4" End Port Pressure Vessels
10 models in this family. Representative models: 4-E-300-1M-&-2M, 4-E-300-3M-to-6M, 4-E-450-1M-&-2M.
International brand dossier
Bel Pressure Vessels
BEL Composite Iberica / BEL Pressure Vessels is a composite pressure-vessel manufacturer for RO membrane housings, with BEL Group roots going back to 1966 and its composite pressure-vessel focus in desalination since 1999.
It is relevant where FRP vessel code compliance, diameter, port style, pressure rating, and global desalination references matter.Bel Pressure Vessels's position in RO/NF membranes and related equipment is defined by product families such as 4" End Port Pressure Vessels, 4" Side Port Pressure Vessels, 8" End Port Pressure Vessels and 8" Side Port Pressure Vessels.
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.Representative series on this page include 4-E-300-1M-&-2M, 4-E-300-3M-to-6M and 4-E-450-1M-&-2M.
58
Indexed models
12
Product families
0
Subgroups
Product range and selection
How to choose Bel Pressure Vessels
This section answers two questions: which main product families Bel offers, and which parameters to compare before choosing a specific model.
Step 1: Choose a product family by application
The main families shown on this page are 4" End Port Pressure Vessels, 4" Side Port Pressure Vessels, 8" End Port Pressure Vessels, and 8" Side Port Pressure Vessels. Start with the treatment objective, equipment format, and operating duty, then use the model index below to compare exact specifications.
Step 2: Confirm the model by key parameters
After choosing a product family, compare pressure rating, element count, port layout, and code requirement. 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.
Product family overview
Showing 6 main families; all 12 appear in the model index below.
4" Side Port Pressure Vessels
5 models in this family. Representative models: 4-S-300-1M-6M, 4-S-450-1M-6M, 4-S-600-1M-6M.
8" End Port Pressure Vessels
8 models in this family. Representative models: 8-E-300-1M-to-8M R6 code, 8-E-300-1M-to-8M R6 non code, 8-E-450-1M-to-8M R6 code.
8" Side Port Pressure Vessels
7 models in this family. Representative models: 8-S-300-1M to 8M R11, 8-S-450-1M to 8M R11, 8-S-600-1M to 8M R11.
9" Side Port Pressure Vessels
1 model in this family. Representative models: 9-S-300.
4" ORL Pressure Vessels
5 models in this family. Representative models: ORL 4-E 300/450, ORL 4-S 300/450, ORL 4-E 600 1M-6M.
Quick Model Index
Fast lookup for 58 indexed products
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.
4" End Port Pressure Vessels
10 indexed models
| Model | Application | Sources |
|---|---|---|
| 4-E-300-1M-&-2M | This is a Bel Pressure Vessels 4-E-300 RO membrane pressure vessel designed for one or two membrane elements. | |
| 4-E-300-3M-to-6M | This is a Bel Pressure Vessels 4-E-300 series Reverse Osmosis membrane pressure vessel, suitable for housing 3 to 6 standard 40-inch or 21-inch membrane elements. | |
| 4-E-450-1M-&-2M | This is a RO membrane pressure vessel designed for one or two membrane elements. It features a maximum allowable working pressure of 450 psi and accepts membrane elements... | |
| 4-E-450-1M-6M | This is a Bel Pressure Vessels 4-E-450 RO pressure vessel designed for 3 to 6 membrane elements. | |
| 4-E-450-3M to 6M | The Bel Pressure Vessels RO Pressure Vessel is designed to hold 3 to 6 membrane elements for reverse osmosis systems. | |
| 4-E-600-1M-6M | The 4-E-600 is a 600 psi Reverse Osmosis membrane pressure vessel designed for high-pressure applications. It features a 4. | |
| 4-E-1000-1M-6M | This is a Bel Pressure Vessels 4-E RO membrane pressure vessel designed for high-pressure applications. | |
| 4-E-1200-1M-6M | This is a Bel Pressure Vessels 4-E RO membrane pressure vessel designed for high-pressure applications up to 1200 psi. | |
| BEL4 E 300 1M & 2M L | The RO Pressure Vessel BEL 4-E-300 is designed for 1 or 2 membrane elements up to 40" in length. | |
