Merco Centrifugal Co. ; Merrill Co. ; Pittsburgh Equitable Meter Co. Search this
Notes content:
Centrifugal separators ; "Nordstrom" valves ; "Merco" precipitation processes ; valves for the gas , petroleum , concrete and chemical industries ; "Merco" steam pressure regulators ; "Merrill-Crowe" simultaneous clarification-precipitation process ; "The Flow Line" company publication ; World War II wartime publication ; "Emco Nordstrom" valves ; "Pittsburgh" "Tropic" water meters ; other equipment .