The Pentair X-Flow XF53 Membrane Element is a replacement for Pentair X-Flow XF40 Membrane Element.
 XF53 Membrane Elements are based on hydrophilic hollow-fiber ultrafiltration membranes, composed of a PES/PVP blend. They have high mechanical and chemical strength, making them suitable for a wide range of applications. The pressurized membrane elements with inside-out configuration are the industry’s choice for the removal of bacteria, viruses, suspended solids, and colloids.


Hollow fiber ultrafiltration


  • Removal of microorganisms
    - Membrane filtration provides 99.9999% reduction of bacteria and 99.99% reduction of viruses by mechanical means
  • Redesigned bypass tubes to allow larger flows
  • High membrane packing density: One of the industry’s smallest free volume in a membrane elements
  • 100% integrity testing on individual fibers
  • Individual fiber repair
  • Very good antifouling behavior
  • Typical permeate quality:
    • SDI < 3
    • Turbidity < 0.1NTU
  • Excellent chemical resistance:
    • Wide pH range: 2 – 12
    • High chlorine stability:maximum free chlorine 250 mg/l
  • Typical high permeability: low energy consumption

discover the power of xf53 with 5 scenarios

Upgrade your plant with the Pentair X-Flow XF53 Membrane Element– a game-changer!
Designed as a seamless replacement for Pentair X-Flow Xiga 40 Membrane Elements, offers a perfect fit for your existing setup while delivering a remarkable 32.5% increase in active membrane surface area. 

Discover the impact of X-Flow XF53 through five scenarios:
  1. Maintain current settings
  2. Increase plant robustness
  3. Decrease OpEx
  4. Increase capacity
  5. Maximize plant utilization

Get to know the details and explore how X-Flow XF53 can transform your system by clicking the link below to access the in-depth scenarios.

Read the five XF53 replacement scenarios

Functional description

The core of the XF53 Membrane Element is the single-fiber, inside-out filtration process that delivers a robust solution. Mode of operation is dead-end with regular backwash (permeate only) and chemically enhanced backwash. The membrane elements are operated horizontal and can be utilized in Pentair X-Flow's Xiga Solution.

Fields of application

Increase the plant capacity or decrease OPEX
The X-Flow XF53 Membrane Elements are designed to replace the XF40, formerly known as Xiga 40, and offers a range of options to improve your existing operation or provide a cost-effective solution to replace your XF40 membrane elements. The XF53 module can be utilized in Pentair Xiga Solution.

Potable water production 
X-Flow XF53 provide superior separation performance and effective rejection of viruses and chlorine-resistant organisms such as Cryptosporidium and Giardia.

Process water production
The membrane elements offer an effective barrier to suspended solids and silt. The permeate can be used directly or, if salinity and dissolved solids are not within the required limits, the permeate can be fed to a downstream RO system.

Effluent polishing
The XF53 Membrane Elements are a reliable solution to meeting the highest standards for turbidity and microbiology. The polished effluent is ready for high- grade and unrestricted reuse applications.

Pretreatment for Seawater Reverse Osmosis (SWRO) systems
X-Flow's XF53 offer an effective barrier to suspended solids and silt. The almost total removal of suspended solids protects the SWRO from fouling.

Typical applications are the filtration of surface water, large-scale drinking and process water production and pretreatment for SWRO.



Membrane surface area
53 m²
Module dimensions (dxl)
8" x 1527.5 mm
Housing material
Membrane material
Hydraulic membrane diameter
0.72 mm
Nominal pore size
20 nm

The Pentair X-Flow XF53 Membrane Element is a replacement for Pentair X-Flow XF40 Membrane Element.

Featured cases

CocaCola slider image

wakefield, united kingdom

potable water production

Witbank slider image

Emalalheni (Witbank) South Africa

Acid mine drainage

WTE-Moscow slider image

South-West Moscow

Surface water