MHC-8-12

Summary

Product identification

This overview describes the Wila Membrane Housing, type 'MHC-8-12', designed for low-pressure applications up to 12 bar. These housings are utilized in the food and beverage industry for microfiltration (MF) and ultrafiltration (UF) systems, aiming to reduce or eliminate microbials and extend product shelf life. They are suitable for liquid-containing products such as juice, beer, soy, whey, milk, milk powder, and chocolate.

The membrane housing is a tubular pressure vessel featuring a single Feed inlet on the shell side, an unfiltered Retentate outlet also on the shell side, and a filtered Permeate outlet from one of the end centers. Membranes and Anti-Telescoping Devices (ATDs) are not included but can be supplied separately.

Operating limits

• Maximum Pressure: 12 barg
• Maximum Temperature: 70°C

Mechanical / hydraulic

• Construction Material: EN 1.4404 (AISI 316L) stainless steel. All fluid media used with the housing must be compatible with this material.
• Surface Finish:
  • Inside surface roughness: ≤ 0.8 µm
  • Outside surface roughness: ≤ 1.6 µm
• Compatible Membrane Elements: Designed for 7.9" x 38" (8038) membrane elements. The housing can accommodate from 1 to 6 elements.
• Connections:
  • Tri-clamp connections are used for Feed, Retentate, and Permeate.
  • Feed and Retentate clamp ferrule connections (YY): Available in sizes including Ø76, Ø63.5, Ø51 (in accordance with ISO 2852-2) and DN50, DN40 (in accordance with DIN 32676-A).
  • Permeate end clamp ferrule connection (ZZ): Available in sizes including Ø38, Ø25 (in accordance with ISO 2852-2) and DN40, DN25 (in accordance with DIN 32676-A).
  • SH clamps are recommended for 12 bar pressure rating.
  • The Membrane Housing should be installed with the Retentate outlet at the highest point for proper air venting.
• Typical Physical Characteristics:
  • Permeate ID: Ø28.9 mm
  • Volume and Dry Weight (varies by number of elements):
    • 1-element: 41 liters, 30 kg
    • 2-elements: 72 liters, 42 kg
    • 3-elements: 104 liters, 53 kg
    • 4-elements: 136 liters, 64 kg
    • 5-elements: 168 liters, 76 kg
    • 6-elements: 200 liters, 88 kg
• Dimensions: Exact dimensions (TL, HL, CL, IL) vary based on the number of elements and connection types. See the official PDF for exact tabulated values.

Regulations and directives

The membrane housing is designed and manufactured in accordance with:

• European Commission regulation No. 2023/2006 (Good Manufacturing Practices)
• European Parliament directive No. EN 1935/2004 (Food Contact Materials)
• European Parliament directive No. EN 1907/2006 (Chemical Restrictions (REACH))
• PED - Article 4.3 (SEP) in European Parliament directive No. 2014/68/EU (Pressure Equipment Directive), designed for fluid group 2 (non-dangerous fluids).

Documentation

Standard documentation provided includes:

• Customer drawing with description and design data table
• Declaration of conformity
• User Manual As a supplement, the following can be provided:
• 3.1 material certificates according to EN 10204
• Weld-logs with associated welding certificates according to DS/EN ISO 9601-1

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Disclaimer: This summary is generated from an extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. For contractual data and complete specifications, the relevant OEM PDF revision used on the project must be consulted.

Official datasheet (PDF)

PDF datasheet