| BEL4 E 450 1M & 2M L | This is a BEL 4-E-450 reverse osmosis pressure vessel designed to hold one or two membrane elements. |
4" Side Port Pressure Vessels
5 indexed models
| Model | Application | Sources |
|---|---|---|
| 4-S-300-1M-6M | This is a 4-inch Bel Pressure Vessels RO membrane housing designed for a maximum working pressure of 300 psi. It features a 1" Victaulic feed/concentrate port. | |
| 4-S-450-1M-6M | This is a Bel Pressure Vessels 4-S-450 RO membrane pressure vessel designed for reverse osmosis systems. It features a 450 psi maximum allowable working pressure. | |
| 4-S-600-1M-6M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for a maximum working pressure of 600 psi. | |
| 4-S-1000-1M-6M | This is a Bel Pressure Vessels 4-S-1000 RO membrane pressure vessel designed for high-pressure reverse osmosis systems. | |
| 4-S-1200-1M-6M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications up to 1200 psi. |
8" End Port Pressure Vessels
8 indexed models
| Model | Application | Sources |
|---|---|---|
| 8-E-300-1M-to-8M R6 code | The BEL8-E-300 is an 8-inch end port RO pressure vessel designed for 1 to 8 membrane elements. It features Victaulic feed/concentrate ports, BSP-Male permeate ports. | |
| 8-E-300-1M-to-8M R6 non code | This 8-inch end port RO pressure vessel is designed to house one to eight membrane elements. It features Victaulic feed/concentrate ports, a BSP-MALE permeate port. | |
| 8-E-450-1M-to-8M R6 code | This 8-inch end-port RO pressure vessel is designed for one to eight membrane elements. It features Victaulic feed/concentrate ports, BSP male permeate outlets. | |
| 8-E-450-1M-to-8M R6 non code | The BEL8-E-450 is a reverse osmosis pressure vessel designed for membrane element support. It features a 1.5" Victaulic feed/concentrate port and a 1. | |
| 8-E-600-1M-to-8M R6 | This is an 8-inch end-port RO membrane pressure vessel designed for reverse osmosis systems. | |
| 8-E-1000-1M-to-8M R6 | The BEL8-E-1000 is a reverse osmosis membrane pressure vessel designed for operation up to 1000 psi. | |
| 8-E-1200-1M-to-8M R6 | This is an 8-inch End Port Reverse Osmosis (RO) Pressure Vessel, configurable for working pressure and the number of membrane elements up to 8. | |
| 8-E-1500-1M-to-8M R1 | This 8-inch end port pressure vessel is designed for reverse osmosis applications with a maximum allowable working pressure of 1500 psi. |
8" Side Port Pressure Vessels
7 indexed models
| Model | Application | Sources |
|---|---|---|
| 8-S-300-1M to 8M R11 | This is the BEL8 8" Side Port RO Pressure Vessel, designed to house one to eight membrane elements with selectable working pressure rates up to 1,500 psi. | |
| 8-S-450-1M to 8M R11 | This is a Bel Pressure Vessels 8-inch side port RO membrane housing designed for pressures up to 450 PSI. | |
| 8-S-600-1M to 8M R11 | These 8-inch side-port reverse osmosis pressure vessels from Bel Pressure Vessels are designed to hold one to eight membrane elements. | |
| 8-S-1000-1M to 8M R11 | The BEL8 is an 8-inch side port RO membrane pressure vessel designed to house one to eight membrane elements. | |
| 8-S-1200-1M to 8M R11 | This is a Bel Pressure Vessels 8" Side Port RO membrane housing designed for 1 to 8 membrane elements. | |
| 8-S-1500-1M to 8M R11 | This is a BEL8 8-inch side port reverse osmosis membrane pressure vessel, configurable for one to eight membrane elements. | |
| 8-S-PV R11 | This is an 8-inch diameter, 1-element RO membrane pressure vessel. |
9" Side Port Pressure Vessels
1 indexed model
4" ORL Pressure Vessels
5 indexed models
| Model | Application | Sources |
|---|---|---|
| ORL 4-E 300/450 | The ORL 4-E 300/450 is a RO membrane pressure vessel from Bel Pressure Vessels. | |
| ORL 4-S 300/450 | This is a Bel Pressure Vessels ORL 4-S 300/450 membrane housing designed for reverse osmosis systems. | |
