Is this the membrane for the Spectra Ventura 150 Deluxe Watermaker Spectra Part Number FT-MB-20

Yes, this element will work for that system.

is this just a part,or the whole thing,,I do not see how this could possibly work ?

Hello! If I understand your question correctly, you're trying to determine whether this is a complete water filtration system or just a component of one. This is the replacement membrane for a seawater desalination system. It is a consumable part - not a stand alone system. This is what goes inside of the white membrane housing/pressure vessels. I hope that makes sense?

Will this fit the Katadyn Survovor 35?

This will not work, search for "Katadyn 8012793"

Did anyone try this on a dessalator 60 water maker ?

My friend on another boat did use this part with his dessalator. Tip for dessalators... if you are struggling to get the end caps off the pressure vessel to get to the membrane (this part) then remove the "cage" that holds the end caps in place and just bring the watermaker up to pressure slowly. One end or the other will pop out due to the pressure inside.

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Dow Filmtec

Product ID: 56668650

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Details

Material
Polyamide
Product dimensions
6.4D x 53.3W x
External testing certification
NSF
Product benefits
Converts to in
Brand
Dow Filmtec

🌊Engineered for seawater desalination

💧Highest flow rates for max water output

⚙️Precision automated membrane fabrication

Description

🌊 Pure power, perfected flow — desalination redefined.

CHLORINE RESILIENCE - Tolerates free chlorine levels below 0.1 ppm, extending membrane life and reliability.
COMPACT DURABLE DESIGN - Slim 2.5" x 21" polyamide composite membrane built to withstand harsh marine environments.
ROBUST PRESSURE HANDLING - Operates efficiently up to 15 psig pressure drop, optimizing system energy use.
UNMATCHED FLOW PERFORMANCE - Delivers industry-leading water throughput to quench any demand, on land or sea.
PRECISION ENGINEERED CONSISTENCY - Automated fabrication ensures every membrane performs flawlessly, batch after batch.

The Dow Filmtec SW30-2521 is a high-performance reverse osmosis membrane designed specifically for seawater desalination. Featuring the highest flow rates available and precision automated manufacturing, it guarantees consistent, reliable water purification. With a robust pressure tolerance of 15 psig and chlorine resistance below 0.1 ppm, this compact polyamide thin-film composite membrane is engineered to deliver superior desalination efficiency in both land and marine applications.

Specifications

Manufacturer	Dow Filmtec
Part Number	FILMTEC-SW30-2521
Product Dimensions	53.34 x 6.35 x 6.35 cm; 930 g
Item model number	FILMTEC-SW30-2521
Size	2.5" x 21"L
Colour	Yellow
Material	Polyamide Thin-Film Composite
Item Package Quantity	1
Temperature Range	113 Degrees Fahrenheit
Batteries included?	No
Batteries Required?	No
Item Weight	930 g

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