Bystudor

the bystudor product range is manufactured by studor, the world market leader in drainage ventilation and air admittance valve (aav) technology. studor is an international group of companies that solely specialises in technologies related to drainage systems ventilation and drainage pressure fluctuation. the bystudor range of products, which provide effective drainage ventilation, should be on every plumber’s parts list: -handi-vent 4 – a compact, high functioning air admittance valve (aav) for drainage ventilation. -trap-vent – a combined trap and aav for group venting with a compact design. -maxi-filtra – a practical two-way vent for external drainage systems and septic tanks. problems with residential, and some commercial, drainage ventilation systems can be generated by negative pressure within drainage branches (causing induced siphonage). this can result in toilet, kitchen and shower smells. drainage ventilation systems incorporating the bystudor products provide the necessary ai