Bekaert OI8040Xb

Summary

Product identification

The BEKAERT Model OI8040Xb Pressure Vessel is designed for continuous use as housing for membrane filtration elements to purify typical brackish waters. It 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.

The Model OI8040Xb has been designed to meet the standards of the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code, Section X. At an additional cost, vessels can be inspected during fabrication by an ASME Authorized Inspector and Code stamped.

The model-numbering follows this structure:

• 1: Model of the Vessel (OI, SL, BK)
• 2: Diameter of the membrane (80 = 8”, 40 = 4”, 25 = 2.5”)
• 3: Length of the membrane in inches (e.g., 40 for 40")
• 4: Number of membranes (e.g., 3 for 3 membranes)
• 5: Pressure identifications: h (1200 psi), a (1000 psi), m (600 psi), b (400 psi), f (250 psi)

For example, OI80403m is a vessel, OI (end-ported), used to house 3 membranes of 8” in diameter, 40” in length and operating under a pressure of 600 psi. The Model OI8040Xb specifically indicates a 400 psi rating.

Operating limits

• Design Pressure at 120 °F (50°C): 400 PSI
• Operating pH Range: 3-11
• Minimum Operating Temp. : 20°F (-7°C)
• Cleaning pH Range: 2-12 (less than 30 minutes)
• Maximum Operating Temp. : 120°F (50°C)
• Factory Test Pressure: 600 PSI
• Burst Pressure: 2400 PSI
• Permeate Port Pressure: Do not operate over 125 psi. Permeate pressure in excess of 125 psi must be approved by the factory prior to operation.

Feed water

• Application: Typical brackish waters
• Feedwaters TDS: ≤10,000 ppm MAX

Mechanical / hydraulic

• Vessel Type: Filament-wound reinforced plastic shell.
• Membrane Compatibility: Accommodates 8-inch nominal diameter spiral-wound elements and many hollow fibre elements.
• Standard Membrane Length: 40"
• Standard Membrane Diameter: 8"
• Expansion Under Pressure (for length code 8 vessel):
  • ∆DIA = 0.012 in. (0.3 mm)
  • ∆L = 0.15 in. (4 mm)
• Connections:
  • Use flexible type groove-end pipe couplings.
  • Victaulic™ style 75 or equal fittings at each port.
  • Allow a full 0.125 gap between each port/manifold connection.
  • Feed/Permeate connections: 1.5" VICTAULIC, 1" NPT.
• Supports: Vessels for 7 and 8 membranes are supplied with 3 supports, being centered one of them.
• Overpressure Protection: Set safety device at not more than 105% design pressure.
• Materials of Construction:
  • Shell: Glass fibre - epoxy resin
  • Head Bearing Plate: Hard Anodized Aluminum 6061 T6 or 6082 T6
  • Feed Port: Stainless Steel 316L
  • Outlet Adapter: PVC
  • Membrane adapter: Thermoplastic (PET)
  • Sealing Plate: PVC (grey)
  • Port Nut: PVC
  • Port Retainer Set: Stainless Steel 316L
  • Securing Ring: Epoxy-Glass
  • Strap: Stainless Steel 304
  • Saddle: Polyurethane
  • Locking Ring Set: Stainless Steel 316L
  • Thrust Ring: Polyamide
  • O-Rings (various): EPDM
  • Securing Screw: St Steel DIN 912 M8 x 20
  • Head seal: EPDM
• Models and Dimensions (in mm):
  • OI80401b
  • OI80402b
  • OI80403b
  • OI80404b
  • OI80405b
  • OI80406b
  • OI80407b
  • OI80408b
  • See the official PDF for exact tabulated values for L, L', S, D, A, C, E, D' dimensions.

Disclaimer

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

Official datasheet (PDF)

PDF datasheet