Company lists · Data refreshed September 2026

Top 24 Membrane filtration companies based in Spain

Name: Membrane filtration companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 70 companies tracked

RevenueBase identified 70 membrane filtration companies headquartered in Spain as of September 2026 and tracks 731 professional contacts across them, including 125 with verified work emails. Madrid is the largest hub.

This list covers membrane filtration companies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

70Companies

731Contacts tracked

125Verified emails

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The 24 largest membrane filtration companies based in Spain

Ranked by team size

Top 24 of 70 membrane filtration companies based in Spain, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to membrane filtration companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Protec Arisawa	Strong evidence	Munguia, SpainHQ checked Sep 20, 2026	201-500	79 contacts →
	Strong evidence “Protec Arisawa is the global leader for the design and the manufacturing of FRP (Fiber Reinforced Plastic) Pressure Vessels for membrane filtration systems.” Source: RevenueBase Database · checked Sep 20, 2026
2	Afarvi Sistemas	Indirect evidence	Ajalvir, SpainHQ checked Sep 20, 2026	51-200	62 contacts →
	Indirect evidence “Afarvi Sistemas S.L.” Source: RevenueBase Database · checked Sep 20, 2026
3	Grupo Cartés España	Indirect evidence	Coslada, SpainHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “UN EQUIPO DE EXPERTOS PARA UNA DECISIÓN 100% SEGURA En Grupo Cartés somos expertos en la propuesta de soluciones de filtración y tratamiento de materia en cualquier estado…” Source: RevenueBase Database · checked Sep 20, 2026
4	Hidro-Water	Partial evidence	Aldaia, SpainHQ checked Sep 20, 2026	51-200	53 contacts →
	Partial evidence “Manufacturer and wholesale exporter of equipment for water treatment, both domestic and industrial, specializing in: reverse osmosis, filtration, ultrafiltration, MBR…” Source: RevenueBase Database · checked Sep 20, 2026
5	Fluytec	Partial evidence	Abanto-zierbena, SpainHQ checked Sep 20, 2026	51-200	25 contacts →
	Partial evidence “Fluytec, with a proud legacy spanning over 45 years in the water filtration sector, stands as a distinguished Spanish Engineering and Manufacturing entity.” Source: RevenueBase Database · checked Sep 20, 2026
6	Dorsan Filtration	Partial evidence	Igualada, SpainHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “DORSAN® is a company specialized in liquid filtration.” Source: RevenueBase Database · checked Sep 20, 2026
7	TEFSA	Indirect evidence	Esplugues De Llobregat, SpainHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “We manufacture equipment for solid-liquid separation; filter presses, belt filters, vacuum filters, pressure filters, among many others.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sefiltra S.A	Indirect evidence	Alcobendas, SpainHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “SEFILTRA, S.A, es una empresa española dedicada desde hace más de 40 AÑOS al diseño, fabricación y suministro de instalaciones para purificación de fluidos en las industrias de…” Source: RevenueBase Database · checked Sep 20, 2026
9	Filternox	Indirect evidence	Valencia, SpainHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect evidence “Filternox is an Automatic Self-Cleaning Filter manufacturing company.” Source: RevenueBase Database · checked Sep 20, 2026
10	Daga Equipment	Indirect evidence	Calaf, SpainHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “En DAGA investigamos, desarrollamos y fabricamos equipos especializados para la depuración y tratamiento del agua desde el año 1965.” Source: RevenueBase Database · checked Sep 20, 2026
11	Gesfilter, S.L	Indirect evidence	Sant Cugat Del Valles, SpainHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “Gesfilter was born in 1995 with the mission of offering the industry the best alternative in the microfiltration of all types of fluids.” Source: RevenueBase Database · checked Sep 20, 2026
12	Venfilter	Indirect evidence	Terrassa, SpainHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Founded in Terrassa in 1992, Venfilter is today the only company in the sector with 100% national capital.” Source: RevenueBase Database · checked Sep 20, 2026
13	Surphase	Partial evidence	San Sebastián, SpainHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “Surphase is the first technology to deliver a crystal clear, real-time view of both membrane fouling and cleaning processes.” Source: RevenueBase Database · checked Sep 20, 2026
14	Chmlab Group	Partial evidence	Terrassa, SpainHQ checked Sep 20, 2026	11-50	10 contacts →
	Partial evidence “CHMLAB Group is a specialized company in separation, filtration and purification products with the aim to fulfil the customer requirements in the scientific community.” Source: RevenueBase Database · checked Sep 20, 2026
