Satisfied customers: the cornerstone of our company

Today, Bertfelt Teknik is a leading manufacturer of constant flow valves for the European market and a distributor of spray control shields and high-quality bolts (Rotabolt) for the Scandinavian market.

Customer proximity is very important to us. With our sales offices in Berlin, Amsterdam and Paris and our headquarter in Stockholm, we serve our customers throughout Europe. We assist our customers in designing customized valves and inserts that can be put to use in existing and/or improved installations. We are the first choice partner for OEM manufacturers.

Bertfelt Teknik provides the following high-quality reliable products:

a wide range of BT-Maric constant flow valves

BT-Maric constant flow valves

Constant flow valves (sometimes called flow controllers, flow limiters or throttle valves) which facilitate a pre-set constant flow for water and other media regardless of pressure.

Spray control shields (sometimes called flange spray guards or valve guard shields) for a safer working place in the processing industry. Bertfelt Teknik imports spray shield for distribution to customers on the Scandinavian as well as the Baltic market. BL Instruments is responsible for sales to customers on the Swedish market.

Rotabolt, screws bolts with a torque load tension indicator, also called bolts screws with built-in load control. Used by customers who demand reliable screw bolted joints. Rotabolt is sold in Sweden and Finland.

A wide range of constant flow valves, spray shields and high-quality screws suitable for a wide variety of markets

Active for over more than 30 years, Bertfelt Teknik offers a wide range of equipment: constant flow valves, spray shields and high-quality screws all suitable for a wide variety of markets such as mining, engineering, manufacturing, food processing and vehicle industry, etc.


Since 2015, Bertfetlt Teknik has been certified according to ISO 9001:2015 and ISO 14001:2015. All our products and processes are tested and reviewed according to these standards in order to ensure high, reliable and consistent quality.


For Bertfelt Teknik, the safety of its staff and its partners has a high priority. Therefore, all products and processes are designed considering people’s safety.

Reduced impact on the environment

By implementing the ISO 14001:2015 standard, Bertfelt Teknik works constantly on reducing its environmental footprint. Our constant flow valves have a positive impact on the environment helping us in managing our water supplies.