4 inch Stainless Steel Housings

Summary

Product identification

Veolia’s Stainless Steel Membrane Housings are 4-inch side entry designs, combining rugged construction with over 30 years of experience in RO/NF/UF machine assembly applications.

Key features include:

• Mechanical Coupling Closure: A single-piece end cap secured with a mechanical coupling (Victaulic closure system) using a single gasket. This design eliminates O-ring issues from grooves or holes and allows quick membrane element changes without special tools.
• 4-Port Design: Utilizes four side ports, eliminating high-pressure interconnecting manifolding, which reduces fabrication time and overall assembly costs. Interstage port plugs enable superior performance in any array scheme, including two-pass systems.
• Stainless Steel Advantages:
  • No seals involved in side port connections.
  • Does not warp or weep, unlike fiberglass.
  • Unaffected by UV rays or sunlight.
  • Universally accepted material for water systems.
  • Can withstand high temperatures, up to 200°F (93°C) for supporting process piping.
  • Lighter and easier to handle during assembly than PVC and FRP housings with equivalent pressure ratings.

Operating limits

• Design Pressure: 500 psi
• Tested Pressure: Tested at 3 times design pressure
• Tested Cycles: 100,000 cycles at design pressure
• Maximum Operating Temperature:
  • 105°F (40.6°C) for models like 402P-500, 404P-500
  • 200°F (93.3°C) for models like 402P-500-TC

Mechanical / hydraulic

Materials of Construction (500 psi)

• End Cap: 316 SS or Noryl (GFN)
• Victaulic Coupling: Galvanized Steel
• Coupling Gasket: EPDM
• Support Straps: 304 SS
• Mounting Pads: Rubber
• O-ring: Buna-N
• Housing Body: 316/316L
• Permeate Plug: SS Nylon

Available Options

• Grade: 316L Stainless Steel
• Side Ports:
  • 3/4", 1-1/4", and 1-1/2"-inch port
  • Multi-port; (2 & 4 port standard)
• Closure: Tri-clamp (optional; Victaulic standard)
• Finishes:
  • Original steel mill finish (standard)
  • Painted with acrylic polyurethane paint in most colors (e.g., bright aluminum)
  • Electro-polished for a glossy, shiny, metallic look
  • Mechanical polished (180 grit), inside diameter and/or outside diameter
• Design Options:
  • Low pressure made with Noryl end caps (500 psi)
  • High pressure made with 316 stainless steel end caps (1,000 psi)
  • Sanitary made with polished 316 stainless steel end caps

Permeate Port Standard

• 0.75-inch (13 mm) FNPT (for 1–3 long housings)
• 1.25-inch (31.75 mm) Victaulic (for 3–6 long housings)
• 1.5-inch (38 mm) Tri-Clamp (optional)

Specific Model Specifications

• Element Capacity:
  • 1–3 longs (for model 402P-500)
  • 2–6 longs (for models 404P-500, 402P-500-TC)
• Number of Ports:
  • 2 (for models 402P-500, 402P-500-TC)
  • 4 (for model 404P-500)
• Port Size/Connection:
  • ¾” FNPT (for model 402P-500)
  • 1-¼” Victaulic (for model 404P-500)
  • 1-½” Tri-Clamp (for model 402P-500-TC)
• Closure Kits:
  • Noryl (for model 402P-500)
  • 316 SS (for models 404P-500, 402P-500-TC)

Housing Lengths and Weights Add 2-inches (51 mm) to the overall length, dimension A, to include the end caps with the housing length. The S1 and S2 dimensions are the recommended housing support locations measured from each end of the housing. If there is no S2 dimension, then no middle support is required (use the two end supports only). The two-port configuration is standard; four-port configuration is also available.

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Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions of the OEM datasheet. For contractual purposes, please refer to the official OEM PDF document revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror