4021 Watermaker Housings 1000 PSI FRP Fiberglass Desalination Machine 4 x 21 inch Membrane Pressure Vessels ( PV-4021SW )

4021 Watermaker Housings 1000 PSI FRP Fiberglass Desalination Machine 4 x 21 inch Membrane Pressure Vessels ( PV-4021SW )

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Hydrocomponents & Technologies Inc. Housing Pressure Vessels are Equivalent to All Major U.S. Brands!

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PV-4021SW 4" x 21" 1,000 PSI FRP Pressure Vessel Membrane Housing

The PV-4021SW is a professional-grade, heavy-duty pressure vessel housing specifically engineered for high-pressure seawater reverse osmosis (SWRO), marine watermakers, and industrial desalination applications. Manufactured in the United States, this robust vessel is designed to securely accommodate a single standard 4-inch by 21-inch spiral-wound membrane element. Constructed from durable, non-corrosive Fiberglass Reinforced Plastic (FRP), it provides the exceptional structural integrity required to operate safely and consistently under extreme continuous-duty pressures up to 1,000 PSI.

Designed for reliable performance and ease of maintenance, the PV-4021SW features an end-entry configuration with standard 1/2-inch feed, brine, and permeate ports. The design maximizes the separation between the permeate and feed/concentrate ports, allowing for the use of larger, heavy-duty fittings. To ensure a secure, leak-proof seal during high-pressure operation, the housing utilizes flush-mount anodized aluminum or acetal co-polymer end plugs reinforced with stainless steel backing plates. Secure containment is further guaranteed by high-strength anodized aluminum retaining clamps and FDA-approved ethylene propylene O-rings. Engineered as a high-quality equivalent to major U.S. brands, this housing offers facility operators and marine technicians a dependable, long-lasting containment solution.