- Model 325 Series - High-Pressure Water Jetting Systems

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The 325 Series water blasting units are quintuplex versions of the 225 Series. What that means is that opposed to three plungers, these have five, allowing them to run at higher horsepower and produce higher flows. Because these units use the exact same fluid end components as the 225 Series, they are a perfect next step when higher horsepower is needed. Models are available ranging in horsepower from 365 to 450 hp (272-336 kW) and with pressure from 8,000 to 40,000 psi (552-2,800 bar).

These units are all built around the 325 convertible pump.  This pump, with its quick-change, in-line fluid end design, has fewer parts for increased operating efficiency and simpler maintenance. And, it requires only a simple conversion kit to operate at pressures between 8,000 and 40,000 psi (552 and 2,800 bar).

The NLB 325 Series units are built to the exacting standards that have made NLB equipment the contractors choice for over 40 years. These trailer mounted units come standard with features like four wheel electronic brakes, full D.O.T. lighting package, and heavy-duty axles.  All operating controls, including the pressure compensating by-pass valve and pressure gauge with snubber, are mounted on a separate accessory manifold, which provides additional protection for these important components.

NLB's newest line of water jetting units are built around the innovative model 325 convertible pump. This quintuplex pump, with its quick-change, in-line fluid end design, has fewer parts for increased operating efficiency and simpler maintenance. And, it requires only a simple conversion kit to operate at pressures between 8,000 and 40,000 psi (552 and 2800 bar).

The NLB 325 Series units are built using the same rugged, reliable designs that have been field proven for over 40 years. The trailer mounted unit comes standard with features like four wheel electronic brakes, full D.O.T lighting package, and heavy-duty axles. All operating controls, including the pressure compensating by-pass valve and pressure gauge with snubber, are mounted on a separate accessory manifold, which provides additional protection for these important components.

  • Internal gearing eliminates the need for large pulleys or belts, greatly decreasing the pump's overall footprint.
  • Forged steel crankshaft mounted in heavy duty bearings. Drive pinion output shafts on both sides of pump allow for opposite-hand drive.

Pumping system includes a continuous duty six cylinder diesel engine rated for:

  • Model 405 - 400 hp (298 kw)
  • Model 365 - 365 hp (272 kw)

  • Slow running plunger pump built from high-grade stainless steel and provides unprecedented reliability.
  • A single accessory manifold for 8K to 24K operation with pressure gauge, rupture disc and by-pass valve.
  • Lightweight and trailer mounted for ease of mobility.
  • Water pressure actuated throttle control monitors operator demand and adjusts output.
  • Pump can be configured for pressures from 8,000 to 40,000

  • Heavy-duty tandem axle design
  • 16' heavy duty tires (40.65 cm)
  • D.O.T. lighting package
  • Heavy-duty fenders
  • Electric brakes
  • Industrial grade enamel paint
  • Size: 90' wide x 185' long x 81' high approx.
  • (2.3 m wide x 4.7 m long x 2.0 m high)
  • Weight: 12,900 lbs. (5,851 kg) approx.

  • Slow running NLB Model 325 reciprocating pump
  • Five plunger mechanical lubrication
  • Heavy-duty V-belt drive with guard
  • 175 gallon (662 l) aluminum fuel tank
  • 12 or 24 volt electric start
  • Inlet water filter
  • 30,000 lb. oil-filled pressure gauge with snubber
  • Accessory manifold with by-pass valve
  • All necessary plumbing and operating controls
  • Water pressure actuated throttle control

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