Vacuum pumps meet Atex requirements
An
Edwards product story
Edited by the Engineeringtalk editorial team
Mar 9, 2006
Atex category one-certified liquid ring vacuum pumps safely evacuate wet and dry gases within internal zone zero hazardous chemical environments, helping companies comply with Atex directive 137.
BOC Edwards has introduced an Atex category one-certified liquid ring vacuum pump range.
The pumps safely evacuate wet and dry gases within internal zone zero hazardous chemical environments, helping companies comply with Atex directive 137.
Following a detailed product development programme, the pump is now a certified category one item for operation in zone zero applications.
This means it provides protection against a rare malfunction in environments where there is a high possibility of explosion following an ignition, such as in chemical processes with flammable atmospheres.
"With the June 2006 deadline for compliance with Atex 137 fast approaching, plants are under increased pressure to ensure that processes are Atex compliant", said Phil Rawlinson, Business Manager for Industrial Systems at BOC Edwards.
"As a leading vacuum equipment manufacturer, it is our responsibility to make sure that we have a reliable, cost-effective product for our customers".
Each Atex category one pump is fitted with two switches that monitor the flow and pressure in the external shaft seal flush.
The operator is alerted should any changes in the lubricant availability occur, and the mandatory control circuit closes the pump system down before the pump overheats.
This ensures that the pump stays within the specified temperature class and eliminates the risk of ignition.
Both single and two stage pumps are available in the pump range, which comprises the SHR, Alpha and AL series.
Single stage pumps can pump up to 11,000m3/hr and operate continuously at all suction pressures from atmospheric down to 40mbar.
Two stage pumps have suction capacity up to 7500m3/hr with more efficiency at lower pressures.
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