MHA-8-40

Summary

Product identification

This overview details the MHA-8-40 series of medium pressure membrane housings designed for pressures up to 40 bar. These tubular pressure vessels feature collaring connections and are suitable for NF and RO filtration applications, particularly in the food and beverage industry for reducing microbials in liquid products like juice, beer, soy, whey, milk, milk powder, and chocolate.

The MHA-8-40 housings are designed to accommodate 7.9” x 38” (8038) membranes and are available in configurations from 1 to 6 elements. Two main connection arrangements are offered, designated as Model A or Model C, with other arrangements available upon request.

Operating limits

• Maximum Pressure: 40 barg
• Maximum Temperature: 70°C

Materials of construction

The membrane housing is constructed from EN 1.4404 (AISI 316L) stainless steel. It features a sanitary surface finish in accordance with the 3A sanitary standard.

• Inside Surface Roughness: ≤ 0.8 µm
• Outside Surface Roughness: ≤ 1.6 µm All fluid media must be compatible with EN 1.4404 (AISI 316L) Stainless steel.

Certifications and compliance

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 the European Parliament directive No. 2014/68/EU (Pressure Equipment Directive) for fluid group 2 (non-dangerous fluids)
• 3-A Sanitary Standards 00-01 / 45-03

Documentation

The following documentation is provided:

1. Customer drawing with description and design data table
2. Declaration of conformity
3. User Manual

As supplements, the following can be provided: 4. 3.1 material certificates according to EN 10204 5. Weld-logs with associated welding certificates according to DS/EN ISO 9601-1

Mechanical / hydraulic

The MHA-8-40 series membrane housings are designed for 7.9" diameter (8038) membrane elements. The internal diameter (ID) for membrane elements is Ø28.9.

Connections:

• Feed and Retentate: Collaring connections, with sizes including Ø63.5, Ø51, DN50, 2.5", and 2". These require weld ends with a minimum 6 mm wall thickness, with welds conforming to 3-A Sanitary Standards 00-01 and inside welds ground to ≤ 0.8 μm.
• Permeate: Clamp ferrule connections, with sizes including Ø38, Ø25, DN40, DN25, 1.5", and 1". An SH clamp is recommended.

Physical Characteristics (Approximate for various connection sizes):

• 1-element housing:
  • Volume: 40 liters
  • Dry weight: 42 kg
  • Total Length (TL): 1310 mm
  • Housing Length (HL): 1280 mm
  • Center Line Length (CL): 1080 mm
  • Inlet Length (IL): 1007-1013 mm
• 2-element housing:
  • Volume: 71 liters
  • Dry weight: 58 kg
  • Total Length (TL): 2290 mm
  • Housing Length (HL): 2260 mm
  • Center Line Length (CL): 2060 mm
  • Inlet Length (IL): 1987-1993 mm
• 3-element housing:
  • Volume: 103 liters
  • Dry weight: 74 kg
  • Total Length (TL): 3275 mm
  • Housing Length (HL): 3245 mm
  • Center Line Length (CL): 3045 mm
  • Inlet Length (IL): 2972-2978 mm
• 4-element housing:
  • Volume: 135 liters
  • Dry weight: 90 kg
  • Total Length (TL): 4255 mm
  • Housing Length (HL): 4225 mm
  • Center Line Length (CL): 4025 mm
  • Inlet Length (IL): 3952-3958 mm
• 5-element housing:
  • Volume: 167 liters
  • Dry weight: 106 kg
  • Total Length (TL): 5240 mm
  • Housing Length (HL): 5210 mm
  • Center Line Length (CL): 5010 mm
  • Inlet Length (IL): 4937-4943 mm
• 6-element housing:
  • Volume: 199 liters
  • Dry weight: 122 kg
  • Total Length (TL): 6220 mm
  • Housing Length (HL): 6190 mm
  • Center Line Length (CL): 5990 mm
  • Inlet Length (IL): 5917-5923 mm

Installation Recommendation: The Membrane Housing should be installed with the Retentate outlet at the highest point for better air venting.

Note on tabulated values: See the official PDF for exact tabulated values for specific models and connection sizes, including detailed dimensions (TL, HL, CL, IL) and stock numbers.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet