General
51 models in this family. Representative models: 40845 Structural Polyglass Vessels, 40846 Structural Composite Vessels, Composite Vessel 42575.

International brand dossier
Pentair is a broad water equipment group whose water-treatment brands include control valves, softening components, filter housings and cartridges, pumps, membrane housings, and X-Flow membrane modules.
Its influence comes from installed-base breadth: many residential, commercial, industrial, and packaged water systems are designed around Pentair components, so selection often depends on service parts, controls, and compatibility as much as on the individual product rating.
Pentair RO Membranes's position in RO/NF membranes and related equipment is defined by product families such as RO, NF, UF-adjacent membrane elements, membrane contactors, pressure vessels, housings, and related separation products.The portfolio is best understood inside brackish water, seawater desalination, ultrapure water, process separation, reuse, degassing, and membrane system packaging, where engineers compare the technology route, family boundaries, and duty fit before narrowing to individual models.
51
Indexed models
1
Product families
0
Subgroups
Product range and selection
This section answers two questions: which main product families Pentair RO offers, and which parameters to compare before choosing a specific model.
The main families shown on this page are General. Start with the treatment objective, equipment format, and operating duty, then use the model index below to compare exact specifications.
After choosing a product family, compare feed salinity, target salt rejection, permeate flow, operating pressure, fouling tendency, and element size and connection. Replacement projects should also verify installation or loading conditions, interfaces, and compatibility with the existing system; new projects should consider operating practice, maintenance, and spare-parts or consumables availability.
1 product family on this page.
General
51 models in this family. Representative models: 40845 Structural Polyglass Vessels, 40846 Structural Composite Vessels, Composite Vessel 42575.
Quick Model Index
The table is intentionally compact: use it to scan model names, product families, and source links quickly. Open the profile cards below when you want richer context.
51 indexed models
| Model | Application | Sources |
|---|---|---|
| 40845 Structural Polyglass Vessels | These Structural Polyglass Vessels are designed for residential and light commercial water treatment. | |
| 40846 Structural Composite Vessels | These are structural composite pressure vessels made from reinforced fiberglass, suitable for commercial and industrial water treatment. They will not rust. | |
| Composite Vessel 42575 | This STRUCTURAL Composite Pressure Vessel is designed for large commercial and industrial applications including softening, filtration, and storage. | |
| Poly-Glass Vessels | These Poly-Glass vessels are designed for residential and light commercial water softener and filtration applications. | |
| Structural FRP Vessels | These Structural FRP vessels are designed for residential and light commercial water treatment. | |
| Structural polyglass Vessels | Structural Poly Glass™ pressure vessels are designed for residential and light commercial water softener and filtration applications. | |
| Structural Pressure Vessels | Pentair RO Membranes Structural Pressure Vessels are corrosion-free composite tanks for water treatment and storage. They are approximately 50% lighter than steel tanks. | |
| PRF RO Membranes | The Pentair Water® PRF-RO is a reverse osmosis system designed for continuous flow, eliminating the need for electric pumps or storage tanks in most applications. | |
| RO 2500 Membranes | The Pentair RO 2500 is a reverse osmosis system designed for residential point-of-use drinking water applications. | |
| RO 2600 Membranes | The Pentair RO-2600 is a 5-stage reverse osmosis system designed for producing high-purity water. | |
| Water Miracle Pentair | The Water Miracle is a compact, decentralized ultrafiltration system designed by Pentair X-Flow to produce high-quality drinking water from fresh surface water It... | |
| Microguard | The Pentair MicroGuard MG-10MCB is a reverse osmosis and nanofiltration membrane element designed for safer drinking water with integral carbon block and sediment... | |
| X-Flow-B-0125 | The X-Flow-B-0125 is an advanced tubular ultrafiltration membrane element for industrial food and non-food applications. | |
| X-Flow-Compact-1-2 | The Pentair X-Flow Compact 1.2 is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications. | |
| X-Flow-Compact-1-6 -5-2MM | This X-Flow-Compact-1-6 -5-2MM is a hydrophilic tubular polyvinylidene fluoride ultrafiltration membrane element designed for large-scale water purification with good... | |
| X-Flow-Compact-4-0G | This Pentair X-Flow-Compact-4-0G is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications. | |
| X-Flow-Compact-5-1G-5-2MM | This X-Flow-Compact-5-1G-5-2MM is an ultrafiltration membrane element designed for large-scale water purification with excellent anti-fouling properties and... | |
| X-Flow-Compact-22V | The Pentair X-Flow Compact 22V is an 8-inch ultrafiltration membrane element designed for various water purification applications including pre-treatment. | |
| X-Flow-Compact-27G-Helix | The Pentair X-Flow Compact 27G Helix is an ultrafiltration membrane element designed for effluent treatment, membrane bioreactors, and large-scale water purification. | |
| X-Flow-Compact-27G | This is a Pentair X-Flow Compact 27G ultrafiltration membrane element with a hydrophilic polyvinylidene fluoride membrane on a polyester/polyolefine carrier. | |
| X-Flow-Compact-27-Helix | The Pentair X-Flow Compact 27 Helix is an 8-inch ultrafiltration membrane module designed for effluent treatment and membrane bioreactor applications. | |
| X-Flow-Compact-27 | This is a Pentair X-Flow-Compact-27 ultrafiltration membrane element with a mean pore size of 30 nm, suitable for effluent treatment and membrane bioreactor applications. | |
| X-Flow-Compact-33G-Helix | The X-Flow-Compact-33G-Helix is an ultrafiltration membrane element designed for large-scale water purification processes. | |
| X-Flow-Compact-33G | This is a Pentair X-Flow Compact 33G tubular ultrafiltration membrane module with a 33 m² membrane area. | |
| X-Flow-Compact-33-Helix | The Pentair X-Flow Compact 33 Helix is an 8-inch ultrafiltration membrane element with a Helix structure designed for high performance and reduced fouling in various... | |
| X-Flow-Compact-33 | The X-Flow Compact 33 is an ultrafiltration membrane element for water purification, with applications in pre-treatment, wastewater treatment. | |
| X-Flow-Compact-33V-Helix | The X-Flow-Compact-33V-Helix is an 8-inch ultrafiltration membrane element with a hydrophilic tubular polyvinylidene fluoride membrane and a Helix surface structure for... | |
| X-Flow-Compact-33V | This Pentair X-Flow Compact 33V is an 8-inch ultrafiltration membrane element with a 30 nm mean pore size and PVDF membrane material. | |
| X-Flow-Compact-75G-Helix | This Pentair X-Flow Compact 75G Helix is an ultrafiltration membrane element with a 75 m² membrane area. | |
| X-Flow-Compact-75G | The X-Flow Compact 75G is a Helix Ultrafiltration membrane element designed for various water purification applications, including pre-treatment for RO/NF, surface water. | |
| X-Flow-Compact-75G-non-coded | This Pentair X-Flow Compact 75G non-coded membrane element features a hydrophilic polyvinylidene fluoride tubular membrane with a 30 nm pore size. | |
| X-Flow-F-0285 | This X-Flow-F-0285 is a classic ultrafiltration membrane element featuring a hydrophilic tubular polyvinylidene fluoride membrane for industrial food and non-food... | |
| X-Flow-HFS60 | The Pentair X-Flow HFS 60 is a tight ultrafiltration membrane element designed for colloidal silica removal from surface water. | |
| X-Flow-HFW1000 | This is an 8-inch PVC housing X-Flow HFW 1000 nanofiltration membrane element designed for process and potable water production with minimal salt retention. | |
| X-Flow-R21-0-9UFC | The X-Flow R21 0.9UFC is an ultrafiltration module made from a PES/PVP blend, suitable for process water production and featuring a nominal pore size of 20 nm. | |
| X-Flow-R-21-HFS | This Pentair X-Flow R-21 HFS is an ultrafiltration membrane module used for producing process water from surface water or WWTP effluent. | |
| X-Flow-R-100-MF | This Pentair X-Flow R-100 MF is a microfiltration membrane element designed for filtering aqueous solutions and beverages in crossflow mode. | |
