Sterling Type Replacement Deaerator Trays and Spray Valves Sterling Deaerator spray valve 2 bolt Duel cone PN500 Sterling Deaerator Spray Valve 2 bolt PN400 Sterling Deaerated Trays Rivited T37 11X4X37 T30 11X4X30 T24 11X4X24 Sterling Type Replacement Deaerator Spray Valves