'PVC Spring Check Valve, 1/2 in. IPS S X S, White; Down the Mouth view of the NDS White 1/2 in. PVC Spring Check Valve (NDS 1011-05, NDS 1012-05) showing the flapper which controls the flow of water'
product101105WHS101205WHSO1c'NDS 101105 101105 NDS 101205 101205 flow management wa