaled finish on neck ring
  • Material certificates to EN 10204 3.1.B
  • Lockable handwheels
  • Full range of FDA approved seal materials
  • Aluminium or Carbon Steel Neck Rings


Safety Devices:

  • Safety Bolt for pressure & vacuum release – Link to explanation and photo on the last page
  • Air Actuated Locking Device – Link to explanation
  • Magnetic Proximity Switches - Link to explanation
  • Security Grids, Meshes and Crosses  - Link to explanation