Puwe GmbH
About
PuWe GmbH, based in Vreden, Germany, manufactures piston pumps, flushing systems, and mixing containers for handling high-viscosity, high-solids-content media in agricultural and biogas applications. The company's Kolbenpumpen (piston pump) line spans five models: the W300 at 25 cubic meters per hour and 4 bar for food waste processing, the W315 at 20 cubic meters per hour and 15 bar for heat exchanger and high-pressure applications, the W400 at 45 cubic meters per hour and 4 bar as the original general-purpose model, the W500 at 80 cubic meters per hour and 4 bar with oversized valve handling for larger foreign objects, and the W600 at 140 cubic meters per hour and 2.5 bar for feeding systems and truck filling. All piston pumps feature patented valve systems that handle foreign objects and long-fiber media without clogging, integrated stone traps capturing over 90 percent of debris, and water-lubricated rubber pistons for low-wear operation. Power consumption ranges from 7.5 kW on the W300 to 30 kW on the W600, with all models available with IE3, IE4, or IE5 high-efficiency motors and soft-start or frequency-inverter controls. PuWe also produces Einspülsysteme (flushing systems) in W550 and W650 configurations for liquid feeding applications handling up to 25 percent dry matter content, and the Maxi Mix 6-cubic-meter mixing container for substrate hygienization and blending that processes 6-12 tons per hour at approximately 8 kW average power. While primarily serving agriculture and biogas, PuWe's piston pump technology transfers directly to municipal and industrial wastewater sludge handling.
Key Products
High-pressure piston pump rated at 20 m3/hr and 15 Bar for heat exchanger and high-pressure applications; handles viscous media with integrated stone trap
Compact piston pump rated at 25 m3/hr and 4 Bar designed for food waste processing; features integrated stone trap and optional reverse-pumping
General-purpose piston pump rated at 45 m3/hr and 4 Bar; the original model balancing size, throughput, and power consumption at 11 kW
Large-capacity piston pump rated at 80 m3/hr and 4 Bar; features oversized valve system for handling bigger foreign objects in viscous media
Largest piston pump rated at 140 m3/hr and 2.5 Bar; designed for feeding systems and truck filling of high-solids viscous media
Flushing/rinsing system for liquid feeding with 80 m3/hr throughput capacity, handling up to 25% dry matter content
High-capacity flushing/rinsing system for liquid feeding with 130 m3/hr throughput capacity, handling up to 25% dry matter content
6 m3 mixing and hygienization vessel that blends substrates, macerates fibers, and automatically removes over 90% of stones; processes 6-12 tons/hr at ~8 kW average power
Proprietary control system for PuWe pumps with soft-starter or frequency-inverter integration, continuous parameter monitoring, and fault alarm capability
Hydraulic load-securing cover for trailers that winds from the rear, providing clear visibility during filling; fits vehicles up to 11 m length
Hydraulic load-securing cover for push-off trailers that winds from the front, with short hydraulic hoses and good system visibility
Adjustable hydraulic load-securing cover with swivel arms that can be angled centrally, leaving no protruding parts after installation
Hydraulic load-securing cover mounted below the sight guard, designed for push-off trailers with short hydraulic hoses and clear system visibility
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