Pentair GRO-50EN 50 GPD Reverse Osmosis Membrane (4005459)

Product Description

Restore the performance of your reverse osmosis system with the Pentair GRO-50EN replacement membrane. Designed for residential and small commercial RO applications, this high-efficiency membrane delivers a nominal production rate of 50 gallons per day while helping reduce water waste compared with conventional reverse osmosis membranes.

Featuring Pentair's thin-layer composite (TLC) membrane technology, the GRO-50EN is dry-packed to help maximize shelf life and is designed for use in compatible Pentair GRO systems and select conventional RO systems.

Important: This version (part #4005459) does not include a drain-line flow control or a permeate check valve. Confirm compatibility with your existing RO system before ordering.

Key Features

• 50 GPD capacity: Nominal production of up to 50 gallons per day under specified test conditions.

• Water-efficient design: GRO technology is designed to provide improved water recovery compared with conventional RO membrane technology.

• Thin-layer composite membrane: Designed for residential reverse osmosis water purification.

• Dry-packed membrane: Helps maximize shelf life before installation.

• Broad compatibility: Suitable for compatible Pentair GRO systems and select conventional RO systems when properly configured.

Technical Specifications

• Brand: Pentair

• Model: GRO-50EN

• Part Number: 4005459

• Product Type: Reverse osmosis membrane

• Nominal Production: 50 GPD (189 LPD)

• Nominal Salt Rejection: 96% under specified test conditions

• Maximum Operating Pressure: 125 PSI (6.90 bar)

• Maximum Operating Temperature: 120°F (49°C)

• Operating pH Range: 4–11

• Maximum Free Chlorine: 0.1 ppm

• Drain-Line Flow Control: Not included

• Permeate Check Valve: Not included

Compatibility & Installation

This membrane is intended for compatible reverse osmosis systems. When replacing a membrane, verify the existing membrane's model and part number before ordering.

For installations in conventional RO systems, the appropriate drain-line flow control and check-valve configuration may be required. Confirm your system's requirements before installation.

For best results, follow the manufacturer's installation instructions and operating specifications.

What's Included

• 1 × Pentair GRO-50EN RO Membrane (4005459)

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