Non Return Valve Dual Size for 1 1/2" Hose or 25mm/ 40mm Caravan Boat RV ValveFREE POST AUSTRALIA WIDE! NON RETURN VALVE Stepped A compact dual size non return valve made from re inforced nylon with neoprene valves and stainless steel fasteners. Dual barbed ports size suits 25mm (1") and 40mm (1 1 2") hose. Australian Made. PART NO: 45458 GET IT QUICK! SAME OR NEXT BUSINESS DAY DISPATCH EXTRA 10% OFF ALL MULTI BUYS AT CHECK OUT (ON ALL PRODUCTS)