ecoflow metering (LDB - LDH)

LEWA ecoflow hydraulic diaphragm metering pumps: universal pumps with a patented PTFE sandwich diaphragm and DPS diaphragm protection, designed to API 675 (and VDMA 24284 / 24286-10, FDA) for dangerous, toxic, abrasive, viscous, environmentally harmful or sensitive fluids. Modular system of drive units LDB to LDH / LDHB (hydraulic power 0.14 to 46 kW) and pump heads: M500 (350 bar, up to 19 m³/h), M900 (500 bar, 6 m³/h), M800 (800 bar), M200 / M400 metal diaphragm (up to 1,200 bar, up to +200 °C) and remote heads for up to +400 °C. Spring-retracted diaphragm for safe start-up, suction pressure down to 0.1 bar absolute, in-line or compact boxer arrangement, servo-motor stroke adjustment.

Key technical parameters

• Flow rate: up to 19 m³/h (head M500)
• Pressure: up to 1,200 bar (metal-diaphragm head M200 / M400)
• Fluid temperature: -70 to +400 °C (remote heads)
• Viscosity: up to 100,000 mPa·s
• Hydraulic power of drive units: 0.14 to 46 kW
• Drive: Electric motor, optional servo stroke adjustment
• Standards: API 675, VDMA 24284, FDA
• Materials: 316/316L, Hastelloy, duplex, PVC, PVDF, PTFE
• Suction capability down to 0.1 bar absolute

Media handled

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

Applications and industries

• Oil and gas
• Chemical and petrochemical metering
• Power generation and mining
• Hermetically sealed metering of toxic and hazardous media