Filter Manufacture with Tradition.

W-FILTER informs:	+++ On 29 April 2026, we will be participating in the Leuna Dialog trade fair. We look forward to seeing you there and engaging in interesting discussions. +++ +++ +++ Kraftwerkstechnisches Kolloquium (KWTK) in Dresden – We look forward to seeing you and to interesting presentations and discussions. 6–7 October 2026 +++

Filter Manufacture

A Family
Business

since 1980.

The history of our family business dates back to 1980. During this time, the company’s founder, Günter Waldow, began conquering the industrial valve market with his engineering office. Over the years, there has been a focus on the development, manufacturing, and distribution of strainers, basket strainers, and pot strainers in welded construction.

About the Company

Our Products

Customized solutions for filtration and the protection of plant components.

Explore our Product World

Type W-SS welding ends

with swivel

Type W-SS welding ends

without swivel

Type W-FF flange connection

without swivel

Type W-FF flange connection

with swivel

DUAL filter W-DF

Compact design
or parallel operation

Startup Sieve W-HS

Start-up screen
for commissioning

Your solution

Accessories

Differential pressure indicator, feet, magnetic insert,
swivel/swing arm

Contact us

W-Filter
Informed.

Here you can find our latest news about Frima W-Filter.

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W-FILTER
Products
in use

The weld-in design reduces costs for counterflanges, insulation, and leaks right from the planning stage. Single-sided flanges, custom lengths, bases, cover swivels, and brackets for differential pressure measurement can also be welded on and retrofitted.

Explore the Industries & Applications

AMAGER Bakke Copenhagen

Biomass and waste incineration plants
benefit from the use of the W-type filter, as
do gas and steam as well as combined heat
and power plants – as exemplified by
AMAGER in Denmark.

GKM (Power Station Mannheim)

Nuclear facilities and fossil fuel power plants
are also optimized with W-FILTER technology
– such at the Europa's state-of-the-art
coal-fired power plant
(GKM Großkraftwerk Mannheim).

NORTHVOLT Sweden

The Filter Type W can generally be used
wherever system components need
protection and efficiency improvement.
This has recently led to applications in the
battery manufacturing – as seen at
NORTHVOLT in Sweden.