15	Nature Works Glass Filter Media	Indirect evidence	Alfaz Del Pi, SpainHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Nature Works is a filter media made from virgin granulated glass, designed to replace silica sand in any standard filter available on the market and intended for both…” Source: RevenueBase Database · checked Sep 20, 2026
16	Fires, S.L	Indirect evidence	Muskiz, SpainHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Desde 1993 hemos apostado por la especialización como único canal para alcanzar los mejores resultados en todas y cada una de nuestras acciones de colaboración con nuestros…” Source: RevenueBase Database · checked Sep 20, 2026
17	Filtraglass	Partial evidence	Vilamalla, SpainHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “Filtraglass is a water treatment company specializing in the manufacturing of water filtration systems for the glass industry.” Source: RevenueBase Database · checked Sep 20, 2026
18	Filtros Castelló	Indirect evidence	Massanassa, SpainHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Filtros Castelló se posiciona como un referente en la industria de filtración al por mayor, destacando por nuestra dedicación a la calidad y la satisfacción del cliente.” Source: RevenueBase Database · checked Sep 20, 2026
19	Disorca Filtration S.L	Indirect evidence	Cardedeu, SpainHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Somos una empresa que nos dedicamos a la comercialización de micro filtración, filtración esterilización de fluidos.” Source: RevenueBase Database · checked Sep 20, 2026
20	Cersip	Partial evidence	Vilamalla, SpainHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial evidence “At Cersip we manufacture water filtration systems with solid particles from various materials for all types of industries such as stone, marble, ceramic and metal, among others.” Source: RevenueBase Database · checked Sep 20, 2026
21	Genesys Membrane Products S.L	Partial evidence	Las Rozas De Madrid, SpainHQ checked Sep 20, 2026	11-50	3 contacts →
	Partial evidence “The Genesys group of companies develops and manufactures speciality reverse osmosis (RO) membrane chemicals, antiscalants, cleaners, flocculants and biocides.” Source: RevenueBase Database · checked Sep 20, 2026
22	Intrafluid	Indirect evidence	Cardedeu, SpainHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Ingeniería en Tratamientos de Fluidos es una empresa localizada en el Vallés Occidental de la provincia de Barcelona.” Source: RevenueBase Database · checked Sep 20, 2026
23	airepuro.cat	Indirect evidence	Cornellà De Llobregat, SpainHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Aire Puro es una empresa formada por profesionales con más de 20 años de experiencia en el mundo de la filtración, centrada en la filtración industrial de partículas y de…” Source: RevenueBase Database · checked Sep 20, 2026
24	Deiax-Aquos	Partial evidence	Calvia, SpainHQ checked Sep 20, 2026	1-10	2 contacts →
	Partial evidence “At DEIAX-AQUOS®, we offer sustainable, technological, and safe solutions for water filtration and purification in businesses, hospitality, the nautical sector, and residences.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: membrane filtration companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names membrane filtration companies.
Partial evidence: Its own public description names part of membrane filtration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name membrane filtration companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 70 membrane filtration companies based in Spain

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Membrane filtration companies based in Spain at a glance

As of Sep 20, 2026

17.1%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

8.6%Largest-city concentration · Madrid

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 70 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among membrane filtration companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “membrane filtration companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names membrane filtration companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among membrane filtration companies, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 125 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names membrane filtration companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many membrane filtration companies are there based in Spain?

RevenueBase identified 70 membrane filtration companies headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Protec Arisawa, headquartered in Spain, tops this list with the largest team on record.

Which city has the most membrane filtration companies?

Madrid leads with 6 headquartered companies, followed by Cornella De Llobregat (3) and Berga (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 125 verified decision-maker contacts tracked across these 70 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.