Ventapipe 15 Air Admittance Valve with 1¼" Universal Outlet - VP15M
Ventapipe 25 with 1¼" (1.1/4") Universal Outlet Size: 1¼" (1.1/4") Standard: BS EN 12380:2014 Air Flow Capacity: 0.5 Please Note: For use in above ground drainage systems to provide a means of ventilation under conditions of reduced pressure when ventilating pipes are terminated inside buildings in accordance with BS EN 12056-2:2000.