Our broad range of products includes valves, actuators and automation technology.

We are able to offer customized solutions for almost every industrial application. Due to our own production line of actuators and automation technology, the valves can always be equipped with the optimal fitting actuator. This is how an excellent matching of both components is guaranteed, which reduces the energy demand.

Series production is our business – the development of customized solutions for special applications is our passion. When a standard valve does not comply with the requirements, we develop a suitable solution in close cooperation with our customer.

Knife Gate Valve

Stafsjö’s knife gate valve XV gives a secure and tight shut-off, independent of pressure direction. The valve has good flow characteristics and can be used in applications with pulp, biomass and sludge, and the Polyurethane seated version further extend its field of applications to abrasive media.


Technical data

Nominal diameter:

DN 80 - DN 1000


DN 80 - DN 300 (EN 558 Series 20)
DN 350 - DN 800 (Company standard)

Flange accommodation:

EN 1092 PN 10
EN 1092 PN 16
Class 150
Class 150, Serie A
JIS B 2238 10K
AS 2129 Table D to E
BS 10 Table D


EN 19

Tightness check:

EN 12266 (Leakage Rate A)
ISO 5208 Class A

Temperature range:

max. 180 °C

Max. Operating pressure:

DN 80 - DN 350, 10 bar
DN 400 - DN 600, 6 bar
DN 700 - DN 800, 4 bar