Alfa Laval Oval Manway Cover

Euroflow GmbH Alfa Laval Master Distributor in central and southern Germany

Alfa Laval Oval Manway Cover

Alfa Laval Oval Manway Cover

The oval manway cover is a stainless steel tank access solution for process tanks and vessels in the dairy, food, beverage, and brewery sectors. Covers mount above or below the liquid level on the tank side. The seal design is unaffected by positive or negative pressure inside the vessel. Operators can open a cover by loosening the handle to allow for quick inspection or full tank entry. This stainless steel manway cover range provides a secure fit for static tanks.

The range spans five model variants including Type O, LKD 532 x 432, LKD 532 x 432 flat lid, LKD 542 x 446, and LKD 440 x 320. Each is rated for different tank configurations and static pressure requirements. Ratings start from 1.5 bar and reach up to 4.8 bar. Steel parts are available in 1.4301 (304) or 1.4404 (316L). Every model ships with a 3.1 material certificate per EN10204. FDA-compliant seal materials are standard, and 3-A approved versions are available for specific models.

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Documentation

The oval manway cover range addresses tank openings from compact side-mounted inspection points to full-entry hatches rated for substantial static pressure. All five variants share a construction consisting of a stainless steel cover plate with a shaped gasket and a frame that seats against the tank wall. The seal sits in a hygienic position. It is not displaced by positive or negative pressure changes inside the tank. This makes the range highly reliable for vessels containing liquids at various levels.

Hygienic tank access pressure ratings

Pressure capability varies significantly across the model list. The LKD 532 x 432 carries the highest rating at 4.8 bar (480 kPa) maximum static pressure and is tested at 3.75 bar (375 kPa). The LKD 542 x 446 handles 2.8 bar (280 kPa) static pressure with a test pressure of 4.2 bar (420 kPa). For applications requiring a low profile, the LKD 532 x 432 flat lid handles up to 2.3 bar (230 kPa) static. The LKD 440 x 320 is rated at 1.5 bar (150 kPa) static and resists a maximum negative working pressure of 0.5 bar (50 kPa). Selecting the correct model depends on the specific operating pressure envelope of the vessel.

Seal material selection and thermal limits

All models accept four primary seal materials to ensure process compatibility. EPDM operates from -15 °C to 90 °C but cannot be used with oils or fats. NBR is suitable for temperatures between -30 °C and 110 °C. Silicone (Q) extends the range from -50 °C to 200 °C. FPM handles the widest thermal range from -10 °C to 250 °C. All seals carry FDA compliance. It is important to note that Silicone (Q) does not meet the GB 4806.16-2025 standard and cannot be used in China based on current regulations.

Construction materials and hygienic finish

Steel parts for every model are manufactured in either 1.4301 (304) or 1.4404 (316L) stainless steel. Any plastic components used in the handle or hinges are made of nylon. The Type O uses an electropolished cover with a brushed frame where internal surfaces stay below Ra 0.8 µm. The LKD series models feature an acid pickled standard finish with product-wetted surfaces at Ra 0.8 µm. On models ordered with 3-A approved options, the surface finish is electropolished and the lid wetted surface reaches Ra 0.4 µm.

Shadowless installation for beverage vessels

The LKD 542 x 446 utilizes an angled, shaped frame to seat against the tank wall. This design prevents the formation of recesses where liquid can pool or CIP spray shadows can occur. The angled frame geometry also makes external cleaning easier for operators. The lip seal design used on this specific model maintains its hygienic position regardless of internal pressure. With a static pressure rating of 2.8 bar (280 kPa), it is appropriate for pressurized beverage and brewery vessels requiring complete CIP coverage.

Technical Details

  • Steel parts: 1.4301 (304) or 1.4404 (316L)
  • Plastic parts: Nylon
  • Seal materials (FDA): EPDM, NBR, FPM, Q (silicone)
  • EPDM temperature range: -15 °C to 90 °C
  • NBR temperature range: -30 °C to 110 °C
  • Silicone (Q) temperature range: -50 °C to 200 °C
  • FPM temperature range: -10 °C to 250 °C
  • LKD 532 x 432 max static pressure: 4.8 bar (480 kPa)
  • LKD 532 x 432 flat lid max static pressure: 2.3 bar (230 kPa)
  • LKD 542 x 446 max static pressure: 2.8 bar (280 kPa)
  • LKD 440 x 320 max static pressure: 1.5 bar (150 kPa)
  • LKD 532 x 432 dimensions (mm): A 532, B 432, C 663, E 265, F (100) (60), t 12, cover thickness 3
  • LKD 532 x 432 flat lid dimensions (mm): A 532, B 432, C 662, E 262, F 100, t 12, cover thickness 10
  • LKD 542 x 446 dimensions (mm): A 461, B 362, C 542, D 446, E 202, F 76, t 4, g 3
  • LKD 440 x 320 dimensions (mm): A 440, B 320, E 160, F 60, t 8, cover thickness 2
  • Model weights: LKD 532 x 432 flat lid (35.4 kg), LKD 542 x 446 (12 kg), LKD 440 x 320 (7.8 kg)
  • O-series pressure ranges (bar): O-440X320IO (1.3), O-490X395IO (2.7), O-510X370IO (3.2), O-544X440IO (2.8), O-542X446IO (2.8), O-659x534IO (4)

