325 Series Pumps

The NLB 325 Series pump is an advanced design quintuplex pump with exceptional flexibility and versatility to efficiently meet the requirements of a wide range of pumping services.  The unit features a simple, rugged design to meet the heavy-duty requirements of continuous operation and to minimize maintenance.

Fluid End Features Include:

• Easily configured for operating pressures from 8,000 to 40,000 psi in under 20 minutes.
• A single stainless steel frame plate and swing-out manifold is used for all operating pressures.
• The design features minimum volumetric clearance and stress, with maximum shock and pressure resistance.
• Passages are drilled to minimize turbulence.
• The valve seat and stuffing boxes are precision-machined from high-grade stainless steel.
• Stainless steel valves have a rugged, double guided design that improves valve life by ensuring alignment.  Seats are beveled and are also made from hardened stainless steel.
• Pump features Colomony®-coated plungers for 8-12K operation and solid tungsten carbide plungers for 15-40K operation.

Power Frame Features include:

• Horizontal configuration provides easy access and low center of gravity.
• Rugged, cast-iron housing with gravity lubrication and large oil reservoir.
• Forged steel crankshaft mounted in tapered roller bearings. Symmetrical design permits easy conversion to opposite-hand drive.
• Large-diameter cylinder crossheads operating in full circular guides, fitted with hardened wrist pins
• Ground crosshead stub shafts with lipped seals to keep water and dust out of crankcase.
• High mechanical efficiency.
• Plunger cover for cleanliness and operator protection.

Additional Information