| ORL 4-E 600 1M-6M | This product is an RO membrane pressure vessel from Bel Pressure Vessels designed for water treatment applications. | |
| ORL 4-E 1000 1M-6M | This is an ORL 4-E 1000 1M-6M membrane pressure vessel from Bel Pressure Vessels for reverse osmosis systems. | |
| ORL 4-E 1200 1M-6M | The AquaChain ORL 4-E 1200 1M-6M is a RO membrane pressure vessel designed for water treatment applications. |
16" End Port Pressure Vessels
5 indexed models
| Model | Application | Sources |
|---|---|---|
| 16-E-300-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel. | |
| 16-E-450-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel for various applications. | |
| 16-E-600-1M-to-8M | This product is an RO membrane pressure vessel designed for water treatment applications. | |
| 16-E-1000-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for water treatment applications. | |
| 16-E-1200-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications. |
16" Side Port Pressure Vessels
5 indexed models
| Model | Application | Sources |
|---|---|---|
| 16-S-300-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for use with up to 300 psi working pressure. | |
| 16-S-450-1M-to-8M | This Bel Pressure Vessels unit is a 16-inch diameter RO membrane pressure vessel designed for high-pressure applications up to 450 psi. | |
| 16-S-600-1M-to-8M | This is a Bel Pressure Vessels 16-S RO membrane pressure vessel designed for operation up to 600 psi. | |
| 16-S-1000-1M-to-8M | This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications up to 1000 psi. | |
| 16-S-1200-1M-to-8M | This is a Bel Pressure Vessels 16-S RO membrane pressure vessel designed for high-pressure applications. |
Technical manuals
6 indexed models
| Model | Application | Sources |
|---|---|---|
| Technical Manual 4" End Port | This 4-inch end port pressure vessel, constructed from filament wound FRP with epoxy resin, serves as a housing for RO, NF, and UF membrane elements. | |
| Technical Manual 4" Side Port | This is the 4" Side Port technical manual for Bel Pressure Vessels, designed as housings for spiral-wound RO, NF, and UF membrane elements. | |
| Technical Manual 8" End Port | This technical manual covers Bel Pressure Vessels' 8" End Port housings, designed for RO, NF, and UF membrane elements. | |
| Technical Manual 8" Side Port | This technical manual details 8-inch side port Bel Pressure Vessels, designed as housings for spiral-wound RO, NF, and UF membrane elements. | |
| Technical Manual 16" all vessels | BEL 16" vessels are high-performance FRP composite pressure vessels for RO, NF, and UF membrane applications, designed and tested to ASME code. | |
| Shimming Procedure | This document outlines the shimming procedure for Bel Pressure Vessels to ensure proper installation and fit. |
Specials
3 indexed models
| Model | Application | Sources |
|---|---|---|
| End Caps Options | This product offers various end cap options for RO membrane pressure vessels. | |
| BEL i-lEC membranes with BEL Vessels | BEL i-lEC membranes are designed for use with BEL Pressure Vessels, featuring a unique 40.5-inch length that requires specific standard and short end caps. | |
| BEL ProValve | The BEL ProValve is a permeate sampling valve designed for direct connection to BEL 8" RO membrane pressure vessels. |
Skid Design
2 indexed models
| Model | Application | Sources |
|---|---|---|
| Group skid design | BEL GROUP offers customizable Reverse Osmosis Skids designed as medium-sized packages for easy transport and integration, often utilizing multiport systems. | |
| Multiport Skid | This multiport pressure vessel skid is designed for RO systems to reduce piping, accessories, and welds, thereby minimizing cost, footprint, and potential leak points. |
AI-ready Product Profiles
Product cards for screening and future AI matching
These cards are designed as reusable product profiles: the same format can later appear in AI search results, shortlist views, and assisted product matching.
