4021 300 PSI 316 SS, Robust End Caps PVC NSF, U-Pin Quick Release Leak & Corrosion Resistant, Pressure Vessel Membrane Housings PV-4021.1S

PV-4021.1S 4" x 21" 300 PSI Stainless Steel Membrane Housing

The PV-4021.1S is an industrial-grade pressure vessel engineered for high-performance reverse osmosis (RO) and filtration systems in demanding environments. Constructed from premium 316-grade stainless steel with a standard satin finish, this housing offers superior corrosion resistance compared to lower-grade alloys, making it an ideal choice for marine, high-salinity, and moisture-rich industrial applications. The vessel features a robust design that prevents surface degradation, ensuring structural longevity even when exposed to harsh chemicals or extreme environmental conditions.

The assembly utilizes a precision-engineered stainless steel (SS) U-Pin retaining system. Unlike traditional plastic clips or clamp systems, the SS U-Pin mechanism provides a secure, high-integrity seal that is not prone to the brittleness, leaks, or corrosion often associated with metallic fasteners or lower-grade hardware. Complementing the vessel’s durability, the end caps are manufactured from NSF-certified high-impact PVC. These end caps are specifically designed to resist stress-cracking and breaking under pressure, ensuring a stable, leak-proof seal that maintains system uptime and reduces maintenance cycles.