Williams Pumps revolutionized the natural gas industry in 1965 when it developed the first pneumatically driven metering pump designed specifically for the oil and gas industry. Powered by air or gas, the pneumatic pump injects chemical safely into hazardous or explosion-proof environments making it the right choice for remote locations where safety is the top priority. Williams pumps set a new standard of precision and safety while offering the added benefit of simplicity and value to our customers.