Excellent Filter
"Very please with my new membrane filter. ESP representative was very helpful explaining how to install the unit. Thanks"
Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424
Q&As
Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424
Q&As
Part Number:
4004424
High efficiency 1 to 1 RO membrane with flow control delivers 50 GPD and reduced water waste.
Read More
Subscription Details
Automatic deliveries and charges at your selected frequency. Skip, reschedule, or cancel through your subscription account. View subscription details.
IN STOCK
Description
The Pentair 4004424 GRO-50EN High Efficiency is an innovative next-generation RO Membrane using "Thin Layer Composite" technology (TLC) to provide enhanced water recovery in an encapsulated membrane. Where traditional RO membranes have a 3:1 ratio of 3 gallons of waste water to every gallon of purified water, the GRO-50EN new technology allows for a 1:1 ratio of 1 gallon of waste water to every gallon of purified water; making it more water and energy efficient. Less waste water down the drain for the same amount of purified water means saving you money and the environment with the same great results! The Pentair 4004424 GRO-50EN model RO membrane includes a drainline flow control, a premeate check valve, a 96% rejection rate, 1/4" quick connect fittings and is 2.5 inches wide by 15.14" inches long with a production rate of 50 gallons per day.
Specs
- Flow Rate: 50 Gallons Per Day
- Dimensions: 15.14" X 2.5"
- Replace every 24 months
- 1/4" Quick Connect Fittings
- Rejection Rate: 0.96
Features
This Item Fits These Select Systems
Helpful Info & Downloads
Overall rating: 5.0 / 5 from 8 reviews.
AI Generated Review Summary
Summary topics
Review topics: [service, representative].
Review highlights
Reviews
Excellent Filter
"Very please with my new membrane filter. ESP representative was very helpful explaining how to install the unit. Thanks"
Great quality, easy to replace
"Great quality, easy to replace"
CUSTOMER SERVICE FIVE STARS
"HEY THE MEMBRANE IS FINE, BUT I CALLED THEIR OFFICE BECAUSE I WAS IGNORANT ABOUT WHAT I NEEDED AND THE REP WAS SO VERY HELPFUL. CUSTOMER SERVICE IS SO IMPORTANT TO ME, AND THEY HAVE REALLY GREAT CS."
Easy to install.
"Easy to install."
The customer service was excellent.
"The customer service was excellent. I am your customer."
DIY
"First time buyer Product arrived quickly Quality appears fine"
Easy Easy Easy
"Super simple to install. Rinsed it for a number of hours and it works great."
Great service
"Great service"
Q&A
Q:
What is the rated production of the Pentair GRO-50EN 4004424?
A:
It is rated for up to 50 gallons per day under specified test conditions. Actual output varies with feed pressure, temperature, dissolved-solids level, and membrane condition.
Q:
Which systems does the Pentair GRO-50EN 4004424 fit?
A:
The catalog lists: GRO-50EN, GRO-2550, RO 1:1 Water Conserver, GREEN RO 4 (GRO-50-4), GREEN RO 5 (GRO-50-5), SYS-PENTAIR-GRO50. Confirm the exact model or part number on your equipment before ordering Pentair GRO-50EN 4004424.
Q:
What should I verify before ordering?
A:
Match the exact part number and encapsulated high-efficiency element with integrated flow control, including seals and the flow-control arrangement. This model is designed around a nominal 1:1 product-to-drain ratio under specified conditions; do not confuse it with the 4002574 version without flow control.
Q:
How often should this RO membrane be replaced?
A:
A common interval is about 24 months, but source water, prefilter maintenance, and use affect service life. Test product-water TDS and replace sooner if rejection or output declines.
Q:
Can I substitute a different GPD membrane?
A:
Only if the equipment manufacturer permits it. Membrane capacity must match pressure and the flow restrictor so product and drain flow remain balanced.
Q:
What should I do after installation?
A:
Confirm seals and tubing, restore water slowly, check for leaks, and follow the system instructions for flushing and discarding initial product water.
