German BURBACH valves BURBACH models BURBACH prices

BURBACH valves, also known as globe valves, belong to the forced-sealing valve category. Therefore, when the valve is closed, pressure must be applied to the disc to force the sealing surfaces to prevent leakage. When the medium enters the valve from below the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing plus the thrust generated by the medium pressure. The force required to close the valve is greater than the force required to open it, so the diameter of the valve stem must be large; otherwise, the valve stem may bend. According to the connection method, they are divided into three types: flange connection, threaded connection, and welded connection. Since the emergence of self-sealing valves, the flow direction of globe valves has changed to enter the valve cavity from above the disc. At this time, under the action of medium pressure, the force to close the valve is small, while the force to open the valve is large, and the diameter of the valve stem can be correspondingly reduced. At the same time, under the action of the medium, this type of valve is also tighter.