The valve is used to blow down and / or to drain steam boilers. The conception of the valve enables a fast opening necessary for the blowing down. This fast opening causes a suction in the boiler whereby deposits and possible solids are flushed out of the boiler. Simple water treatment processes cannot prevent small amounts of alkaline earths from getting into the boiler ater, thereby causing residual hardness. As a con sequence chemical treatment for removal of hardness in the steam boiler is necessary.These substances form fine sludge deposits which settle out on heating surfaces and the bottom of the boiler. These sludge deposits can form an adherent insulating coating on heating surfaces, resulting in an effect similar to that of hard scale. These insulating layers formed in zones of high heat transfer retard the flow of heat and cause overheating, which may result in deformation and ultimately failure of the affected boiler parts. These sludge deposits impair boiler safety and should be removed by intermittent boiler blowdown.

• KAV1 R1-N Blow-down valve with hand lever. A later equipment with pneumatic actuator is possible without problems.
• KAV2 R1-N Blow-down valve with pneumatic actuator for automatic blowing down in connection with the program-controlled IGEMA magnetic valve type PGM
• Construction as globe valve with flange connection or welding end according to DIN
• Quick closing mechanism for fast closing and opening
• Adjustable stuffing box
• Clamp-in valve seat
• Possibility to lock the valve manually in open position
• Possibility to operate the pneumatic actuator with the control media air or water