pre-roughened connection thread for easy sealing | wall connection 1/2" | outlet 3/8" | with length compensation | with compression nut Ø 10 mm | outlet 3/4" | with hose connection | grease chamber headpart | non-return valve type EB | long connecting shaft | ergonomic handle | marking: neutral | metal push-on escutcheon Ø 55 mm | for combination with pipe ventilating valve type HB 41 239 000