Macawber Engineering, Inc. specializes in the design and engineering of low velocity, dense phase pneumatic conveying and bul ... k handling processes. True to our core business for over 40 years with thousands of installations, we offer long term, reliable and efficient solutions to process industries worldwide. We are the original patent holder and designer of the Dome Valve®. We operate in all countries world wide with chief company divisions located in the United States, United Kingdom, China, India and Brazil. read more