NOV 14-P-220 Hybrid 7500PSI Mud Pump

 

The superior performance of the HYBRID Fe hydraulic end is due to its uncompromising manufacturing standards. Instead of being cast, the modules are made from high-strength forged alloy steels such as AISI 4130, AISI 4135 or equivalent.

To ensure that each piece is of the highest quality, we implement a rigorous follow-up manufacturing process:

Precision CNC Machining: all modules are finished on an advanced CNC Machining center, ensuring precise dimensional tolerances. This not only ensures the perfect coordination of all parts and seal integrity, but also achieves 100% interchangeability with the original spare parts.

Computer-controlled heat treatment: this is a crucial process. Through a computer-controlled heat treatment process, we have optimized the microstructure of the steel, forming an extremely high hardness on its surface to resist wear, while maintaining toughness at the core, which allows us to improve the mechanical properties of the steel, which enables it to effectively absorb pressure pulsations without producing brittle fracture. This process is the key to prevent erosion and stress cracking.

Stringent hydrostatic pressure test: each HYBRID FE module must pass a hydrostatic pressure test of 11,250 PSI, 1.5 times its rated operating pressure (7500 PSI) , before it leaves the factory. This test fully verifies the combined quality of forgings, machining and heat treatment, ensuring its safety and reliability in the most extreme conditions.

Key features of HYBRID FE (standard configuration)

 

Discharge manifold management: the Hybrid FE connects the three discharge modules with a strong, high-integrity connecting pipe. This design provides a reliable and easy-to-maintain runner that can withstand full discharge pressure of 7500 PSI.

Bonnet sealing technology: the bonnet adopts a field-proven tapered sealing design. The structure can provide safe and reliable sealing effect under high pressure, simplify the installation and disassembly procedures, and further shorten the maintenance time.

Warranty and certification: we are confident in the quality of HYBRID FE and provide a standard three-year, 100% crack-proof warranty.

Strong Fortress: Power End construction and reliability

 

The power end of the 14P220 is an engineering masterpiece designed to reliably and efficiently convert an input of 2200 hp into a powerful hydraulic force.

Frame and drivetrain: the cornerstone of durability

 

Frame Construction: the entirety of the pump is built on an extremely strong welded steel frame. After welding, the whole frame will undergo annealing stress relief treatment, which ensures long-term dimensional stability and prevents distortion when it is subjected to huge working loads.

Crankshaft: as the core of the power end, the crankshaft is an all-in-one, fully balanced design forged from high quality alloy steels such as 35CRMO or 40CrMnMo. After forging, the crankshaft undergoes comprehensive heat treatment to obtain superior mechanical strength and impact resistance, ensuring its ultra-long service life.

Gear system: Power is transmitted through a set of herringbone gears. This gear set is also forged from integrally hardened alloy steel. The herringbone design ensures maximum tooth contact, delivering extremely high torque while running smoothly, with low noise, and excellent resistance to spalling and wear. Its transmission ratio is up to 3.969:1.

Connecting rod and crosshead: the connecting rod is made of heat-treated forged alloy steel. The crossheads are made of high-durability materials such as ductile iron or ASTM A48-83 Meehanite cast iron by precision casting for excellent wear resistance. The crosshead moves smoothly in a replaceable guide made of bearing-grade material such as manganese bronze, ensuring low-friction reciprocating motion conversion.

Bearings and lubrication systems: designed for long life

 

Bearing Configuration: top heavy duty roller bearings are used throughout the power end to ensure smooth, efficient operation and long service life. This includes double-row spherical roller bearings for pinion shafts, double-row tapered roller bearings for crankshaft main bearings, and double-row needle roller bearings for crosshead bearings.

Lubrication system: a complete set of lubrication system is to ensure that the components in continuous high load under the normal work of the key. 14P220 uses a dual system of splash lubrication and forced lubrication. Forced lubrication is driven by an external electric oil pump and is equipped with a screen and filter to ensure clean oil.

