Profile: Edwards, Inc. manufactures vacuum pumps. Our robust HT20B is ideal for processes involving large quantities of gases, such as furnaces and coaters. HT20B diffusion pump has a machined, cast aluminium interior for exceptional pumping stability and a stainless steel body to prevent corrosion and ensure process cleanliness. We offer flat panle display, analytical instrumentation and renewable energy services. Our products are used in metallurgy, heat treating, metal injection and steel degassing.