2521 Ultrapure Lab Grade Water Pressure Vessel Housing 225 PSI PVC for 2.5 x 21 inch Membranes

2.5" x 21" 225 PSI PVC Pressure Vessel Membrane Housing (Ultrapure & Laboratory)

This is a highly durable, single-element PVC pressure vessel engineered specifically for critical high-purity, laboratory, and scientific water treatment systems. Proudly Made in the USA, this housing is designed to seamlessly accommodate one standard 2.5-inch by 21-inch spiral-wound membrane element. Unlike mass-produced, stamped stainless steel commodity housings, this premium vessel is crafted from specialized heavy-wall PVC extrusions and precision-machined on a lathe. This highly specialized manufacturing process ensures a structurally superior housing engineered to handle the unique chemical demands of critical zero-TDS environments.

Constructed from premium, NSF-approved white PVC, the vessel features sturdy PVC collars and flush-mount, easy-aligning end plugs that ensure exceptional structural integrity while making fitting installation completely effortless. Its chemically inert construction makes it the premier choice for double-pass RO systems, laboratory clean-rooms, and pre-treatment to deionized (DI) resin beds. Because highly purified, mineral-free water acts as a "hungry" solvent, it will naturally strip microscopic metal ions from the walls of a standard stainless steel housing. This completely inert PVC vessel will never leach nickel, chromium, or iron into the permeate stream, guaranteeing that your ultrapure water remains completely pristine and uncontaminated after filtration.

Built to withstand demanding continuous-use scientific environments, this pressure vessel is rated for a maximum operating pressure of 225 PSI. Its intelligent structural design maximizes the spatial separation between the 1/4-inch permeate port and the 1/4-inch feed and brine ports, comfortably allowing for the integration of specialized sanitary system fittings without clearance issues. For a highly secure and reliable seal, the assembly utilizes FDA-approved Ethylene Propylene O-rings paired with robust, self-locking 304 stainless steel U-Pin retaining devices, providing facility operators with a safe, leak-proof, and easy-to-maintain filtration housing that safeguards water purity.