Bekaert OI8040Xm

Summary

Product identification

The BEKAERT Model OI8040Xm Pressure Vessel is designed for continuous use as housing for membrane filtration elements. It is an end-ported (OI) vessel.

The model naming convention is as follows:

• AA: Model of the Vessel (OI, SL, BK)
• XX: Diameter of the membrane (80 = 8”, 40 = 4”, 25 = 2.5”)
• XX: Length of the membrane in inches (e.g., 40 = 40”)
• X: Number of membranes
• X: Pressure identification (h = 1200 psi, a = 1000 psi, m = 600 psi, b = 400 psi, f = 250 psi)

For example, OI80403m is a vessel that houses 3 membranes of 8” in diameter, 40” in length, and operates under a pressure of 600 psi.

This model accommodates any make of eight-inch nominal diameter spiral-wound element, as well as many hollow fibre elements. The element interface hardware for the specified element is supplied with the vessel.

Operating limits

• Design Pressure at 120 °F (50°C): 600 PSI
• Factory Test Pressure: 900 PSI
• Burst Pressure: 3600 PSI
• Minimum Operating Temperature: 20°F (-7°C)
• Maximum Operating Temperature: 120°F (50°C)
• Operating pH Range: 3-11
• Cleaning pH Range: 2-12 (less than 30 minutes)
• Maximum Permeate Port Pressure: 125 psi (higher pressures require factory approval)
• The vessel is designed for positive pressure applications only and is not designed for vacuum conditions.

Feed water

• Application: Typical brackish waters
• Maximum Feed Water TDS: ≤10,000 ppm

Mechanical / hydraulic

• Construction Standard: Designed to meet the standards of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section X. ASME Code stamped vessels are available at an additional cost.
• Shell Material: Filament-wound reinforced plastic (glass fibre - epoxy resin)
• Head Materials:
  • Bearing Plate: Hard Anodized Aluminum 6061 T6 or 6082 T6
  • Feed Port: Stainless Steel 316L
• Standard Membrane Length: 40 inches
• Standard Membrane Diameter: 8 inches
• Expansion Under Pressure: The vessel must be allowed to expand under pressure.
  • ∆DIA = 0.012 in. (0.3 mm)
  • ∆L = 0.15 in. (4 mm) for a length code 8 vessel
• End Connections:
  • 1.5" VICTAULIC style 75 or equal fittings
  • 1" NPT
• Dimensions (mm, common for all models):
  • D = 221
  • A = 111
  • C = 120.5
  • E = 221
  • D' = 246
• Length Dimensions (L, L', S): Vary depending on the number of membranes (X in OI8040Xm). Vessels of 7 and 8 membranes are supplied with 3 supports, one being centered. See the official PDF for exact tabulated values for each model (OI80401m to OI80408m).
• Components and Materials: A detailed list of components and their materials (e.g., Outlet Adapter: PVC, Locking Ring Set: Stainless Steel 316L, O-Rings: EPDM) is provided in the OEM document.

Installation and Maintenance

The OEM document provides detailed procedures for head loading, head removal, and head rebuilding, including steps for inspection, lubrication, and reassembly of components.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet