Vessel SS, 4x40, 1/2" x 3/4" Ports

The 4x40 Stainless Steel Vessel from Water Purification Supplies is a rugged membrane housing built for commercial reverse-osmosis applications. Constructed of corrosion-resistant stainless steel and fitted with 1/2" inlet and 3/4" outlet ports, it houses a standard 4" x 40" RO membrane element and stands up to the pressures and continuous duty of commercial water-purification work.

Built for Commercial RO Duty

In a commercial reverse-osmosis system, the pressure vessel holds and protects the membrane element while directing feed, permeate, and concentrate flows to their proper outlets. Stainless steel construction offers excellent strength, hygiene, and resistance to corrosion, making it well-suited to the demanding, around-the-clock service typical of commercial installations such as restaurants, car washes, laboratories, and light industry. The dedicated 1/2" and 3/4" ports keep feed and product plumbing properly separated for clean, reliable operation.

• Stainless steel pressure vessel for durability and corrosion resistance
• Sized for a standard 4" x 40" RO membrane element
• 1/2" inlet and 3/4" outlet ports
• Designed for commercial reverse-osmosis systems
• Robust construction for continuous-duty service
• From Water Purification Supplies
• Hygienic stainless construction suits continuous wet service

When installing, mount the vessel securely and connect the feed and product lines to the correct ports, observing the manufacturer's recommended orientation and pressure ratings. Insert the membrane element carefully and ensure the end caps and seals are properly seated before pressurizing the system to avoid leaks or damage. As a core component of a commercial RO setup, this stainless steel vessel provides a strong, hygienic, and long-lasting home for your membrane, supporting reliable high-volume water production. Its corrosion resistance also makes it a smart, durable choice in the wet, continuously operating environments where commercial RO systems run.

Periodic inspection of the seals and end caps during membrane changes helps keep the vessel performing at its best over years of service. With proper care, this stainless steel housing remains a dependable, hygienic foundation for your commercial reverse-osmosis system, supporting consistent, high-volume production of purified water. Built to handle the pressures and continuous duty of commercial work, it gives your membrane a strong, hygienic home that supports steady, high-volume output day after day.