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Nordson EFD has released the Optimum Clear Flex Piston dispensing solution that is capable of achieving consistency in results when dispensing viscous liquids.

Optimum Clear Flex Piston helps to reduce the bounce in the fluid by creating a tighter seal between the piston and the fluid than other pistons on the market. Pliable material used to make the new piston allows it to bend under pressure and create the tighter seal.

The seal tightness ensures that no air passes by the piston, avoiding piston separation and pulsing during dispension.

The tight fit of the piston will also help in reducing fluid waste substantially, which will be effective for highly viscous or filled materials such as greases, pastes or solder paste, where piston bounce is a known problem.

Nordson EFD global product line manager Brian Dodier said: "Entrapped air is the leading cause of piston bounce in air pulse pressure dispensing. In piston bounce conditions, micro-bubbles and air pockets can surface between the piston and fluid. As this air builds, a lack of positive compression is created on the fluid. When this pressure releases, excessive material can be dispensed, leading to inconsistent deposits. The Optimum Clear Flex Piston minimises piston bounce by preventing air from becoming entrapped."

All the Optimum dispensing components manufactured by the company are produced silicone-free by Nordson EFD in the US and are certified safe for industrial use.

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Image: Nordson EFD’s OptimumClear Flex Piston will be effective in preventing wastage of fluid. Photo: courtesy of Nordson Corporation.