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Wellpoint Dewatering Piston Pumps

Wellpoint dewatering pumps remove groundwater to temporarily lower the water table, creating dry conditions for underground construction, tunnelling, trenching, civil engineering and maintenance works.

Piston pumps operate on the positive displacement principle, pushing extracted groundwater to the discharge point. They are engineered for shallow excavations where multiple small-diameter wellpoints must continuously remove water to maintain a safe, dry work zone.

One of their key advantages is the ability to pump both water and air. As groundwater levels drop, wellpoint systems entrain large volumes of air — a condition piston pumps handle with ease. Their ability to run dry indefinitely makes them particularly well-suited for wellpointing applications.
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Remko Green RWPP Pump
  • High-vacuum piston design
  • Continuous wellpoint and trench dewatering
  • Strong suction lift for deep drawdown
Applications
▫️Construction Dewatering
▫️Wellpoint Dewatering
▫️Foundation and footing preparation
▫️Under Drain Sock Dewatering
▫️Ground Water Table Lowering
▫️Remediation and Reclamation
▫️Excavation sites
Benefits

Pumping flowrates in excess of 90 m³/hr (25 L/sec or 1500 LPM)
Excellent suction capabilities (up to 9.5m) and Self-priming
Run dry capability for longer periods
Long service intervals of 1500 hrs
Compact stackable canopy for easy storage (Can stack 3 canopies)
Galvanised stone catcher with cleaning port for pump protection
4” or 6” suction and discharge piping with Bauer quick connectors
Noise levels less than 75 dB(A) @ 1m.

Self-Priming Pumps. Engineered to Perform.
RWPP-100 — Wellpoint Dewatering Piston Pump (100mm)
A compact, high-vacuum piston pump designed for small-to-medium wellpoint systems and trench dewatering applications.
  • Strong suction for shallow and mid-depth wellpoint lines
  • Reliable vacuum consistency across varying soil conditions
  • Handles air-water mixtures without performance loss
  • Ideal for civil, plumbing, utility, and small construction sites
  • Max Flow: 35 m³/hr (9.7 L/sec or 583 LPM)
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RWPP
RWPP-150 — Wellpoint Dewatering Piston Pump (150mm)
A high-capacity wellpoint pump built for large civil works and long wellpoint installations requiring deep drawdown and stable groundwater control.
  • Delivers strong, continuous vacuum for extended multi-well systems
  • Excellent solids and air-handling characteristics
  • Engineered for long-duration civil infrastructure projects
  • Effective in fine sands, silts, and unstable ground conditions
  • Max Flow: 90 m³/hr (25 L/sec or 1500 LPM)
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1.5 4_ Wellpoint Dewatering Pump

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Need a piston pump for wellpoint or trench dewatering?

Our team can help you select the correct RWPP model for your soil conditions, depth, well spacing, and groundwater profile.