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Griswold Pump ideal for use in potentially explosive environments

Griswold Pump company's standard and low-flow models of its 811 Series ANSI centrifugal pumps are now ATEX compliant, the company recently announced. ATEX refers to the European Union Directive 94/9/EC, a European safety standard for all equipment used in potentially explosive atmospheres.

The certification allows Griswold's 811 ANSI pumps to be used in applications where the mixture of air and flammable materials could cause an explosive atmosphere. These conditions usually exist in chemical plants, refineries, liquid-storage terminals and latex plants.

Griswold 811 ANSI pumps that meet the ATEX directive will be noted with an "A" at the start of the model number. A tag including the ATEX equipment group, category, zones and temperature class will also be added to the pump body. These pump models also feature the “CE” mark, making them compliant with the European Union’s Machinery Directive 2006/42/EC and available for importation into the European Union.

Griswold's 811 Series ANSI Centrifugal Pumps are ideal for applications in potentially explosive atmospheres. Their design includes an open-impeller that minimizes concentrated wear; self-tightening impellers that reduce leaks and failures; the ability to externally adjust the clearance so that peak efficiency is ensured even after wear-area loss; back pump-out vanes that reduce pressure on the shaft seal and bearings; and investment-cast impellers that are ultra-smooth to guarantee hydraulic and mechanical balance, as well as maximized seal and bearing life.