TW30 2521 membrane Description

Puri-guard® XLP-2521 Reverse Osmosis Tap Water Membrane 2.5"X21" produces higher flow and greater salt rejection 99.2%, with 300-350GPD water filtration under standard test conditions as listed below.
It is for commercial system use and can be ordered with or without fiberglass material for a more attractive appearance.
And our BW-2521 can do Replacement for TW30 2521 of Dopunt brand to use.
Advantages of 2521
- higher rejection compare normal ones.
- Enhanced water production.
- Enery saving.
- Easy installation, good servicing, and OEM/ODM options are available.
feature
If feed water is good , then pretreatment will be very esily . As right side photo show.Making design based on its feed water and also usage .
High salt rejection: ≥99% for sodium chloride
Operating pressure: Optimized for energy-efficient operation at 100psiRecovery rate: Moderate, ~15–25% per element
Durability: Sensitive to chlorine; pre-treatment with carbon filter is required
At 100 psi, XLP-2521 is ideal for low TDS water. It cannot treat seawater or high-salinity brackish water effectively, because the driving pressure is too low for high salt rejection.

why choose us
Expertise That Delivers Pure performance

why choose our products
•Full Membrane Series Supply. We don't just supply but for all series membrane products , RO ,NF , UF and MBR.
•Built on Technology , Driven by Results. We are selecting the best suitable membrane products based on local real condition and requirements based on honest and sincerity ---for long-term cooperation. Quality always first for long-term partnerships.
•High-cost performance products but more heart-move service supply based on super quality concept.
•Flexible on OEM and ODM support.
•Fast delivery support.
FAQ
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|
Puri-guard® Element |
Permeate Flow GPD (m3/d) |
Testing Pressure |
Salt Rejection (%) |
Tested condition |
|
|
psi/MPa |
NaCl |
||||
|
2521-LP |
300 (1.14) |
225/1.55 |
99.6-99.7 |
2000ppm |
|
| 2521-ULP | 300(1.14) | 150/1.03 | 99.3-99.5 | 1000ppm | |
|
2521-XLP |
350 (1.33) |
100/0.69 |
98.5-99.2 |
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 ±20%. LP series may vary ±15%
Operating limit
|
Diaphragm type |
Polyamide Composite Membrane |
|
Maximum operating temperature |
113℉ (45℃) |
|
Maximum operating pressure |
600 psi (4.14 MPa) |
|
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) |
|
|
2521 |
533 |
61 |
30.2 |
30.2 |
19.1 |






