Stafsjö has introduced the SLH and SLX for really demanding applications with slurry and other abrasive media.
After the success of the Stafsjö SLV valve with its replaceable seats for slurry applications, the company identified that many more projects and applications required extreme performance at very high pressures. To be in a position to offer a complete package ensuring success in this market segment the engineers realised that high pressure slurry valves were required in the product range. Now with a complete range of slurry valves Stafsjö together with its partners are ideally placed to bid on upcoming projects.
Stafsjö’s SLH is suitable for pressures up to 20 bar, whereas the SLX can operate at pressures as high as 50 bar. Just like Stafsjö’s other slurry valves, these two are designed to give a tight shut-off independent of pressure direction. The flow capacity is maximised with a full bore and minimal seat cavity, and at the same time stresses and wear on the equipment are minimised resulting in long service life of the valve and related process equipment.
Product features
The SLH and SLX have epoxy coated fully lugged valve bodies in nodular iron with integrated purge ports. The reinforced seats are flexible in an axial direction and seal towards each other in the bore when the valve is in the open position, thus protecting internal parts and the gate from the abrasive high pressure media. On closing, the seats are displaced axially, forming a seal with the gate until it completely seals off the bore giving bi-directional tight shut-off. The seats also form a sealing face on the valve flanges saving the need for additional gaskets. The gate is supplied in high strength stainless steel, coated to give a hard and high wear together with a corrosion resistance surface. For safety reasons the valves are always supplied ready to be locked in either opened or closed position. The gland box, with three layers of TwinPack packing and a box bottom scraper, gives the gate guidance during operation and makes sure that a first-rate sealing is retained.
Both SLH and SLX have solid top works to give excellent stability during operation. Within the standard product range numerous types of actuators and
accessories are available. Retrofitting of actuators is easily done in the field.
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