Vacuum Techniques Pvt. Ltd. Manufactures Stainless Steel Fabricated Diffusion Pumps. Vacuum Techniques Pvt. Ltd. Is an ISO 9001:2000 certified company. Vacuum Techniques Pvt. Ltd. Offers Vacuum Instruments, Vacuum Components, and Custom Built Systems. The Stainless Steel Fabricated Diffusion Pumps are designed and manufactured to suit the needs of both Industrial and Laboratory applications. The superior pumping speed of these pumps makes them suitable for Research and Development and many industrial applications. The main body is fabricated from Stainless steel and the jet assembly is manufactured from aluminium/Stainless steel. These diffusion pumps can achieve better vacuum with DC704 oil as it can take more thermal shocks from air exposure. They offer higher pumping speeds, low back streaming characteristics, low ultimate pressure and long term reliability. The 3" pump can be air-cooled or water-cooled. The larger pumps are all water cooled.