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    Full bore with excellent flow characteristics
    Bi-directional tight zero leakage shut-off
    Self-cleaning function
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    DN 80 - DN 1000 (3” - 40”)

Knife gate valve XV

Stafsjö’s knife gate valve XV offers excellent flow characteristics and bi-directional zero leakage shut-off. It is a compact chemical resistant valve suitable for media such as pulp stock, biomass and sludge. ​

The XV valve is as standard supplied with PTFE seats and stainless steel wetted parts. The valve body is available in a fully lugged version up to DN 600 and a semi lugged version all the way up to up to DN 1000. There is also a dead end service version available in DN 80 - DN 200. The high strength top works consist of stainless steel tie rods encapsulated inside structural beams.

The XV valve is modular designed and can easily be equipped with manual as well as automatic actuators and related automation accessories. Stafsjö’s gland box system with TwinPack braids and a extra scraper ensures that no media reaches the surrounding environment. 

The XV valve is available in size ranging from DN 80 up to DN 1000 (3” to 40”).

Futher information is available in the product data sheet.





Full bore with excellent flow characteristics

In open position the XV provide an unobstructed flow path where the media flow straight through. 

Bi-directional tight zero leakage shut-off

The retainer ring system (1) on both side of the gate provide a tight seal independent of pressure direction and increased tolerance against pressure shocks. The retainers are mechanically locked and can easily be removed for seat change making any maintenance work to go quick and easy.

Self-cleaning function

During closure the gate cuts through the media and the bump (2) in the lower part of the bore raise the speed and force the media out of the valve and into the pipe. The valve clean itself each time it closes.

Contact us if you have any questions