Ultra Low Pressure and Extreme Low Pressure Commercial RO Membrane Element

Model No.：XLP-4021/2540/2521, ULP-4021/2540/2521, BW-4021/2540/2521, SW- ULP-4021/2540/2521

Usage: It is applicable to the small pure water system, such as automatic water dispenser in residential area and school, direct drinking equipment in office, pure water machine in medical laboratory and small sized sea water desalination.

Features: High rejection rate and low working pressure.

Specifications:

Model	Active Membrane Area ft²(m²)	Permeate Flow GPD(T/D)	Stable Rejection Rate (%)
XLP-4021	36(3.4)	800(3.04)	99.2
XLP-2540	27(2.5)	600(2.27	99.2
XLP-2521	14(1.3	300(1.13	99.2
ULP-4021	36(3.4)	950(3.6)	99.3
ULP-2540	27(2.5)	750(2.84)	99.3
ULP-2521	14(1.3)	400(1.51)	99.3
BW-4021	36(3.4)	1000(3.8)	99.6
BW-2540	27(2.5)	800(3.04)	99.6
BW-2521	14(1.3)	350(1.32)	99.6
SW-4021	36(3.4)	800(3.04)	99.7
SW-2540	27(2.5)	600(2.27)	99.7
SW-2521	14(1.3)	300(1.13)	99.7

Standard Test condition:

Concentration of Solution

(NaCl)

Temperature （℃）

pH Value

Operating Pressure psi(MPa)

Recovery Rate

（%）

1500ppm ( For ULP series)

500ppm ((For XLP series)

2000ppm (For BW Series)

32000ppm(For SW Series)

7.5-8

ULP:150(1.03)

XLP:100(0.69)

BW/225(1.55)

SW/800(5.5)

15(2540)

8（4021/2521）

8 (SW)

Notes: The permeate flow of single membrane element may vary with in ±15%.

Operating Limits and Conditions of commercial ro Membrane Element

Max.Working Pressure	600 psi(4.14MPa)/XLP,ULP,BW 1200psi(8.3Mpa)
Max. Feed Water Temperature	45 ℃
Max. Feed Water Flow	3.6m³/h（4021）, 1.4m³/h（2540 / 2521）
Max. Feed Water SDI₁₅	5.0
Free Chlorine Concentration of Feed Water	0.1mg/L
pH Range of Feed Water During Continuous Operation	3-10
pH Range of Feed Water During Chemical Cleaning	2-12
Max. Pressure Drop of Single Membrane Element	10psi(0.07Mpa)