| X-Flow-RX300-0-9UFC | The X-flow RX-300 0.9UFC is an ultrafiltration pilot module for producing process and potable water from surface water, potable water, and WWTP effluent. | |
| X-Flow-RX300-1-5UFC | The X-Flow-RX300-1-5UFC is an ultrafiltration pilot module for process and potable water production, featuring PES/PVP membrane material within a PSF housing. | |
| X-Flow-RX300-09UFC | This Pentair X-Flow-RX300-09UFC is an ultrafiltration pilot module designed for process and potable water production. | |
| X-Flow-S-14 | The X-Flow S-14 is a microfiltration membrane module designed for beer clarification using a feed and bleed crossflow operation with backwash and CIP. | |
| X-Flow-S-0325 | The X-Flow S 0325 is a tubular polysulfone ultrafiltration membrane for industrial food and non-food applications. It offers a molecular weight cutoff of 100. | |
| X-Flow-Seaflex-64 | The X-Flow-Seaflex-64 is an ultrafiltration membrane module designed for seawater reverse osmosis pre-treatment. | |
| X-Flow-Seaguard-40 | The X-Flow Seaguard 40 is an ultrafiltration membrane element designed for seawater reverse osmosis pre-treatment. | |
| X-Flow-Seaguard-55 | The Pentair X-Flow Seaguard 55 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis systems. | |
| X-Flow-Seaguard-64 | This Pentair X-Flow Seaguard 64 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis applications. | |
| X-Flow-Xiga-40 | The Xiga 40 is an ultrafiltration membrane element designed for process and potable water filtration in dead-end operation. | |
| X-Flow-Xiga-55 | The Pentair X-Flow XIGA 55 is an Ultrafiltration (UF) membrane element designed for process and potable water filtration, offering 55 m² of surface area. | |
| X-Flow-Xiga-64 | This Pentair X-Flow Xiga 64 is an ultrafiltration membrane element with a nominal pore size of 20 nm, designed for process and potable water filtration. | |
| RO-2500 RO Drinking water system | The Pentair RO 2500 is a reverse osmosis membrane element designed for drinking water applications. | |
| RO-2600 RO Drinking water system | The Pentair RO-2600 is a reverse osmosis membrane element designed for drinking water applications. |
Brand Technical Documents
These document pages collect product manuals, model notes, accessory documents, and application files for this brand in the current category. Open the PDF when original tables, diagrams, or full manuals are needed.
These Structural Polyglass Vessels are designed for residential and light commercial water treatment.
These are structural composite pressure vessels made from reinforced fiberglass, suitable for commercial and industrial water treatment. They will not rust.
This STRUCTURAL Composite Pressure Vessel is designed for large commercial and industrial applications including softening, filtration, and storage.
The Pentair MicroGuard MG-10MCB is a reverse osmosis and nanofiltration membrane element designed for safer drinking water with integral carbon block and sediment...
These Poly-Glass vessels are designed for residential and light commercial water softener and filtration applications.
The Pentair Water® PRF-RO is a reverse osmosis system designed for continuous flow, eliminating the need for electric pumps or storage tanks in most applications.
The Pentair RO 2500 is a reverse osmosis system designed for residential point-of-use drinking water applications.
The Pentair RO-2600 is a 5-stage reverse osmosis system designed for producing high-purity water.
The Pentair RO 2500 is a reverse osmosis membrane element designed for drinking water applications.
The Pentair RO-2600 is a reverse osmosis membrane element designed for drinking water applications.
These Structural FRP vessels are designed for residential and light commercial water treatment.
Structural Poly Glass™ pressure vessels are designed for residential and light commercial water softener and filtration applications.
Pentair RO Membranes Structural Pressure Vessels are corrosion-free composite tanks for water treatment and storage. They are approximately 50% lighter than steel tanks.
The Water Miracle is a compact, decentralized ultrafiltration system designed by Pentair X-Flow to produce high-quality drinking water from fresh surface water It...
