Product Description
Puri-guard® 4021 membrane is available in three types: BW, LE, and XLP, which are suitable for small commercial systems. Our 4021-type membrane's outer look includes FRP or tape wrapping according on the pressure used and the customer's request.
Advantages
- Maintains consistent high rejection and flow, with good performance.
- Innovative thin-layer and composite membrane design, available in both FRP and tape shell options.
- Small orders are accepted.
- We offer flexible dry or wet types, as well as OEM and ODM options.
product key technologies
Abundant experience to do best membrane sheet selection
Having been in membrane element line more than 10 years, and knowing requirements and target all over the world.
Membrane sheet is the key part of membrane element , which is the highest components refer to its quality.
Puri-guard, we always think quality first , choose the most suitable and right sheet & related parts, to roll under mature skill , to be high-level quality.
specific label design and membrane element package
Always, our concept is "Quality First , Trust as Basic , Service Creates Future ".
We take care of each business, whatever big or small , all we cherished . We believe our hard-working will finally reach the nice results of cooperation.
Becasue of this, except the key product quality , we also think of the label design and package OEM /ODM under best suitable support.
Applications
These 4021 membranes is suitable for residential reverse osmosis systems, schools and educational institutions, commercial establishments, such as restaurants, coffee shops, small-scale food and processing facilities, hospitals water systems, public water dispenser and so on.
☆ Users should be responsible for the effects of incompatible chemicals and lubricants on membrane components.
● Back pressure should be avoided at all times.
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|
Puri-guard® Element |
Permeate Flow GPD (m3/d) |
Testing Pressure |
Salt Rejection (%) |
Tested condition |
|
|
psi/MPa |
NaCl |
||||
|
BW-4021 |
950 (3.61) |
225/1.55 |
99.6-99.7 |
2000ppm |
|
|
LE-4021 |
950 (3.61) |
150/1.05 |
99.5 |
1000ppm |
|
|
XLP-4021 |
950 (3.61) |
100/0.69 |
99.2 |
500ppm |
|
1. Permeate flow and salt (NaCl) rejection based on the standard test conditions. 77°F (25°C), pH 7.5, 8% ± 1.0 recovery and the specified applied pressure.
2. Minimum salt rejection: 1% less of Salt rejection marked.
3. Single membrane element production flow may vary ±15%.
Operating limit
|
Diaphragm type |
Polyamide Composite Membrane |
|
Maximum operating temperature |
113℉ (45℃) |
|
Maximum operating pressure |
150 psi (10 bar) |
|
pH range, continuous operation |
3-10 a |
|
Maximum Influent SDI |
5 |
|
Free chlorine tolerance |
<0.1 ppm b |
a. When pH > 10, the maximum allowable temperature for continuous operation is 95℉ (35℃).
b. Under certain conditions, the presence of free chlorine and other oxidants will lead to premature failure of membranes. Therefore, it is recommended that the membrane be pretreated to remove residual free chlorine before water comes into contact with membranes.
|
Puri-guard® Element |
A (±2.0mm) |
B (±1.0mm) |
C1 (±1.0mm) |
C2 (±1.0mm) |
D (±0.1mm) |
|
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
|
|
4021 |
533 |
100 |
26.7 |
26.7 |
19. |
