supply of supply of set of air vent valve (breather valve)supply of set of air vent valve (breather valve),supply of set of air vent valve (breather valve) for 30 litre auxiliary lhb roof water tank and vacuum valve (1) air vent valve with shut off valve having 3/8 bsp to rcf drg. no.lw63150 alt-e, item no. 4, qty./set-01 nos. (2) vacuum valve g-1/2 to rcf drg. no. lw63150 alt-e, item no.-3, qty./set-2 nos.(warranty period: up to 30 months from the date of supply) m ake: m/s. hans h.voss tulpenweg or m/s. calefi or m/s. watts industries italy or equivalent [ warranty period: 30 months after the date of delivery ] ] => limited