Specification

Model

Effective Membrane Area

(ft² / m²)

Daily Water Production

(GPD / m³/d)

Stable Salt Rejection Rate

(%)

Operating Pressure

(PSI)

YIME-LP-PW-8040

400 (37.2)

11000 (41.6)

99.5

150

YIME-LP-PW-4040

85 (7.9)

2400 (9.8)

99.5

150

Standard Testing Conditions

Test Feed Water	Test Temperature(℃)	pH Value	Recovery Rate (%)	Maximum Feed Water SDI
2000 PPM(Nacl)	25±5	7.5～8	15±5	5

Feature

The low-pressure membrane system operates at a lower pressure and offers higher energy efficiency, significantly reducing energy consumption and operational costs compared to traditional high-pressure membrane technologies (such as reverse osmosis).
Low-pressure membranes can effectively remove suspended solids, bacteria, viruses, and other harmful substances from water, ensuring water quality safety.
The operation and maintenance of the membrane system are relatively simple, requiring no complex chemicals or expensive equipment.
RO membrane elements are high water flux and high salt rejection rate under lower operating pressure conditions

Applications

Municipal drinking water
High-grade industrial water
Reclaimed water
Seawater desalination
Reverse osmosis pretreatment

RO Menbrane Elements Operating Limits and Conditions

Production floating range	±15%
Maximum feed water temperature	45℃
Maximum feed water SDI15	5
Maximum influent turbidity NTU	1
Maximum residual chlorine concentration	0.1mg/L
Maximum Operating pressure	600psi(4.14Mpa)
Maximum pressure drop of single membrane element	15psi(0.1Mpa)
PH value range of feed water during continuous operation	3~11
PH value range of feed water during chemical cleaning	2 ~12
Maximum feed water flux	17 m³/h (Model: 8040)

Drawing Sizes of Low pressure membrane

Installation of Reverse Osmosis Membrane Elements

Carefully remove the industrial reverse osmosis membrane from the package and check that the brine seal ring on the industrial reverse osmosis membrane or the small arrow on it is in the correct position and orientation.
Push one end of the industrial reverse osmosis membrane, without the brine seal, through the inlet end of the pressure vessel until the membrane element is exposed about 30 cm outside the inlet end of the pressure vessel. Lubricate the brine seal.
Take the second industrial reverse osmosis membrane out of the package, ensuring that the "O" ring on the permeate end of the membrane does not fall off. Align the end of the reverse osmosis membrane without the sealing ring with the first element (fix the first branch of the RO reverse osmosis membrane). Rotate it to the right so that the two marks on the end face become a straight line. When a "click" sound is heard, it means that the two membrane elements are fixed together. Push the second element into the pressure vessel until it is exposed about 30 cm outside the inlet end. Install other components in the same way.
Install a thrust ring at the concentrate end of the pressure vessel to prevent the reverse osmosis membrane from being over-squeezed and damaged.
When installing the end cap, carefully inspect the "O" ring of the component adapter. Apply lubricant, then insert the adapter into the concentrate end plate and connect it to the external pipe. To make the connection, carefully place the end plate on the purge end of the pressure vessel and align the concentrate end plate assembly with the assembly fitting. Press it parallel to the pressure vessel.
Rotate the concentrate end plate assembly to adjust it to fit the external connecting tubing.
Install the end plate snap rings or screws according to the pressure vessel manufacturer's schematics.
Push the RO membrane from the feed side to the retentate side until the first installed RO membrane is in firm contact with the retentate end plate.
Repeat the above steps to connect the reverse osmosis membranes to each pressure vessel and connect all external water inlets, concentrate, and water generation pipes.