The X-Flow-B-0125 is an advanced tubular ultrafiltration membrane element for industrial food and non-food applications.
The Pentair X-Flow Compact 1.2 is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications.
This X-Flow-Compact-1-6 -5-2MM is a hydrophilic tubular polyvinylidene fluoride ultrafiltration membrane element designed for large-scale water purification with good...
The Pentair X-Flow Compact 22V is an 8-inch ultrafiltration membrane element designed for various water purification applications including pre-treatment.
This is a Pentair X-Flow-Compact-27 ultrafiltration membrane element with a mean pore size of 30 nm, suitable for effluent treatment and membrane bioreactor applications.
The Pentair X-Flow Compact 27 Helix is an 8-inch ultrafiltration membrane module designed for effluent treatment and membrane bioreactor applications.
This is a Pentair X-Flow Compact 27G ultrafiltration membrane element with a hydrophilic polyvinylidene fluoride membrane on a polyester/polyolefine carrier.
The Pentair X-Flow Compact 27G Helix is an ultrafiltration membrane element designed for effluent treatment, membrane bioreactors, and large-scale water purification.
The X-Flow Compact 33 is an ultrafiltration membrane element for water purification, with applications in pre-treatment, wastewater treatment.
The Pentair X-Flow Compact 33 Helix is an 8-inch ultrafiltration membrane element with a Helix structure designed for high performance and reduced fouling in various...
This is a Pentair X-Flow Compact 33G tubular ultrafiltration membrane module with a 33 m² membrane area.
The X-Flow-Compact-33G-Helix is an ultrafiltration membrane element designed for large-scale water purification processes.
This Pentair X-Flow Compact 33V is an 8-inch ultrafiltration membrane element with a 30 nm mean pore size and PVDF membrane material.
The X-Flow-Compact-33V-Helix is an 8-inch ultrafiltration membrane element with a hydrophilic tubular polyvinylidene fluoride membrane and a Helix surface structure for...
This Pentair X-Flow-Compact-4-0G is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications.
This X-Flow-Compact-5-1G-5-2MM is an ultrafiltration membrane element designed for large-scale water purification with excellent anti-fouling properties and...
The X-Flow Compact 75G is a Helix Ultrafiltration membrane element designed for various water purification applications, including pre-treatment for RO/NF, surface water.
This Pentair X-Flow Compact 75G Helix is an ultrafiltration membrane element with a 75 m² membrane area.
This Pentair X-Flow Compact 75G non-coded membrane element features a hydrophilic polyvinylidene fluoride tubular membrane with a 30 nm pore size.
This X-Flow-F-0285 is a classic ultrafiltration membrane element featuring a hydrophilic tubular polyvinylidene fluoride membrane for industrial food and non-food...
The Pentair X-Flow HFS 60 is a tight ultrafiltration membrane element designed for colloidal silica removal from surface water.
This is an 8-inch PVC housing X-Flow HFW 1000 nanofiltration membrane element designed for process and potable water production with minimal salt retention.
This Pentair X-Flow R-100 MF is a microfiltration membrane element designed for filtering aqueous solutions and beverages in crossflow mode.
This Pentair X-Flow R-21 HFS is an ultrafiltration membrane module used for producing process water from surface water or WWTP effluent.
The X-Flow R21 0.9UFC is an ultrafiltration module made from a PES/PVP blend, suitable for process water production and featuring a nominal pore size of 20 nm.
The X-flow RX-300 0.9UFC is an ultrafiltration pilot module for producing process and potable water from surface water, potable water, and WWTP effluent.
This Pentair X-Flow-RX300-09UFC is an ultrafiltration pilot module designed for process and potable water production.
The X-Flow-RX300-1-5UFC is an ultrafiltration pilot module for process and potable water production, featuring PES/PVP membrane material within a PSF housing.
The X-Flow S 0325 is a tubular polysulfone ultrafiltration membrane for industrial food and non-food applications. It offers a molecular weight cutoff of 100.
The X-Flow S-14 is a microfiltration membrane module designed for beer clarification using a feed and bleed crossflow operation with backwash and CIP.
