Toray TM820M-440 Seawater Reverse Osmosis Membrane Element
Toray's reverse osmosis elements use cross-linked fully aromatic polyamide composite membrane, manufactured under ISO 9001 for consistent quality and long membrane life. The TM820M-440 is built for reliable performance in seawater desalination and high-salinity water treatment.
📄 Download the Toray Product Datasheet (PDF)
Performance Specifications
| Specification | Value |
|---|---|
| Manufacturer | Toray Industries |
| Series | TM800M Series |
| Element Size | 8" x 40" |
| Membrane Type | Cross-linked fully aromatic polyamide composite |
| Active Membrane Area | 440 ft2 (41 m2) |
| Nominal Salt Rejection | 99.80% |
| Minimum Salt Rejection | 99.50% |
| Product Flow Rate | 7,700 gpd (29.2 m3/d) |
| Minimum Product Flow | 6,200 gpd (23.5 m3/d) |
| Boron Rejection | 95% at pH 8 (5 mg/L Boron added to feed water) |
| Feed Spacer | 28 mil |
| Shipping Weight | ~40 lbs (boxed) |
| Shipping Dimensions | 10" × 44" × 10" (boxed W × L × D) |
| HS Code (Tariff) | 8421.21.0000 — water filtering/purifying apparatus |
Operating & Limiting Conditions
| Parameter | Limit |
|---|---|
| Maximum Operating Pressure | 1,200 psi (8.3 MPa) |
| Maximum Feed Temperature | 113 F (45 C) |
| Maximum Feed Water SDI | 5 |
| Free Chlorine Tolerance | Not detectable |
| pH Range — Continuous | 2-11 |
| pH Range — Cleaning | 1-12 |
| Max Pressure Drop / Element | 15 psi (0.10 MPa) |
| Max Pressure Drop / Vessel | 50 psi (0.34 MPa) |
Physical Dimensions
| Dimension | Value |
|---|---|
| Overall Length | 40 in. (1,016 mm) |
| Diameter | 7.9 in. (201 mm) |
| Permeate Tube | 1.125 in. (29 mm) |
| Fits Pressure Vessel | nominal 8-inch I.D. |
Performance based on Toray standard test conditions: Feed water pressure 800 psi (5.52 MPa); Feed water temperature 77 F (25 C); Feed water concentration 32,000 mg/L as NaCl; Recovery rate 8%; Feed water pH 7. Individual element flow may vary. Reference: official Toray (water.toray) Product Data Sheet.
Typical Applications
- Seawater desalination
- High salinity feed water
- Industrial wastewater
- High recovery RO systems
- Seawater desalination (SWRO)
- High-salinity feed water
- Industrial wastewater treatment
- High-recovery RO systems
- Marine and offshore watermakers
Frequently Asked Questions
What is the Toray TM820M-440?
A 8" x 40" seawater reverse osmosis membrane element from Toray Industries, producing up to 7,700 gpd (29.2 m3/d) at 99.80% nominal salt rejection.
What is the product flow rate?
Up to 7,700 gpd (29.2 m3/d) at Toray standard test conditions (Feed water pressure 800 psi (5.52 MPa); Feed water temperature 77 F (25 C); Feed water concentration 32,000 mg/L as NaCl; Recovery rate 8%; Feed water pH 7).
What salt rejection does it achieve?
99.80% nominal, 99.50% minimum.
What pressure vessel does it fit?
A nominal 8-inch I.D. RO pressure vessel.
What is the price of the TM820M-440?
Contact ForeverPure at 408-969-2688 or sales@foreverpureplace.com for current pricing and availability.
