• Model number: AVRD tube joint f15 
• This is 2-stage oil-sealed high vacuum rotary pump designed with special focus on durability and reliability. 
• Gas ballast valve is fitted, which can prevent oil contamination due to condensing gases and moisture. 
• Reverse flow prevention mechanism is integrated which prevents any reverse oil flow when power is turned off. 
• Optional oil mist trap can be connected. 
• Optional tube joints are available with wide range of sizes, which can be selected according to vacuum-line used.