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Industrial Access Hatches

Durable and watertight industrial access hatches made of V2A/V4A stainless steel (AISI 304/316) for underground spaces in industrial and infrastructure facilities. Equipped with brass triangular lock, gas strut, neoprene gasket and anti-slip chequered surface. Corrosion, moisture and load resistant (B125-F900). Available in multi-section versions with assisted opening and paving adaptation.

Industrial access hatches provide practical and safe entry to underground spaces in industrial, commercial and infrastructure buildings. Robust construction and refined details ensure durability, tightness and ease of use.

Each hatch consists of a 240 mm high mounting frame and a cover made of stainless steel chequered plate, hinged along the longer side. The hatch is resistant to gases and splash water, making it ideal for humid environments requiring high tightness.

Standard B&K GROUP hatches include:

  • Brass triangular locking mechanism
  • Stainless steel gas strut
  • Anti-drop safety device
  • Corrosion-resistant, replaceable 304 (optionally 316) stainless steel hinges
  • Neoprene gasket protecting against odours and water
  • Grounding lugs
  • Anti-slip chequered surface for paving or resin/asphalt infill
  • Bolt or triangular lock security

Hatches comply with EN 124 and are available in load classes B125 (125 kN), D400, E600 up to F900 (900 kN) for heavy-duty areas such as roads, yards and ports.

Optional features:

  • Multi-section versions with removable central post
  • Hydraulic or electric opening assistance
  • Frame cast into precast concrete housing
  • Cover prepared for paving or anti-slip infill
  • Cylinder lock ready (lock not included)

B&K GROUP access hatches combine premium stainless steel fabrication, durability and safety, making them indispensable for demanding construction and industrial projects.

Frequently asked questions

What is the difference between V2A and V4A hatches?

V2A (1.4301 / AISI 304) is standard stainless steel suitable for most production halls, warehouses and breweries. V4A (1.4404 / AISI 316L) contains molybdenum and resists chlorine, salts and organic acids, making it ideal for pools, dairies, pharmaceutical plants and aggressive chemical environments.

Which industrial access hatches are recommended for breweries?

Breweries require (1) tightness to prevent odour backflow, (2) chemical resistance to organic acids, alcohol and caustic cleaning, (3) HACCP hygiene. We recommend V4A hatches with EPDM/silicone gaskets, D400 load class (forklift traffic) and R12 anti-slip surface. Typical sizes: 600×600 or 800×800 mm depending on shaft diameter.

Are the hatches watertight?

Standard models feature a gasket (IP54-IP67 water tightness); gas-tight labyrinth gaskets are optional. IP68 fully submersible versions are available for pharmaceutical and chemical industries, selected according to HACCP/IFS or project documentation.

What sizes are available?

Standard square: 400×400, 500×500, 600×600, 800×800, 1000×1000 mm. Round: diameters 500, 600, 800, 1000 mm. Custom sizes (including oval) available on request. Maximum single cover: 1500×1500 mm; larger areas segmented into 2-4 parts.

Do the hatches have tamper protection?

Yes — three options: (1) patent locks opened with service key (public car parks), (2) automatic latches lockable with padlock (closed facilities), (3) hydraulic locks with open-position sensors (BMS integration). Pharmaceutical versions include sealable service locks.

How to install a hatch in an existing floor?

Procedure: (1) diamond-saw cut opening with 10-15 mm tolerance, (2) bond frame with high-strength resin or rapid-set concrete, (3) seal connection to existing shaft/drainage. For 24/7 operations we offer rapid-installation systems ready in 24 hours.