VUF8040 20K 31F

Summary

Product Identification

The VUF8040-20K/31F is a spiral-wound ultrafiltration membrane element from the Vontron VUF series.

It is designed for the separation and concentration of specific materials with a Molecular Weight Cut-Off (MWCO) at 4k, 6k, 8k, 10k, 20k, or 67k Da. Common applications include:

• Screening and separation of organic substances
• Food processing
• Bioengineering and other industries

The VUF series uses feed channel spacers of 31, 46, and 90 mil, and can be equipped with fiberglass or sanitary-grade housings.

Product Performance

Model: VUF8040-20K/31F

• MWCO: 20000 Da
• Permeate Flow: 10500 GPD (39.7 m³/d)
• Active Membrane Area: 400 ft² (37.2 m²)
• Feed Spacer Thickness: 31 mil

Note: Performance is tested under specific conditions:

• 1000 mg/L solution of PEG20000
• Operating pressure: 40 psi (0.28 MPa)
• Temperature: 25℃
• Recovery rate: 15%

Each membrane element may have a ±20% variation in permeate flow.

Operating Limits

• Maximum operating pressure: 300 psi (2.07 MPa)
• Maximum feedwater temperature: 40 ℃
• Maximum inlet flow rate: 19 m³/h
• Maximum concentration of free chlorine: ——
• Maximum pressure drop per element: 15 psi (0.1 MPa)
• Allowed pH range for feedwater in operation: 3-10
• Allowed pH range for chemical cleaning: 2-12
• Maximum feedwater SDI₁₅: 5

Preservation and Initial Operation

• Preservation Solution:
  • Dry membrane elements leave the factory without preservation solution.
  • Wet membrane elements contain 1.0% sodium bisulfite (NaHSO₃) as a preservation solution. In winter, 10% propylene glycol antifreeze is added.
  • Elements are stored in vacuum packaging.
• Dry membrane elements must be kept wet after initial soaking.
• Wet membrane elements not in use for a long time require a preservation solution soak.
• Initial Flushing:
  • For first-time use, flush at low pressure for 15-25 minutes (do not soak overnight).
  • Then, flush at high pressure for 60-90 minutes (water flow should not be less than 50% of the system design flow).
  • The permeate and concentrated water from the first hour of operation must be discharged.

Mechanical Data

• Packing Carton (L:W:H): 1080×216×232 mm
• Connector material number: 3.02.09.0002

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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 for project use must match the specific OEM PDF revision.

Official datasheet (PDF)

PDF datasheet