WB, WB11 & WB14 Series
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Stafsjö’s WB14E knife gate valve is a high performance full bore shut-off valve with superior flow characteristics, offering bi-directional zero leakage isolation for process pressure up to 10 bar. Ideal for fluids such as pulp stock, chemicals, sludge, biomass, and water. The fully lugged body design is also suitable for dead-end services and is widely used in the pulp and paper industries worldwide.
Stafsjö’s WB14E knife gate valve is a high performance full bore shut-off valve with superior flow characteristics, offering bi-directional zero leakage isolation for process pressure up to 10 bar. Ideal for fluids such as pulp stock, chemicals, sludge, biomass, and water. The fully lugged body design is also suitable for dead-end services and is widely used in the pulp and paper industries worldwide.
The WB14E valve is modular designed and it can easily be customized in materials, with actuators and related automation accessories to fit different process conditions. The valve is also available with a mechanical lock out. As standard, the WB14E is supplied with stainless steel wetted parts including the fully lugged valve body, polished gate, and gland. Up to DN 300 it has a one-piece valve body and from DN 350 and bigger it features a rigid two-piece body. The WB14E sealing system assures a first rate sealing, both internally and externally against the surrounding environment.
The WB14E automated assemblies, come standard with proximity switch sockets to confirm the opening and the closing of the valve. The valve design also allows for magnetic limit switches mounting.
The valves feature a cavity-free bore to prevent media build up during operation. The polished gate with the dual bevel edge and reduced gate arc profile allow the gate to cut through the media seamlessly. The design also prevents media from wedging between the gate and the body as the valve closes. Gate guides support the gate through the entire range of travel. At the bottom of the guides, the relief areas promote a self-cleaning, flushing action as the gate moves into the final stage of closure. The perimeter resilient seat provides tight shut-off in both directions. The seat is also reinforced with a stainless steel core to enhance durability. Smooth cycling and a tight shut-off independent of valve position are achieved by the high strength top works that provide an essential alignment of the gate. It utilizes stainless steel tie rods encapsulated inside the structural beams. Stafsjö assembles stainless steel gate guards as standard on all automated valves.
