VNF2 8040

Summary

Product identification

• Model: VNF2-8040
• Series: VNF Series
• Type: Water Treatment Nanofiltration Membrane Element
• Applications:
  • Purification of drinking water and industrial water
  • Treatment of wastewater
  • Deep purification of drinking water (e.g., direct drinking water, packaging water, food water)

Product water

• Model: VNF2-8040
• Stable Rejection Rate: 97.0% (based on 2000 mg/L MgSO₄ solution)
• Permeate Flow: 10500 GPD (39.7 m³/d)
  • Note: Each membrane element may have ±20% variation of permeate flow.
• Test Conditions:
  • Operating pressure: 100 psi (0.69 MPa)
  • MgSO₄ solution concentration: 2000 mg/L
  • Temperature: 25 ℃
  • pH: 7.0 ± 0.5
  • Recovery rate: 15%
• First Use: Permeate water and concentrated water within the first hour of initial operation must be discharged.

Operating limits

• Maximum operating pressure: 600 psi (4.14 MPa)
• Maximum feedwater temperature: 45 ℃
• Maximum inlet flow rate: 17 m³/h
• Maximum concentration of free chlorine: 0.1 mg/L
• 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

Mechanical / hydraulic

• Active Membrane Area: 400 ft² (37.2 m²)
• Feed Spacer Thickness: 28 mil
• Packing Carton Dimensions (L:W:H): 1080×216×232 mm
• Connector Material Number: 3.02.09.0006

Important information

• Preservation Solution:
  • Dry membrane elements are shipped without preservation solution.
  • Wet membrane elements are shipped with 1.0% sodium bisulfite (with 10% propylene glycol antifreeze added in winter).
• Storage:
  • Dry membrane elements must always be maintained wet after soaking.
  • Wet membrane elements require preservation solution if not used for a long time.
• Initial Operation Flush:
  • Recommended to flush for 15-25 minutes at low pressure (not suitable for soaking overnight).
  • Follow with a flush for 60-90 minutes at high pressure (water flow should not be less than 50% of the system design water flow).
• Chemicals: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited. Vontron Technology will not be liable for consequences arising from the use of such chemicals.
• Warranty: The operating limits and operational guidelines provided are part of the limitations for the three-year membrane element warranty.
• Further Details: Refer to the Product Manual for comprehensive details on installation, commissioning, storage, and transportation of membrane elements.

---

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

Official datasheet (PDF)

PDF datasheet