WF PZL Zakład Doświadczalny Ltd. was established in 2004 as a result of transformation of the Prototype Department of “PZL-Sędziszów” S.A. Filter Factory and thus started its existence as a separate manufacturing and servicing Company.


We have 35 years of experience in designing and manufacturing filters and filter elements (cartridges) of fuel, air, oil, hydraulic and other, for all kinds of engines and industrial equipment (filtration systems of working fluids and coolants).

Our steady development is based upon:

  • a solid foundation of the professional experience and responsibility of our employees,
  • the know-how that we possessed,
  • the highest possible quality of the products and services offered by us.

Our stock of specialized machines and proved engineering processes made it possible to start dynamically our activities and to increase the production.




Our Mission


We do not know what filters you need, but we know that we can make them

Having in mind the purposes of our mission: „we can produce what you need”, we do not save efforts to offer products and services with a high level of functionality, reliability and safety, which fully satisfy our customers and will be delivered on time and with competitive prices.












4 November 2009, 11:28 AM
“I will repeat myself, but I have never met such a kind and patient sales specialist before
. Thank you very much.”

21 October 2009, 2:11 PM
“Thank you very much for your unprecedented involvement 
and prompt action.”

16 October 2009, 4:29 PM
“Delivery got through to me very quickly. The product is just like I expected, perfectly cut on dimensions I wanted, it fits just fine. Thank you very much for a professional customer service – you can be sure that whenever I want any kind of a filter I will turn to you. I wil also glady recommend your company to people from ventilation industry.”

16 October 2009, 3:58 PM
“(…) after further search I got up to a company which professionally approaches customers (even so small). After a short e-mail correspondence, they immediately delivered accurately made filter elements.
They have competitive prices too – check by yourself”


22 September 2010, 12:34 PM
“Very advantageous offer, proffessional service, recommendable!”


17 November 2011, 09:12 AM
Despite the fact that I am not a regular client of Zakład Doświdczalny, I have been treated seriously and professionally, my order has been executed and delivered repidly, and the sales specialist patiently answered all my questions. I will surey take advantage of your offer again. Greetings!”