Suez – RO Membranes – Duratherm STD RO8040

We ship to
Please login or register to see downloads


The Duratherm* STD Series is specifically designed to maximize the benefits of continuous high temperature operation as well as hot water sanitization for industries willing to maximize energy recovery and use hot purified water.
Separation system sanitization protocol is performed via periodic exposure to temperature as high as 90°C (194°F) at minimum feed pressure to kill microorganisms by denaturation and coagulation of the proteins chains.
The Duratherm STD are suitable for separation systems purifying water at temperature up to 70°C (158°F) in low crossflow environment and no suspended solids.
This Series includes a variety of size 8” and 4” diameters. All element constructions include Durasan* Cage outer wrap, Polysulfone ATD and central tube.

Operating Temperature : 41–122°F (5–50°C) – 122–158°F (50–70°C)
Typical Operating Flux 10-18 GFD (17-31LMH) – 10-18GFD (17-31LMH)
Max. Operating Pressure 600 psi (4,137 kPa) – 400psi (2,758kPa)
Recommended Crossflow:  STD 4040 Models: 20 GPM (4.5 m3/hr)
STD 8040 Models: 65 GPM (14.8 m3/hr)
Max. Pressure Drop: Over an element Per Housing: 15 psig (103kPa) 60 psig (414kPa) – 7.5 psig (51kPa) 30 psig (207kPa)
pH range: Continuous operation Clean-In-Place (CIP) 4.0-11.0 2 – 11.5  4.0-11.0 Not Allowed
Chlorine Tolerance 5,000 ppm-hours, dechlorination recommended
Feedwater NTU < 1  SDI 15 < 5



Looking for downloads for this product? Follow the two simple steps below.

Step 1
LoginorCreate Account
Step 2

View downloads!



Manufacturer Suez
Series Duratherm STD Series
Model Number Duratherm STD RO8040
Part Number 1228225
Description Average Permeate flow gpd (m3/day): 9,000 (34.1)
Average nacl Rejection: 99.5%
Active Area Ft2 (m2): 374 (34.9)
Outer Wrap: Cage
Maximum Operating Temp: 158°F (70°C)
Maximum Cleaning Temp: 122°F (50°C)
Maximum Sanitization Temp: 194°F (90°C)

Shipping Weight 35 Lbs (16 KG)
Overall Length 40.0 IN (101.6 CM)
Overall Height 7.9 IN (20.1 CM)
Notes CENTRAL TUBE: 1.125 IN (2.86 CM)

Click To Schedule a Service Call

Click To Schedule a Sales Call

Call for a FREE Quote Today

(855) 787-4200