The HL knife gate valve is developed to complement our existing product range with bi-directional knife gate valves with through-going gates. The HL is designed to work under similar process conditions as the well known HG and the high pressure valve HP, but in lower pressure classes. 

Stafsjö’s knife gate valves SLV and SLF are developed for slurry and abrasive applications where operation reliability and low life cycle cost are emphasized. The SLV is a lugged version while the SLF is fully flanged and especially suitable on old non-centred pipes or low pressure applications. 

By June 11th 2007 Stafsjö inaugurated a new multi-operations machine (Uniport 6000) from the dutch company Unisign