Please enter a search input. You can search for products, pages, questions...

ALFILTRA RO-PRO reverse osmosis membrane 4021 for RO-04

 (1)
Membranes for reverse osmosis systems Membranes for reverse osmosis systems
membrane-for-reverse-osmosis-systems-detail membrane-for-reverse-osmosis-systems-detail
membrane-for-reverse-osmosis-systems-detail-2 membrane-for-reverse-osmosis-systems-detail-2
€333.20
incl. VAT excl. shipping costs
  Available - Delivery between 5/20/26 and 5/22/26
  • ✓3,500 liters / day (900 gpd)
  • ✓4 inches x 21 inches
  • ✓Salt retention: min 98%

Advice

Your advantages only with us

  • Excellent expertise for 20 years
  • Highest quality in every component
  • fair price-performance ratio
  • in-house, trained fitters
  • no risk through purchase on account (from 500 €)
  • Free shipping in Germany (from 250 €)
Advice

Contact
You can reach our customer service from Monday to Thursday from 9 a.m. to 5 p.m. and Friday from 9 a.m. to 3 p.m.

RO-PRO reverse osmosis membrane 4021 for RO-04

  • ✓3,500 liters / day (900 gpd)
  • ✓4 inches x 21 inches
  • ✓Salt retention: min 98%
  • ✓Membrane type: TFC (Thin-Film Composite)
  • ✓Max. working pressure: 600 psi (4.1 mPa)

Original membrane for reverse osmosis systems REOS:

  • Salt retention: min 98%
  • Membrane type: TFC (Thin-Film Composite)
  • Max. working pressure: 600 psi (4.1 mPa)
  • Max. feed water flow: 3.9 m³/h (17gpm)
  • pH value (continuous): 2 - 11
  • pH value (cleaning cycle, approx. 30 min.): 1 - 12
  • Max. operating temperature: 45° C (113° F)
  • Max. feed water turbidity: 1 NTU
  • Free chlorine tolerance: <0.1 ppm

The Alfiltra quality promise

Highest quality

  • Our systems are made in Germany from our own production.
  • Carefully selected materials for durability and reliability
  • Up to 7 years warranty on selected systems with annual maintenance

Maximum safety

  • Pay conveniently and securely by invoice, without financial risk.
  • Positive customer reviews confirm the high level of satisfaction.
  • Quick and uncomplicated help should anything not be to your satisfaction

Competent team

  • Available throughout Germany for fast and competent service
  • Four locations guarantee personal support and fast response times.
  • If you have any questions or concerns, our support team is always available to help.

 5.0 from 5 Stars (1 Reviews)

5 Stars (1)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (0)

Latest Reviews

5.00
Ralf D.
Apr 10, 2025
The cartridges last a long time, but are also simple and quick...
The cartridges last a long time, but are also quick and easy to change.
0 people found this review helpful
show all Reviews

Technical specifications