Knife Gate Valve for High Pressure Applications

Stafsjö’s high pressure knife gate valves HP, HPT and HX are all strenthened to withstand high bi-directional pressures. They are equipped with through-going “O” port gates and this secure a really safe and reliable shut-off of static and highly concentrated media. This shut-off performance, along with its excellent flow characteristics, makes them suitable for really demanding operating conditions with media as pulp (pulp concentration < 18%), liqour and highly concentrated slurry.

Technical data

Nominal diameter:

DN 300 – DN 900


Stafsjö manufacturing standard

Flange accommodation:

EN 1092 PN 10
EN 1092 PN 16
JIS B 2238 10K
ASME/ANSI B16.5 Class
150, ASME/ANSI B16.47
Class 150, series A

Tightness check:

EN 12266-1:2012 Rate A

Max. Operating pressure:

DN 300 – DN 800, 10 bar
DN 900, 6 bar