Options and Configurations

  • Inward, outward, or side-swing opening directions via optional hinges
  • Standard acid pickled finish or 3-A approved electropolished surface finish
  • Right-hand or left-hand opening configurations for side-mounted models
  • Type O model sizes 544x440 and 510x370 ordered to specific tank diameters from 1.3 m to 4.0 m
  • Standard and pressure models available for the LKD 440 x 320 variant
  • Specific flat lid version for bottom-mounted hygienic tank access applications
  • FDA compliant seals in EPDM, NBR, FPM, or Silicone (Q)
  • 3-A certification available for LKD 532 x 432 and LKD 440 x 320 models
  • Material certificate 3.1 according to EN 10204 supplied for all covers and frames
  • Compliant with European 1935/2004/EC and FDA declarations of conformity
  • Motor specifications not available for this product.

Dairy processing

Beverage processing

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Food processing

Beer production
Alfa Laval Prozesstechnik Edelstahl-Rohrleitungssystem und Wärmetauscher

Industries

The oval manway cover is essential for dairy processing, food manufacturing, and beverage processing. These sectors rely on secure tank access for maintenance and sanitation. Facilities in the brewery and wine industries use these covers to ensure hygienic integrity and safe physical entry into vessels.

Advanced Sensing and Control for Process Optimisation

Integrating Alfa Laval ThinkTop V50 and V70 units into your valve clusters delivers maximum uptime and significant resource savings. Their 360° LED status indication gives operators real-time flow path monitoring from any angle.

  • Resource savings: Pulse and Burst SeatClean reduce CIP fluid consumption by up to 95%.
  • Fast setup: Auto-Setup and Live-Setup cut commissioning time by up to 90%.
  • Durable: IP69K rated, -10°C to +60°C, Nylon PA12 and 1.4301 stainless steel.
  • Easy integration: Supports 24VDC PNP, AS-Interface, and IO-Link. MTTF of 224 years.
  • Universal fit: Directly interchangeable with ThinkTop Classic; fits all Alfa Laval hygienic actuators.

Ready to optimise your CIP return and process flows?

Our products
Alfa Laval Sensing and Control Think Top V50 and V70
Marcus Schmidt, Euroflow GmbH owner

Are you interested?

As an Alfa Laval Master Distributor in Southern Germany, Euroflow GmbH delivers premium components and expert solutions for the dairy, brewing, beverage, food, cosmetics and pharmaceutical industries. Operating across postal codes 66-99 and 07-08, we serve Baden-Württemberg, Bavaria, Saarland, Rhineland-Palatinate, Hesse, Thuringia and Saxony with dedicated technical expertise.

As your competent partner for system integration, tank construction and end-user solutions, we provide comprehensive support in selecting optimal equipment for viscous product handling and cleaning processes. Our focus on pumps, valves, heat exchangers and tank equipment ensures reliable process performance.

Contact us today for a personalised quote and discover how our technical expertise can optimise your operations.

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FAQ

Euroflow serves customers across southern and central Germany — covering postal code areas 66–99 and 07–08, spanning Baden-Württemberg, Bavaria, Saarland, Rhineland-Palatinate, Hesse, Thuringia, and Saxony. As an Alfa Laval Master Distributor for tank manufacturers, plant engineers, system suppliers, and end customers, we provide expert support in selecting and designing systems for viscous product handling and cleaning applications.

The LKD 532 x 432 and the LKD 440 x 320 are available as 3-A approved versions. These models feature an electropolished surface finish with lid wetted surfaces at Ra 0.4 µm. All models in the range are supplied with a 3.1 material certificate according to EN10204.

No, the Silicone (Q) seal material does not meet the GB 4806.16-2025 standard. Consequently, it cannot be used for applications within China. For Chinese installations, alternative FDA-compliant materials like EPDM, NBR, or FPM should be selected based on temperature requirements.

Yes, the LKD 532 x 432 flat lid variant is specifically designed for use on the bottom or side of tanks. It supports a maximum static pressure of 2.3 bar (230 kPa) and features a lid thickness of 10 mm. This makes it ideal for hygienic applications in the dairy, food, and personal care industries.

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