ecodos (LEB - LEG)

LEWA ecodos mechanical diaphragm metering pumps for low-pressure duties: the diaphragm is driven mechanically, so there is no hydraulic oil that could contaminate the medium (oil-free), which suits pharmaceutical and other purity-critical applications. Six output ratings (LEB to LEG), materials 1.4401/1.4404 (AISI 316/316L), PVC, PVDF and PTFE, flow adjustable by stroke length and/or speed (frequency converter) over a range up to 1:50 with ±1% accuracy; vertical or horizontal motor, simplex or multiplex drive units; explosion-proof design up to EX zone 1 on request.

Key technical parameters

• Pressure: low-pressure range, up to 20 bar
• Flow adjustment range: up to 1:50, accuracy ±1%
• Drive: Electric motor (frequency converter or stroke adjustment)
• Diaphragm: mechanically actuated, oil-free
• Materials: 316/316L, PVC, PVDF, PTFE
• Connections: DIN, ANSI, JIS, BASF high-pressure standard
• Explosion-proof design up to EX zone 1 on request
• Suction capability down to 0.1 bar absolute

Media handled

• Liquids: Chemicals, Acid, Alkali, Solvent, Oil (mineral)
• Media properties: Low viscosity, Corrosive

Applications and industries

• Pharmaceutical and chemical metering
• Filter aid (diatomite) suspensions in beer and wine filtration