8 inch Stainless Steel Housings

Summary

Product identification

These are 8-inch side-entry stainless steel industrial membrane housings, designed for applications with RO/NF/UF machine assembly. Standard housing packages include:

• 804P-300 (300 psi)
• 804P-450 (450 psi)
• 804P-600 (600 psi)
• Customized options

Each standard package includes the housing body, end caps, load transfer device, closure devices, mounting saddles, and straps.

Features

• No seals involved in side port connections
• Unlike fiberglass, doesn't warp or weep
• Not affected by UV rays or sunlight
• Stainless steel is a preferred and universally accepted material for water systems
• Capable of supporting process piping
• During assembly, stainless housings are lighter and easier to handle than PVC and FRP housings with equivalent pressure ratings.

Materials of Construction

• Grade: 316L Stainless Steel
• Housing Body: 316/316L SS
• End Cap: 316 SS or Noryl
• Retaining Ring: 302 SS
• Support Straps: 304 SS
• Mounting Pads: Rubber
• O-ring: Buna-N
• Permeate Plug: Nylon
• Cap Screws: 18-8 SS
• 40” Closure Kits: Noryl (for 300 psi), Noryl and 316 SS (for 450 psi), 316 SS (for 600 psi)

End cap adapters are available for all major membrane element manufacturers.

Operating limits

• Design Pressure:
  • 804P – 300: 300 psi
  • 804P – 450: 450 psi
  • 804P – 600: 600 psi
• Operating Temperature Mix:
  • 804P – 300: 105°F (40.6°C)
  • 804P – 450: 105°F (40.6°C)
  • 804P – 600: 200°F (93°C)
• Tested at:
  • 804P – 300: 3 times design pressure
  • 804P – 450: 3 times design pressure
  • 804P – 600: 2.85 times design pressure
• Tested Cycles: 100,000 cycles at design pressure for all models.

Mechanical / hydraulic

• Side Ports: 2”, 3” and 4” port (Multi-port; 4 port standard)
• Exterior 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
• Design Options (End Caps):
  • Low Energy (LE): Made with Noryl end caps (for 300 & 450 psi)
  • High Pressure: Made with 316 stainless steel end caps (for 600 psi)
  • Sanitary: Made with polished 316 stainless steel end caps
• Element Capacity: 1 – 6 long for all models.

Housing Lengths (for 316SS):

• 1 – 8 x 40 Elements:
  • L Length: 52.1 inch (1323 mm)
  • P Port to Port: 42.7 inch (1085 mm)
  • S1 (2 Supports): 12.0 inch (305 mm)
  • Approximate Empty Weight: 75 lbs (34 kg)
• 2 – 8 x 40 Elements:
  • L Length: 92.1 inch (2339 mm)
  • P Port to Port: 82.2 inch (2103 mm)
  • S1 (2 Supports): 15.0 inch (381 mm)
  • Approximate Empty Weight: 106 lbs (48 kg)
• 3 – 8 x 40 Elements:
  • L Length: 132.2 inch (3358 mm)
  • P Port to Port: 122.8 inch (3119 mm)
  • S1 (2 Supports): 23.0 inch (584 mm)
  • Approximate Empty Weight: 138 lbs (62 kg)
• 4 – 8 x 40 Elements:
  • L Length: 172.2 inch (4374 mm)
  • P Port to Port: 162.9 inch (4138 mm)
  • S1 (2 Supports): 31.0 inch (787 mm)
  • Approximate Empty Weight: 169 lbs (76 kg)
• 5 – 8 x 40 Elements:
  • L Length: 212.3 inch (5392 mm)
  • P Port to Port: 202.9 inch (5154 mm)
  • S1 (2 Supports): 28.0 inch (711 mm)
  • S2 (3 Supports): 106.2 inch (2697 mm)
  • Approximate Empty Weight: 210 lbs (91 kg)
• 6 – 8 x 40 Elements:
  • L Length: 252.3 inch (6408 mm)
  • P Port to Port: 243.0 inch (6172 mm)
  • S1 (2 Supports): 34.0 inch (864 mm)
  • S2 (3 Supports): 126.2 inch (3205 mm)
  • Approximate Empty Weight: 232 lbs (105 kg)

"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 (i.e., use the two end supports only).

---

Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror