HJC ES Series Industrial RO Membranes: SMART VALUE. HIGH FLOW.

2026-10-23

Water reuse is an important consideration for water-intensive industries, including textile manufacturing. In denim production, washing processes require substantial amounts of water. Treating wastewater for reuse can help reduce freshwater demand, provided the treated water meets the requirements of its intended application.

High Flow. Cost Efficiency. Reliable RO Performance.

The HJC ES Series is designed for conventional industrial reverse osmosis (RO) applications that require dependable water production and practical operating economics. Available in three 4-inch models, the series offers different operating pressure and salt rejection profiles to meet varying feedwater conditions and system requirements.

With a thin-film composite (TFC) membrane structure, the ES Series selectively removes dissolved salts and other impurities, helping reduce permeate TDS and provide purified water for downstream industrial processes.

Key Advantages

1. High Permeate Flow

Designed to deliver practical water production capacity for industrial RO systems, helping meet daily water demand and supporting efficient system configuration.

2. Cost-Efficient Solution

A value-oriented option for conventional industrial water treatment, balancing membrane performance with initial investment and replacement cost considerations.

3. Reliable Salt Rejection

The selective polyamide membrane layer helps reduce dissolved salts and permeate TDS, supporting the water quality requirements of different industrial applications.

4. Three Models for Different Operating Conditions

The ES Series includes ultra-low-pressure, extremely-low-pressure, and low-pressure options, giving system designers greater flexibility when selecting a membrane for their feedwater quality and operating pressure requirements.

Three Models. Flexible Selection.

BW-RU4040 ES — Ultra-Low-Pressure RO Membrane

Designed for applications requiring high permeate flow under ultra-low-pressure operating conditions.

Permeate flow: Up to 2,700 GPD

Stable salt rejection: 99.3%

Operating pressure: 150 psi

BW-RU4040 ES

BW-RX4040 ES — Extremely-Low-Pressure RO Membrane

Designed for applications using lower-salinity feedwater where extremely low operating pressure is a key consideration.

Permeate flow: Up to 2,700 GPD

Stable salt rejection: 98.0%

Operating pressure: 100 psi

BW-RX4040 ES

BW-RL4040 ES — Low-Pressure RO Membrane

Designed for applications requiring higher salt rejection under low-pressure operating conditions.

Permeate flow: Up to 2,400 GPD

Stable salt rejection: 99.7%

Operating pressure: 225 psi

Performance figures are based on specified test conditions. Actual performance varies with feedwater quality, temperature, pressure, recovery rate, and system design.

Applications

The 4-inch HJC ES Series is suitable for a range of industrial and commercial RO systems, including:

Food and beverage processing

Chemical production and industrial water supply

Power generation and boiler feedwater pretreatment

Pharmaceutical and laboratory water systems

Electronics and industrial manufacturing

Hotels, hospitals, and commercial facilities

Surface water and groundwater treatment

Industrial wastewater treatment and reuse

Industrial pure water and process water production

Small- and medium-sized industrial water treatment systemsFinal membrane selection should be based on feedwater analysis, required permeate quality, system capacity, operating pressure, and recovery requirements.

Choose the Right ES Model for Your System

Selecting an industrial RO membrane involves more than comparing permeate flow or salt rejection alone. Feedwater TDS, operating pressure, target water quality, and overall system requirements all affect membrane performance.

The HJC ES Series offers three model options to help water treatment professionals identify a practical solution for their applications.

HJC ES Series — Smart Value. High Flow.

Contact HJC to discuss your feedwater conditions and industrial RO membrane requirements.