The X-Flow-Seaflex-64 is an ultrafiltration membrane module designed for seawater reverse osmosis pre-treatment.
The X-Flow Seaguard 40 is an ultrafiltration membrane element designed for seawater reverse osmosis pre-treatment.
The Pentair X-Flow Seaguard 55 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis systems.
This Pentair X-Flow Seaguard 64 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis applications.
The Xiga 40 is an ultrafiltration membrane element designed for process and potable water filtration in dead-end operation.
The Pentair X-Flow XIGA 55 is an Ultrafiltration (UF) membrane element designed for process and potable water filtration, offering 55 m² of surface area.
This Pentair X-Flow Xiga 64 is an ultrafiltration membrane element with a nominal pore size of 20 nm, designed for process and potable water filtration.
AI-ready Product Profiles
These cards are designed as reusable product profiles: the same format can later appear in AI search results, shortlist views, and assisted product matching.
51 profile cards
Product profile
These Structural Polyglass Vessels are designed for residential and light commercial water treatment.
Product profile
These are structural composite pressure vessels made from reinforced fiberglass, suitable for commercial and industrial water treatment. They will not rust.
Product profile
This STRUCTURAL Composite Pressure Vessel is designed for large commercial and industrial applications including softening, filtration, and storage.
Product profile
These Poly-Glass vessels are designed for residential and light commercial water softener and filtration applications.
Product profile
These Structural FRP vessels are designed for residential and light commercial water treatment.
Product profile
Structural Poly Glass™ pressure vessels are designed for residential and light commercial water softener and filtration applications.
Product profile
Pentair RO Membranes Structural Pressure Vessels are corrosion-free composite tanks for water treatment and storage. They are approximately 50% lighter than steel tanks.
Product profile
The Pentair Water® PRF-RO is a reverse osmosis system designed for continuous flow, eliminating the need for electric pumps or storage tanks in most applications.
Product profile
The Pentair RO 2500 is a reverse osmosis system designed for residential point-of-use drinking water applications.
Product profile
The Pentair RO-2600 is a 5-stage reverse osmosis system designed for producing high-purity water.
Product profile
The Water Miracle is a compact, decentralized ultrafiltration system designed by Pentair X-Flow to produce high-quality drinking water from fresh surface water It...
Product profile
The Pentair MicroGuard MG-10MCB is a reverse osmosis and nanofiltration membrane element designed for safer drinking water with integral carbon block and sediment...
Product profile
The X-Flow-B-0125 is an advanced tubular ultrafiltration membrane element for industrial food and non-food applications.
Product profile
The Pentair X-Flow Compact 1.2 is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications.
Product profile
This X-Flow-Compact-1-6 -5-2MM is a hydrophilic tubular polyvinylidene fluoride ultrafiltration membrane element designed for large-scale water purification with good...
Product profile
This Pentair X-Flow-Compact-4-0G is an ultrafiltration membrane element designed for effluent treatment and membrane bioreactor applications.
Product profile
This X-Flow-Compact-5-1G-5-2MM is an ultrafiltration membrane element designed for large-scale water purification with excellent anti-fouling properties and...
Product profile
The Pentair X-Flow Compact 22V is an 8-inch ultrafiltration membrane element designed for various water purification applications including pre-treatment.
Product profile
The Pentair X-Flow Compact 27G Helix is an ultrafiltration membrane element designed for effluent treatment, membrane bioreactors, and large-scale water purification.
Product profile
This is a Pentair X-Flow Compact 27G ultrafiltration membrane element with a hydrophilic polyvinylidene fluoride membrane on a polyester/polyolefine carrier.
Product profile
The Pentair X-Flow Compact 27 Helix is an 8-inch ultrafiltration membrane module designed for effluent treatment and membrane bioreactor applications.
Product profile
This is a Pentair X-Flow-Compact-27 ultrafiltration membrane element with a mean pore size of 30 nm, suitable for effluent treatment and membrane bioreactor applications.
Product profile
The X-Flow-Compact-33G-Helix is an ultrafiltration membrane element designed for large-scale water purification processes.
