Macnaught DD19GN 20mm High-Flow Air-Operated Diaphragm Pump (Max 130LPM)

The Macnaught DD19GN is a high-flow air operated double diaphragm pump engineered for industrial fluid transfer where high volume and low air consumption are priorities. With a maximum flow rate of 130 LPM (35 GPM), this pump is ideal for a wide range of applications involving oils, coolants, diesel, oily water, and diluted chemicals.

Its glass-filled polypropylene body and Nitrile Buna-N (NBR) diaphragms offer excellent chemical compatibility and durability. The convenient side port configuration ensures straightforward installation and flexible piping arrangements.

FEATURES

• Optimized flow: Lightweight spool for faster, smoother operation
• Effortless maintenance: Easy-access air motor simplifies servicing
• Dry-run safe: Operates without liquid, no overheating risk
• Deadhead resistant: Withstands closed discharge without damage
• Self-priming: No manual priming required
• No inline lubrication needed: Lowers maintenance requirements
• Side port design: Streamlines installation and piping connections

SPECIFICATIONS

• Max air pressure: 20–100 PSI (1.37–6.89 bar)
• Inlet / outlet: 3/4" BSPT (F)
• Air inlet: 1/4" BSPT (F)
• Max flow rate: 130 LPM (35 GPM)
• Suction lift: 3 m (dry), 8 m (wet)
• Max solids handling: 2 mm
• Fluid temperature range: 0ºC – 60ºC (32ºF – 140ºF)
• Wetted parts: Glass-filled polypropylene (PPG), Nitrile Buna-N (NBR)
• Air motor: Glass-filled polypropylene (PPG)
• Dimensions: Height 36.8 cm, Width 31.4 cm, Depth 37.3 cm

PACKAGE INCLUDES

• 1 unit of Diaphragm pump