4" End Port Pressure Vessels
10 profile cards
Pressure Vessels
Product profile
4-E-300-1M-&-2M
This is a Bel Pressure Vessels 4-E-300 RO membrane pressure vessel designed for one or two membrane elements.
Pressure Vessels
Product profile
4-E-300-3M-to-6M
This is a Bel Pressure Vessels 4-E-300 series Reverse Osmosis membrane pressure vessel, suitable for housing 3 to 6 standard 40-inch or 21-inch membrane elements.
Pressure Vessels
Product profile
4-E-450-1M-&-2M
This is a RO membrane pressure vessel designed for one or two membrane elements. It features a maximum allowable working pressure of 450 psi and accepts membrane elements...
Pressure Vessels
Product profile
4-E-450-1M-6M
This is a Bel Pressure Vessels 4-E-450 RO pressure vessel designed for 3 to 6 membrane elements.
Pressure Vessels
Product profile
4-E-450-3M to 6M
The Bel Pressure Vessels RO Pressure Vessel is designed to hold 3 to 6 membrane elements for reverse osmosis systems.
Pressure Vessels
Product profile
4-E-600-1M-6M
The 4-E-600 is a 600 psi Reverse Osmosis membrane pressure vessel designed for high-pressure applications. It features a 4.
Show remaining 4" End Port Pressure Vessels profiles (4)
Pressure Vessels
Product profile
4-E-1000-1M-6M
This is a Bel Pressure Vessels 4-E RO membrane pressure vessel designed for high-pressure applications.
Pressure Vessels
Product profile
4-E-1200-1M-6M
This is a Bel Pressure Vessels 4-E RO membrane pressure vessel designed for high-pressure applications up to 1200 psi.
Pressure Vessels
Product profile
BEL4 E 300 1M & 2M L
The RO Pressure Vessel BEL 4-E-300 is designed for 1 or 2 membrane elements up to 40" in length.
Pressure Vessels
Product profile
BEL4 E 450 1M & 2M L
This is a BEL 4-E-450 reverse osmosis pressure vessel designed to hold one or two membrane elements.
4" Side Port Pressure Vessels
5 profile cards
Pressure Vessels
Product profile
4-S-300-1M-6M
This is a 4-inch Bel Pressure Vessels RO membrane housing designed for a maximum working pressure of 300 psi. It features a 1" Victaulic feed/concentrate port.
Pressure Vessels
Product profile
4-S-450-1M-6M
This is a Bel Pressure Vessels 4-S-450 RO membrane pressure vessel designed for reverse osmosis systems. It features a 450 psi maximum allowable working pressure.
Pressure Vessels
Product profile
4-S-600-1M-6M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for a maximum working pressure of 600 psi.
Pressure Vessels
Product profile
4-S-1000-1M-6M
This is a Bel Pressure Vessels 4-S-1000 RO membrane pressure vessel designed for high-pressure reverse osmosis systems.
Pressure Vessels
Product profile
4-S-1200-1M-6M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications up to 1200 psi.
8" End Port Pressure Vessels
8 profile cards
Pressure Vessels
Product profile
8-E-300-1M-to-8M R6 code
The BEL8-E-300 is an 8-inch end port RO pressure vessel designed for 1 to 8 membrane elements. It features Victaulic feed/concentrate ports, BSP-Male permeate ports.
