Envirex Type Replacement Deaerator Trays and Spray Valves Envirex Deaerator spray valve threaded 390-20 Envirex Deaerator spray valve 3 in. threaded 390-34 Envirex Type Deaerator tray Envirex – Envirex – Great Lakes Deaerator Trays & Spray Valves Envirex – Envirex and Great Lakes Trays. SS Heating Tray SS Deaerating Tray
