Codeline Membrane Housing

CodeLine is the world’s leading brand of membrane housings built to maximize the performance of your water purification systems. For over 3 decades, CodeLine has been the most trusted brand in critical & demanding applications like Desalination, Reverse Osmosis, Nanofiltration & Ultrafiltration.


CodeLine membrane housings offer significant advantages over similar membrane housings.

A failsafe shell enables the vessel to weep at four times the design pressure preventing catastrophic failure, the qualification pressure exceeds six times the design pressure providing better safety.
Composite construction which results in superior impact and corrosion resistance.
Mirror ID finish up to 4 Ra, plus a precision bore delivers better membrane sealing and ease of membrane loading and unloading.
The Unique quick locking system lets you access membranes in seconds.
Multiporting option allows vessels to be linked together cutting down investment on expensive manifolds.

Continuing with the tradition of setting standards in the industry, Pentair Water has introduced the CodeLine OCTA series of membrane housings.

our products

Codeline 160E Membrane Housings

Codeline 40E Membrane Housings

Codeline 80E Membrane Housings

Codeline 160S Membrane Housings

Codeline 80S Membrane Housings

Codeline 80U Membrane Housings

Codeline 40S Membrane Housings

Protec Pressure Vessels

We understand that these products are expected to last the entire life of the RO system. In order to help ensure the life of the pressure vessel, we have selected the best materials and use the best fabrication methods available in the manufacturing of our products. When you select PROTEC™ products, here are some of the benefits you receive:

Operational Excellence and First Time Quality
Allowing Protec Arisawa to meet the highest level of quality, scheduled shipments and other customer expectations. 

Leak Free Reliability
PROTEC™ pressure vessels are tested as an assembly including the specific heads that will be shipped with each vessel. This attention to detail allows us to claim the best leak-free reliability record in the industry. We understand that no one likes to deal with leaks caused by poor workmanship, low quality materials and insufficient in-house testing. With Protec Arisawa, you receive high quality leak-free vessels, first time every time.

Protec 4″ End Ported Membrane Housings

Protec 4″ Side Ported Membrane Housings

Protec 8″ End Ported Membrane Housings

Protec 8″ Mega Side Port MSP Membrane Housings