Home / Plumbing / Brassware / 15Mm Double Check Valve Dzr Customer matched zone "UK" View basket “1/4″ Brass Air Vent” has been added to your basket. Sale! 15Mm Double Check Valve Dzr£3.53 Original price was: £3.53.£2.99Current price is: £2.99. This product is available for pickup in Orpington. 15Mm Double Check Valve Dzr quantity Delivery Store Collection SKU: 32901WC01 Category: Brassware Product ID: 6831 Reviews Related products Radiator Plug & Vent Pack £1.71 Add to basket 1/8″ Bsp Brass Manual Air Vent £0.59 Add to basket Alloy Air Vent Key £0.36 Add to basket 1/2″ Bsp Brass Air Vent Cp £1.54 Add to basket