Pressure Vessels
Product profile
8-E-300-1M-to-8M R6 non code
This 8-inch end port RO pressure vessel is designed to house one to eight membrane elements. It features Victaulic feed/concentrate ports, a BSP-MALE permeate port.
Pressure Vessels
Product profile
8-E-450-1M-to-8M R6 code
This 8-inch end-port RO pressure vessel is designed for one to eight membrane elements. It features Victaulic feed/concentrate ports, BSP male permeate outlets.
Pressure Vessels
Product profile
8-E-450-1M-to-8M R6 non code
The BEL8-E-450 is a reverse osmosis pressure vessel designed for membrane element support. It features a 1.5" Victaulic feed/concentrate port and a 1.
Pressure Vessels
Product profile
8-E-600-1M-to-8M R6
This is an 8-inch end-port RO membrane pressure vessel designed for reverse osmosis systems.
Pressure Vessels
Product profile
8-E-1000-1M-to-8M R6
The BEL8-E-1000 is a reverse osmosis membrane pressure vessel designed for operation up to 1000 psi.
Show remaining 8" End Port Pressure Vessels profiles (2)
Pressure Vessels
Product profile
8-E-1200-1M-to-8M R6
This is an 8-inch End Port Reverse Osmosis (RO) Pressure Vessel, configurable for working pressure and the number of membrane elements up to 8.
Pressure Vessels
Product profile
8-E-1500-1M-to-8M R1
This 8-inch end port pressure vessel is designed for reverse osmosis applications with a maximum allowable working pressure of 1500 psi.
8" Side Port Pressure Vessels
7 profile cards
Pressure Vessels
Product profile
8-S-300-1M to 8M R11
This is the BEL8 8" Side Port RO Pressure Vessel, designed to house one to eight membrane elements with selectable working pressure rates up to 1,500 psi.
Pressure Vessels
Product profile
8-S-450-1M to 8M R11
This is a Bel Pressure Vessels 8-inch side port RO membrane housing designed for pressures up to 450 PSI.
Pressure Vessels
Product profile
8-S-600-1M to 8M R11
These 8-inch side-port reverse osmosis pressure vessels from Bel Pressure Vessels are designed to hold one to eight membrane elements.
Pressure Vessels
Product profile
8-S-1000-1M to 8M R11
The BEL8 is an 8-inch side port RO membrane pressure vessel designed to house one to eight membrane elements.
Pressure Vessels
Product profile
8-S-1200-1M to 8M R11
This is a Bel Pressure Vessels 8" Side Port RO membrane housing designed for 1 to 8 membrane elements.
Pressure Vessels
Product profile
8-S-1500-1M to 8M R11
This is a BEL8 8-inch side port reverse osmosis membrane pressure vessel, configurable for one to eight membrane elements.
Show remaining 8" Side Port Pressure Vessels profiles (1)
Pressure Vessels
Product profile
8-S-PV R11
This is an 8-inch diameter, 1-element RO membrane pressure vessel.
9" Side Port Pressure Vessels
1 profile card
Pressure Vessels
Product profile
9-S-300
The Bel Pressure Vessels 9-S-300 is a reverse osmosis membrane pressure vessel designed for high-pressure applications.
4" ORL Pressure Vessels
5 profile cards
Pressure Vessels
Product profile
ORL 4-E 300/450
The ORL 4-E 300/450 is a RO membrane pressure vessel from Bel Pressure Vessels.
Pressure Vessels
Product profile
ORL 4-S 300/450
This is a Bel Pressure Vessels ORL 4-S 300/450 membrane housing designed for reverse osmosis systems.
Pressure Vessels
Product profile
ORL 4-E 600 1M-6M
This product is an RO membrane pressure vessel from Bel Pressure Vessels designed for water treatment applications.
Pressure Vessels
Product profile
ORL 4-E 1000 1M-6M
This is an ORL 4-E 1000 1M-6M membrane pressure vessel from Bel Pressure Vessels for reverse osmosis systems.
Pressure Vessels
Product profile
ORL 4-E 1200 1M-6M
The AquaChain ORL 4-E 1200 1M-6M is a RO membrane pressure vessel designed for water treatment applications.
16" End Port Pressure Vessels
5 profile cards
Pressure Vessels
Product profile
16-E-300-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel.
Pressure Vessels
Product profile
16-E-450-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel for various applications.
Pressure Vessels
Product profile
16-E-600-1M-to-8M
This product is an RO membrane pressure vessel designed for water treatment applications.
Pressure Vessels
Product profile
16-E-1000-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for water treatment applications.
Pressure Vessels
Product profile
16-E-1200-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications.
16" Side Port Pressure Vessels
5 profile cards
Pressure Vessels
Product profile
16-S-300-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for use with up to 300 psi working pressure.
Pressure Vessels
Product profile
16-S-450-1M-to-8M
This Bel Pressure Vessels unit is a 16-inch diameter RO membrane pressure vessel designed for high-pressure applications up to 450 psi.
Pressure Vessels
Product profile
16-S-600-1M-to-8M
This is a Bel Pressure Vessels 16-S RO membrane pressure vessel designed for operation up to 600 psi.
Pressure Vessels
Product profile
16-S-1000-1M-to-8M
This is a Bel Pressure Vessels RO membrane pressure vessel designed for high-pressure applications up to 1000 psi.
Pressure Vessels
Product profile
16-S-1200-1M-to-8M
This is a Bel Pressure Vessels 16-S RO membrane pressure vessel designed for high-pressure applications.
Technical manuals
6 profile cards
Pressure Vessels
Product profile
Technical Manual 4" End Port
This 4-inch end port pressure vessel, constructed from filament wound FRP with epoxy resin, serves as a housing for RO, NF, and UF membrane elements.
Pressure Vessels
Product profile
Technical Manual 4" Side Port
This is the 4" Side Port technical manual for Bel Pressure Vessels, designed as housings for spiral-wound RO, NF, and UF membrane elements.
Pressure Vessels
Product profile
Technical Manual 8" End Port
This technical manual covers Bel Pressure Vessels' 8" End Port housings, designed for RO, NF, and UF membrane elements.
Pressure Vessels
Product profile
Technical Manual 8" Side Port
This technical manual details 8-inch side port Bel Pressure Vessels, designed as housings for spiral-wound RO, NF, and UF membrane elements.
Pressure Vessels
Product profile
Technical Manual 16" all vessels
BEL 16" vessels are high-performance FRP composite pressure vessels for RO, NF, and UF membrane applications, designed and tested to ASME code.
Pressure Vessels
Product profile
Shimming Procedure
This document outlines the shimming procedure for Bel Pressure Vessels to ensure proper installation and fit.
Specials
3 profile cards
Pressure Vessels
Product profile
End Caps Options
This product offers various end cap options for RO membrane pressure vessels.
Pressure Vessels
Product profile
BEL i-lEC membranes with BEL Vessels
BEL i-lEC membranes are designed for use with BEL Pressure Vessels, featuring a unique 40.5-inch length that requires specific standard and short end caps.
Pressure Vessels
Product profile
BEL ProValve
The BEL ProValve is a permeate sampling valve designed for direct connection to BEL 8" RO membrane pressure vessels.
Skid Design
2 profile cards
Pressure Vessels
Product profile
Group skid design
BEL GROUP offers customizable Reverse Osmosis Skids designed as medium-sized packages for easy transport and integration, often utilizing multiport systems.
Pressure Vessels
Product profile
Multiport Skid
This multiport pressure vessel skid is designed for RO systems to reduce piping, accessories, and welds, thereby minimizing cost, footprint, and potential leak points.
Internal details
1 profile card
Pressure Vessels
Product profile
Comparing details to others
This product is a side-port reverse osmosis membrane pressure vessel designed by Bel Pressure Vessels.