Summary

4'' END PORT PRESSURE VESSEL Technical Manual

This technical manual, 1st Edition January 2016, describes BEL 4-inch end-port pressure vessels. BEL specializes in the design and manufacture of composite products, utilizing filament wound fiber-reinforced plastic (FRP) with a superior epoxy resin. Vessels are tested according to ASME code section X and the company holds ISO 9001 certification.

Product Identification

BEL pressure vessels are designed as housings for spiral-wound Reverse Osmosis (RO), Nanofiltration (NF), and Ultrafiltration (UF) membrane elements. This manual specifically details 4-inch end port vessels with varying pressure ratings.

Supported membrane element configurations:

• 1 to 6 elements for 40" membrane length
• 1 to 12 elements for 21" membrane length

The pressure vessels are available in the following end port configurations:

• BEL 4" Pressure vessel 300 psi. End Port type.
• BEL 4" Pressure vessel 450 psi. End Port type.
• BEL 4" Pressure vessel 600 psi. End Port type.
• BEL 4" Pressure vessel 1000 psi. End Port type.
• BEL 4" Pressure vessel 1200 psi. End Port type.

Permeate tube diameter: Ø 0.75"

Operating Limits

• Permeate port pressure: MUST NOT EXCEED 125 psi (8.6 bar)
• Operating temperature: NOT BE OPERATED AT TEMPERATURES ABOVE 49° C (120°F)
• Operation outside these limits voids the warranty and may cause vessel fatigue or explosive head failure.
• Long-term operation above design pressure must be prevented.

Mechanical / Hydraulic

Construction Materials:

• Body of Pressure vessel: Glass / Epoxy
• Retaining ring, Strap assy., Retaining ring for E. port, Retaining ring P. port: 316 Stainless steel
• Base plate, Seal for Base plate, Seal for Adapter, Disk spacer, Adapter for Ø 0.75", Membrane seal for Ø 0.75", Saddle, Sealing plate, Seal for S. plate, Seal for P. port, Permeate port: Engineering plastic, EPDM
• End port for 300/450/600 psi vessels: 316 Stainless steel
• End port for 1000/1200 psi vessels: Super Duplex Stainless steel
• Support ring: Aluminum (for 600/1000/1200 psi vessels)

Installation Notes:

• Vessels should be installed horizontally on support saddles.
• Mounting design must allow for both radial (up to 0.5 mm) and axial (up to 2-3 mm) expansion.
• Mounting bolts for straps should be tightened with 2-3 Nm torque.
• Flexible piping connections are required to prevent load transfer and allow movement. Recommended permeate port connection is a U-bend pipe with flexible connections. Victaulic or equivalent connections are recommended.
• Maximum angle for end port connection: 2.5°
• Maximum offset for end port connection: 2 mm
• Spacing for end port connection: 1.6 mm (X)

Maintenance:

• Requires qualified mechanics experienced in high-pressure hydraulic systems.
• System must be fully depressurized before service.
• Regular inspection for deterioration, damage, corrosion, and leaks is required.
• Special tools (puller and pusher) are designed for head extraction and installation.
  • Puller part numbers: 069-040-1200 (for 600/1000/1200 psi), 069-080-0450 (for 300/450 psi).
  • Pusher for 4" vessels: Can be a plastic (PVC, PP, etc.) pipe with O.D.= 100 mm, I.D.=80 mm, Length=150 mm.
• O-ring seals should be lubricated (Molykote 111 or Glycerin) and are highly recommended to be replaced each time the head is reassembled.
• Shimming procedures are used on the feed side to minimize adapter and membrane element movement, especially for vessels containing 3 or more membranes.

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. For contractual data and complete product information, the specific OEM PDF revision used on the project must be consulted.

Official datasheet (PDF)

PDF datasheet