Bekaert OI8040Xa

Summary

Product identification

The BEKAERT Model OI8040Xa Pressure Vessel is designed for continuous use as housing for membrane filtration elements. It is intended to purify typical brackish waters at any positive pressure up to 1000 PSI.

The OI8040Xa accommodates any make of eight-inch nominal diameter spiral-wound element, as well as many hollow fibre elements. Element interface hardware for the specified element is supplied with the vessel.

The Model OI8040Xa 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.

Identification Code: The model-numbering is built up as follows: AA XX XX X a

1. AA: Model of the Vessel (OI, SL, BK). OI indicates end-ported.
2. XX: Diameter of the membrane (80 = 8”, 40 = 4”, 25 = 2.5”).
3. XX: Length of the membrane in inches.
4. X: Number of membranes.
5. a: Pressure identification (h = 1200 psi, a = 1000 psi, m = 600 psi, b = 400 psi, f = 250 psi).

For example, OI80403m is a vessel, end-ported, used to house 3 membranes of 8” in diameter, 40” in length, and operating under a pressure of 600 psi.

Operating limits

• DESIGN PRESSURE AT 120 °F (50°C): 1000 PSI
• OPERATING pH RANGE: 3-11
• MINIMUM OPERATING TEMP.: 20°F (-7°C)
• CLEANING pH RANGE (less than 30 minutes): 2-12
• MAXIMUM OPERATING TEMP.: 120°F (50°C)
• FACTORY TEST PRESSURE: 1500 PSI
• BURST PRESSURE: 6000 PSI
• Permeate Port Operating Pressure: Do not operate over 125 psi. Permeate pressure in excess of 125 psi must be approved by the factory prior to operation.
• Operate the vessel in only positive pressure applications. This vessel is not designed for vacuum conditions.

Feed water

• APPLICATION: Seawater
• FEEDWATERS TDS: ≤10,000 ppm MAX
• Intended for purifying typical brackish waters.
• Flushing with non-corrosive permeate is recommended before system shut down as some feed waters may cause corrosion under static conditions.

Mechanical / hydraulic

• Standard membrane length: 40"
• Standard membrane diameter: 8"
• Shell expansion under pressure: ∆DIA = 0.012 in. (0.3 mm) and ∆L = 0.15 in. (4 mm) for a length code 8 vessel.
• Connections: Use flexible type groove-end pipe couplings. Using Victaulic™ style 75 or equal fittings at each port, allow a full .125 gap between each port/manifold connection.
• Overpressure protection: Set the safety device at not more than 105% design pressure.

Approximate Vessel Dimensions (in mm) For reference only, not to be used for construction unless certified.

• Vessels of 7 and 8 membranes are supplied with 3 supports, one of which is centered.
• L’ – 5, 32, 1.5" VICTAULIC, 63.5, 1" NPT, 65.1, 89.6, 82.8, 276.1
• D=228.5–0.5
• 202 – 0.1
• D’ = 258
• C, A, E
• L – 3, S

Materials of Construction

• Shell: Roving-Epoxy (Glass fibre - epoxy resin)
• Bearing Plate: Hard Anodized Al 6061T6 or 6082 T6
• Outlet Adapter: PVC
• Membrane Adapter: Thermoplastic (PET)
• Sealing Plate: PVC (grey)
• Port Nut: PVC
• Port Retainer Set: Stainless Steel 316L
• Feed Port: Stainless Steel S32750 or 31254 SMO (SA 312, UNS S31254 or SA790; UNS S32750)
• Securing Ring: Epoxy-Glass
• Strap: Stainless Steel 304
• Saddle: Polyurethane
• Locking Ring Set: Stainless Steel 316L
• Thrust Ring: Polyamide
• Head Lock Groove: Stainless Steel 316L
• O-Ring 36: EPDM
• Securing Screw: Stainless Steel DIN 912 M8 x 20
• Head seal: EPDM
• O-Ring 49: EPDM
• O-Ring 23.5: EPDM
• O-Ring 47: EPDM

Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions of the OEM PDF datasheet. For contractual data and complete information, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet