Ergonomically optimized lever tap for fast and safe delivery of all acids and alkalis; long-lasting construction; different outlet nozzles for different applications available; less effort on activating due to the ergonomic lever; the optimized valve provides for easier handling; sensitive measuring; higher flow rate; improved operational safety due to optimized seal; novel swivel joint with rotary balls guarantees absolute tightness even under pressure; safety guard prevents accidental activating of lever; big lifting eye for easiest storage; observance of the FLUX CI.