Product profile
This is a Pentair X-Flow Compact 33G tubular ultrafiltration membrane module with a 33 m² membrane area.
Product profile
The Pentair X-Flow Compact 33 Helix is an 8-inch ultrafiltration membrane element with a Helix structure designed for high performance and reduced fouling in various...
Product profile
The X-Flow Compact 33 is an ultrafiltration membrane element for water purification, with applications in pre-treatment, wastewater treatment.
Product profile
The X-Flow-Compact-33V-Helix is an 8-inch ultrafiltration membrane element with a hydrophilic tubular polyvinylidene fluoride membrane and a Helix surface structure for...
Product profile
This Pentair X-Flow Compact 33V is an 8-inch ultrafiltration membrane element with a 30 nm mean pore size and PVDF membrane material.
Product profile
This Pentair X-Flow Compact 75G Helix is an ultrafiltration membrane element with a 75 m² membrane area.
Product profile
The X-Flow Compact 75G is a Helix Ultrafiltration membrane element designed for various water purification applications, including pre-treatment for RO/NF, surface water.
Product profile
This Pentair X-Flow Compact 75G non-coded membrane element features a hydrophilic polyvinylidene fluoride tubular membrane with a 30 nm pore size.
Product profile
This X-Flow-F-0285 is a classic ultrafiltration membrane element featuring a hydrophilic tubular polyvinylidene fluoride membrane for industrial food and non-food...
Product profile
The Pentair X-Flow HFS 60 is a tight ultrafiltration membrane element designed for colloidal silica removal from surface water.
Product profile
This is an 8-inch PVC housing X-Flow HFW 1000 nanofiltration membrane element designed for process and potable water production with minimal salt retention.
Product profile
The X-Flow R21 0.9UFC is an ultrafiltration module made from a PES/PVP blend, suitable for process water production and featuring a nominal pore size of 20 nm.
Product profile
This Pentair X-Flow R-21 HFS is an ultrafiltration membrane module used for producing process water from surface water or WWTP effluent.
Product profile
This Pentair X-Flow R-100 MF is a microfiltration membrane element designed for filtering aqueous solutions and beverages in crossflow mode.
Product profile
The X-flow RX-300 0.9UFC is an ultrafiltration pilot module for producing process and potable water from surface water, potable water, and WWTP effluent.
Product profile
The X-Flow-RX300-1-5UFC is an ultrafiltration pilot module for process and potable water production, featuring PES/PVP membrane material within a PSF housing.
Product profile
This Pentair X-Flow-RX300-09UFC is an ultrafiltration pilot module designed for process and potable water production.
Product profile
The X-Flow S-14 is a microfiltration membrane module designed for beer clarification using a feed and bleed crossflow operation with backwash and CIP.
Product profile
The X-Flow S 0325 is a tubular polysulfone ultrafiltration membrane for industrial food and non-food applications. It offers a molecular weight cutoff of 100.
Product profile
The X-Flow-Seaflex-64 is an ultrafiltration membrane module designed for seawater reverse osmosis pre-treatment.
Product profile
The X-Flow Seaguard 40 is an ultrafiltration membrane element designed for seawater reverse osmosis pre-treatment.
Product profile
The Pentair X-Flow Seaguard 55 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis systems.
Product profile
This Pentair X-Flow Seaguard 64 is an ultrafiltration membrane element designed for pretreatment in seawater reverse osmosis applications.
Product profile
The Xiga 40 is an ultrafiltration membrane element designed for process and potable water filtration in dead-end operation.
Product profile
The Pentair X-Flow XIGA 55 is an Ultrafiltration (UF) membrane element designed for process and potable water filtration, offering 55 m² of surface area.
Product profile
This Pentair X-Flow Xiga 64 is an ultrafiltration membrane element with a nominal pore size of 20 nm, designed for process and potable water filtration.
Product profile
The Pentair RO 2500 is a reverse osmosis membrane element designed for drinking water applications.
Product profile
The Pentair RO-2600 is a reverse osmosis membrane element designed for drinking water applications.