Characteristics of HL sewage equipment:
Hutterer & Lechner Anti-flood valve with stainless steel flap, DN160 [Code number: HL 715]
Hutterer & Lechner Anti-flood valve with stainless steel flap and manual blocking, DN160 [Code number: HL 715.1]
Hutterer & Lechner Anti-flood valve with 2 stainless steel flaps and manual blocking, DN160 [Code number: HL 715.2]