MHCA-8-12

Summary

Product Identification

This document provides a detailed overview for Wila Membrane Housings, specifically the MHCA-8-12 type, designed for low-pressure applications up to 12 bar. These housings are used in the food and beverage industry for MF (Microfiltration) and UF (Ultrafiltration) 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 on the shell side, and a filtered Permeate outlet from one of the end centers. Membranes and ATD's (Anti-Telescoping Devices) are not included but can be supplied separately.

Operating Limits

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

Mechanical / Hydraulic

• Material: EN 1.4404 (AISI 316L) stainless steel
• Surface Finish:
  • Inside: ≤ 0.8 µm (sanitary)
  • Outside: ≤ 1.6 µm
• Element Compatibility: Designed for 7.9" x 38" (8038) membranes.
• Permeate Internal Diameter (ID): Ø28.9 mm
• Maximum Housing Diameter: Ø249 mm (overall)
• Number of Elements: From 1 to 6 elements
• Flow Direction: Indicated by an arrow on the drawing
• Connections: Tri-clamp connections for Feed, Retentate, and Permeate. SH clamps are recommended for 12 bar pressure rating. The Retentate outlet should be at the highest point for air venting.
  • Feed and Retentate Clamp Ferrule Connections (YY):
    • ISO 2852-2: Ø76, Ø63.5, Ø51, Ø38, Ø25
    • DIN 32676-A: DN65, DN50, DN40, DN25
    • DIN 32676-C: 3", 2.5”, 2”, 1.5”
  • Permeate End Clamp Ferrule Connection (ZZ):
    • ISO 2852-2: Ø38, Ø25
    • DIN 32676-A: DN40, DN25
    • DIN 32676-C: 1.5", 1.0”
  • See the official PDF for exact tabulated values for specific model connection sizes.
• Volume and Dry Weight (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
• Housing Dimensions (all dimensions in millimeters):
  • 1-element:
    • Total Length (TL): 1380
    • Housing Length (HL): 1309
    • Clamp Length (CL): 1095
    • Inside Length (IL): 1007 - 1019
  • 2-elements:
    • Total Length (TL): 2360
    • Housing Length (HL): 2289
    • Clamp Length (CL): 2075
    • Inside Length (IL): 1987 - 1999
  • 3-elements:
    • Total Length (TL): 3345
    • Housing Length (HL): 3274
    • Clamp Length (CL): 3060
    • Inside Length (IL): 2972 - 2984
  • 4-elements:
    • Total Length (TL): 4325
    • Housing Length (HL): 4254
    • Clamp Length (CL): 4040
    • Inside Length (IL): 3952 - 3964
  • 5-elements:
    • Total Length (TL): 5310
    • Housing Length (HL): 5239
    • Clamp Length (CL): 5025
    • Inside Length (IL): 4937 - 4949
  • 6-elements:
    • Total Length (TL): 6290
    • Housing Length (HL): 6219
    • Clamp Length (CL): 6005
    • Inside Length (IL): 5917 - 5929
  • Dimensions for Feed/Retentate end fitting length (165 mm), Permeate end fitting length (133 mm), and a smaller diameter (55 mm) are also shown in diagrams.

Compliance and Documentation

• Regulations and Directives:
  • 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)
  • 3-A Sanitary Standards 00-01 / 45-03
• Standard Documentation Provided:
  • Customer drawing with description and design data table
  • Declaration of conformity
  • User Manual
• Supplemental Documentation (Upon Request):
  • 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 extracted text and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the official OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet