GAST, the designer and manufacturer of precision air products and member of the IDEX Corporation, is introducing a new range of vacuum pumps and compressors. These new products have been designed to be simple in operation, robust and an effective source of compressed air.
The three pump and compressor ranges include sixteen oil-free and oil-lubricated rotary vane models and, in a first for the organisation, four claw pump models. Announcing the new ranges, Gast Group’s Andrew Lidington, said:“GAST is already renowned as a world-class manufacturer of vacuum pumps and compressors and these additions to our portfolio will provide customers with products that, compared to our traditional offering, can deliver even greater flow and deeper vacuum. The addition of claw pumps also perfectly complements our portfolio and opens up new industries and sectors that we haven’t been able to participate in previously.” says Andrew.
“Using simulation software and the latest manufacturing techniques, we believe that the performance of our new rotary vane and claw pump models are class-leading. The range is also more environmentally-friendly than ever and, thanks to extended maintenance schedules, total cost of ownership is also significantly improved.” he says.
Claw pumps are sometimes seen as an often-overlooked technology due to a slightly higher initial cost. However, says GAST, compared to oil-free rotary vane, claw pumps use significantly less horsepower to provide similar vacuum capability. They also provide 100 per cent duty cycle and, with no carbon vanes and significantly less gear lubricant to replace, are quicker, easier and cheaper to maintain.
With only moderate energy consumption and very high efficiency, GAST’s four new claw pump models — PA.155, PA.315, VA.155 and VA.315 — use contactless rotors that are synchronised by gears without any lubrication in the pumping chamber. This frictionless operation avoids any residue (generated by rubbing during rotation) from contaminating the air supply; and means lower maintenance and operating costs, longer lasting performance and improved total cost of ownership. Nominal capacities are from 155 to 250m3/h at 50Hz, with vacuum capability to 150mbar(abs) and pressures up to 2bar, the GAST claw pump range is ideal for numerous vacuum, compression, aeration, extraction and drying applications in sectors including printing, environmental, medical, bulk material handling, CNC machining and vacuum hold-down.
Oil-Free Rotary Vane Pumps — Adding to an already large portfolio of rotary vane pumps, two new oil-free models, the SB.16 and SB.40, feature an industrial Monobloc design with the rotor assembled directly on the motor shaft. This direct-drive design means fewer moving parts, making these new dry vacuum pumps extremely compact, reliable and easy to maintain. Additionally, a rear centrifugal fan ensures optimal cooling of the pump and each model is equipped with protective filters at the inlet and silencers at the outlet. Both models are also suitable for use as compressors.
A third model, the SC.100, has the rotor installed on the shaft and fixed by two bearings, with the motor being connected by a flexible coupling. The fan is installed between the pump housing and motor to ensure optimal cooling; and a robust and compact housing provides protection and keeps noise levels extremely low.
GAST’s new oil-free rotary vane models offer nominal capacities from 16 to 100m3/h at 50Hz. All models provide vacuum in excess of 120mbar(abs) and are ideal for applications including printing, conveying, wood/plastic presses, automated packaging and pick and place operations.
Oil-Lubricated Rotary Vane Pumps from Gast suit applications as diverse as laboratory conditioning/refrigeration appliances, mass spectrometry, packaging, medical equipment, thermoforming machines and glass and marble machining, Tghe new ten-model range of oil-lubricated rotary vane pumps are seen as ideal where the intake flow may require higher flow and deeper vacuum.
Additionally, and for applications where intake vapour is considerable, a WR version also features an integral system that separates oil and water condensate, which is then expelled when the pump is stopped. All six oil-lubricated models offer nominal capacities from 8 to 305m3/h at 50Hz and total final pressures between 2 and 0.1mbar(abs).