This pump is made from readily available materials and has been shown to achieve a. Use extreme caution when working with vacuum this pump needs a. Diffusion vacuum pumps use highspeed steam direct injection pumps at the bottom of the pump exhaust, where the gas molecules in the throat are decomposed. Because of its simplicity, high performance and low initial cost, the diffusion pump is the primary industrial high vacuum pumping mechanism. When the oil view diffusion pump oil selection online becomes hot enough to vaporize, the oil vapors rise up the center of the pump and exit the nozzles at a downward angle. Agilent diffusion pumps offer high pumping speeds, high throughput, high tolerance forepressure, excellent backstreaming characteristics, low ultimate pressure, and longterm reliability. For generating an oilfree vacuum with oilsealed backing pumps. Diffusion vacuum pump types vacuum pump evp vacuum. Diffusion pumps are vapor jet pumps that work on the principle of momentum transfer. Diffusion vacuum pumps are one of the oldest highvacuum pumping.
In this system the oil is boiled by a heating with a. Diffusion vacuum pumps diffusion vacuum pumps are one of the oldest high vacuum pumping technologies and provide the highest pumping speed at the lowest purchase cost. They are built on a dependable pumping design that can provide stable highvacuum pressures down to the lq8 to rr range. Catalog of agilent hs and vhs diffusion pumps for high vacuum. The diffusion vacuum pump construction consists of an oil boiler connected to a central multistage jet assembly. Please look up the definition of a diffusion vacuum pump before continuing.
Diffusion pump is an oilbased vacuum pump, that is used for obtaining different levels of vacuum even high vacuum of 10 powered 9 pascal. Oildiffusion vacuum pumps the oil diffusion pumps and oil vapor jet pumps from leybold are ideally suited for industrial high vacuum applications. Santovac 5 diffusion pump fluid of santovac fluids, inc. Ideal vacuum catalog section 9 diffusion vacuum pumps. The hsseries diffusion pumps come with full thermal protection and optional quickcool coils. Complete model listing with specifications, drawings, pictures, ordering information and applications. They are built on a dependable pumping design that can provide stable high vacuum pressures down to the lq8 to rr range. They are characterized by superior vacuum performance data and are welladapted as reliable components in medium vacuum and high vacuum systems due to their rugged design. The user should read this instruction manual and any other additional information. It wasnt that long ago when you could walk into any vacuum laboratory and find a vapor diffusion. Diffusion pump working principle diffusion pump oil by. Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. Agilent technologies diffusion pump operational manual.
Agilent varian diffusion pumps vacuum science is our. They were the first type of high vacuum pumps operating in the regime of free molecular flow, where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics. In 1915, wolfgang gade hosted and used mercury vapor, which is a high vacuum free molecular flow in which gas molecules move better than traditional hydrodynamic diffusion understanding, regime operates pump type i. Because it is a high vacuum pump, it must be backed by a. The heated oil is ejected from the jet assembly at supersonic speeds and the process gas molecules are entrained in the oil jet flow and transferred through the pump body by the heavier oil molecules momentum. Diffusion vacuum pumps df 2800 a busch vacuum pumps. Oil diffusion pumps are still a widely used type of high vacuum pump. Improved design features for your vacuum requirements dij oil diffusion pumps are wearfree high vacuum pumps without wearing and moving components.
Diffusion vacuum pumps diffusion vacuum pumps are one of the oldest highvacuum pumping technologies and provide the highest pumping speed at the lowest purchase cost. Startstop switch for manual operation of the turbomolecular pump. A rotary vane vacuum pump is an oilsealed rotary displacement pump. Oil for diffusion pumps, for different fields of application. Scroll pumps are an excellent alternative to rotary vane pumps where oil free.
Dij oil diffusion pumps are wearfree high vacuum pumps without wearing and moving components. This process moves the gas molecules from the low pressure inlet flange. Maintenance and troubleshooting of oil diffusion pumps agilent. Because it is a highvacuum pump, it must be backed by a roughing pump that can generate and. At the bottom, you can see the heaters that sit just below the oil. The pumping effect of these pumps is created through the. Diffusion vacuum pumps busch vacuum solutions global.