NOV JWS-165-L Pump

In today's demanding fluid transportation applications, the NOV JWS-165-L (also known as National 165T-5L) is more than just a piece of equipment-it is the cornerstone of operational reliability. With proven excellence in the world's most challenging environments, this pump has become an industry benchmark. Its core value lies in its robust structure, broad applicability, and engineering design philosophy focused on maximizing uptime and minimizing total cost of ownership (TCO).

Its versatility is a key feature, covering the following core applications:

• Saline Water Disposal (SWD) and Water Injection
• Well control, cementing and acidizing operations
• Oil production and pipeline transportation services
• High-pressure fluid transportation

Power Frame: The Core of Stability

Unlike the welded steel plate frame, the JWS-165-L features a robust cast iron power frame.

Vibration damping characteristics. This inherent material property effectively absorbs and attenuates operational vibrations generated by reciprocating motion, thereby reducing harmonic stresses on the entire pump assembly, its foundation, and connected pipelines. Ultimately, this translates to extended service life and enhanced operational stability for bearings, gears, and other critical components.

Gear Transmission System: Efficient and Smooth Power Transmission

To accommodate different prime movers (diesel or electric), the pump features an optional gear reducer with multiple speed ratios ranging from 2.8:1 to 5.74:1, ensuring precise matching with the power source and optimal energy conversion efficiency. This adaptability allows the JWS-165-L to seamlessly integrate into various equipment configurations.

Crankshaft, connecting rod and bearing: born for high load

• The crankshaft is made of forged alloy steel with the journal polished and milled. The forging process makes the grain structure of steel arranged along the stress direction, which provides excellent fatigue strength and toughness compared with the casting, which is very important for the crankshaft bearing the high cycle load of reciprocating pump.
• The connecting rod is made of ductile iron, which combines the excellent casting properties and vibration damping of cast iron with the strength of steel. This material is ideal for withstanding the complex tensile and compressive load cycles experienced by the connecting rod during operation.
• Bearing: The power end is equipped with heavy load tapered roller crankshaft bearing and precision aluminum alloy crankpin bearing. This high specification bearing configuration ensures the reliability of long-term operation under the maximum rated plunger load.

Crosshead and lubrication system

The pump's crosshead is made of wear-resistant cast iron, with bronze bushings and replaceable stainless steel intermediate rods (small rods). This material combination is designed to achieve optimal wear resistance and on-site maintainability.

Hydrodynamic End Structure and Material Philosophy

By offering diverse hydraulic end material options, the JWS-165-L empowers customers to control total cost of ownership (TCO). Selecting the right metallurgical materials for specific applications effectively prevents premature failures caused by corrosion or wear, thereby reducing costly replacement expenses and unplanned downtime.

• Forged steel is the preferred material for applications requiring extreme strength and fatigue resistance, such as high-pressure cementing or fracturing support. Its dense internal structure enables it to withstand the highest pressure cycles.
• Ductile iron: As a strong and cost-effective choice, ductile iron is suitable for normal working conditions, providing excellent strength and wear resistance.
• Nickel-aluminum bronze: This material is the optimal choice for handling highly corrosive fluids such as produced water or seawater used in saltwater desalination (SWD). Compared to steel, it demonstrates superior pitting and crevice corrosion resistance, significantly extending service life in these harsh environments.

Design for maintainability

The hydraulic end's design prioritizes both maintenance convenience and safety. Its bolted or threaded valve cover, combined with a maintenance-friendly stuffing box, significantly reduces downtime and improves operational safety. The pump body features high-quality bolts and nuts for secure fastening, ensuring reliable sealing under high-pressure conditions.

Selecting the right wear parts combination is a systematic process that directly determines the pump's performance and maintenance cycle. We provide a comprehensive range of wear parts options to build an optimized system tailored to your specific application.

PISTON: INTERFACE BETWEEN PRESSURE AND WEAR

• Full ceramic plunger: The preferred choice for applications involving corrosive fluids and fine abrasive particles. The ceramic material's exceptional hardness resists wear, while its chemical inertness prevents corrosion, ensuring extended service life for both the plunger and packing. The ultra-smooth surface further minimizes friction with the packing, thereby prolonging the seal's durability.
• Tungsten carbide coated plunger: When extreme wear or high impact risk is present in applications, the tungsten carbide coated plunger is the ideal solution. The tough coating provides excellent abrasion resistance, while the steel matrix offers impact toughness that solid ceramics may lack.

Valve and valve seat: the heart of hydraulic efficiency

• Design: The design of the wing-guided spherical valve can promote the efficient and laminar flow of fluid, reduce the turbulence and energy loss, and improve the overall efficiency of the pump.
• Materials: The valve body and seat are crafted from premium Nitronic 50. This austenitic stainless steel is renowned for its exceptional corrosion resistance and high strength, outperforming standard stainless steel in performance. This ensures long-term reliability in harsh environments.
• Valve rubber: Made of high-performance polyurethane, the rubber provides an elastic seal that withstands high-pressure cycling and abrasive fluid impact, ensuring reliable sealing and long service life.

packing and stuffing box assembly

• Material Options: We provide a variety of plunger packing solutions, including standard universal packing for general applications, and aramid fiber (Kevlar) packing designed for high-temperature or chemically corrosive environments.
• Packing gland design: The packing gland is constructed from nickel-aluminum bronze or 17-4 stainless steel, ensuring corrosion resistance and durability in this critical sealing zone.

The following data provides engineers and procurement experts with critical information for decision-making, ensuring you can select the most suitable pump configuration for your application.

Table 1: Performance Data of NOV JWS-165-L (Based on 100% volumetric efficiency and 90% mechanical efficiency)

This table enables customers to quickly determine the most suitable plunger size for their specific flow (GPM/BPD) and pressure (PSI) requirements at different operating speeds.

Table 2: Key technical specifications

This table provides a quick reference for the key parameters of the pump, which is convenient for comparison with other pumps and integration into the design of the drilling rig.

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