 

 

Cylinder liner: the first line of defense against wear and pressure

 

Option 1: high chromium (bimetallic) cylinder liner (Grayloy Type)

Construction: a two-ply structure with a shell made of high-strength forged steel (usually 45 # carbon steel) to withstand significant hoop stresses and an inner liner that fits snugly into the shell through an interference fit.

Material Science: the lining is made of high chromium cast iron alloy with more than 27% chromium by centrifugal casting process. High chromium content gives excellent wear resistance and corrosion resistance.

Manufacturing and hardness: the lining is hardened to a surface hardness of HRC 60-65. Subsequently, the inner bore is precision honed to achieve a mirror-level finish (ra < 0.2 μm) to minimize friction with the piston and extend piston life. The tensile strength of its housing exceeds 900,000 psi.

Performance: provides over 800 hours of reliable service life under standard drilling conditions and is an excellent balance between performance and cost effectiveness.

Option Two: Zirconia ceramic cylinder liner (top performance)

Construction: it consists of a forged steel case with a pressed zirconia (ZRO2) ceramic liner.

Materials Science: compared with traditional alumina ceramics, zirconia ceramics have superior impact strength, fracture toughness and thermal stability. We use zirconia composites treated with a special stabilizer (Y2O3) and designed for extreme conditions.

Manufacturing and hardness: the ceramic liner is honed to an extremely high surface finish (4-8 RMS) , and its surface hardness reaches a staggering > HRC 90(or 92-94 Rockwell C) .

Performance: its service life is bimetallic cylinder liner 5 to 10 times, up to 4,000 to 10,000 hours or more. It significantly reduces piston wear and pump cooling requirements and is ideal for high-temperature, high-pressure, highly abrasive or corrosive mud systems, providing the lowest total cost of ownership for challenging applications.

Piston: the core of dynamic seal

 

Piston core: forged from high strength alloy steel (45 # or 40CR) followed by heat treatment such as quenching, tempering and surface treatment such as phosphating or oxidation for maximum durability and corrosion resistance.

Piston rubber:

Material Options: we offer a wide range of rubber formulations to suit different drilling fluids and temperatures. Polyurethane is the standard option due to its superior tear resistance, wear resistance, and extrusion resistance. Materials such as * * nitrile rubber (NBR) * * are also provided to meet specific chemical compatibility requirements.

Design: Using advanced bonded piston design (such as FAIL-SAFE, Black Cat, dual-duro Type) , the rubber and piston core permanently bonded together. This structure can effectively resist 7500 PSI high pressure extrusion deformation, and reduce heat accumulation, thereby extending the service life. We also provide high temperature resistance options for fluid environments up to 300 ° F (149 ° C) .

Valve and seat: API # 8 full open valve assembly

 

Construction: 14P220 with API # 8 valve and seat assembly. Both body and seat are supplied by
Forged from premium alloy steel (AISI 8620/20CrNiMo) for ultimate strength and impact resistance.

Manufacturing and heat treatment: parts are carburized and heat treated after precision machining. The carburizing process forms an extremely hard wear-resistant layer on the surface of the part, while the core remains tough enough to absorb the large impact load generated when the valve is closed and prevent fracture.

Design and sealing: fully open design and streamlined guide rib, maximize the flow area, thereby reducing the flow rate of fluid, reducing the valve and hydraulic end module erosion wear. The valve uses high-performance adhesive polyurethane valve rubber, can withstand 7500 PSI continuous working pressure and up to 300 °F (149 °C) temperature.

Piston rod: the link to transfer power

 

Material and design: made of heat treated high quality alloy steel and machined to exact tolerances. Standard
The two-piece construction (piston rod with intermediate rod/Shank) , a key maintenance optimization design, allows piston replacement without disturbing the cylinder liner seal, greatly simplifying field operations.

Optional upgrade: Hydra-ligntm self-aligning piston rod: for further performance enhancements, the 14P220 comes with a HydrA-LIGNTM self-aligning piston rod. The system can compensate for the slight misalignment between the power end and the hydraulic end, effectively reduce the eccentric load of the piston, and significantly prolong the service life of the piston and the cylinder liner.

 

 

The following table clearly shows the core technical parameters and performance data of NOV 14P220, providing a quick reference for technicians.

Table 1: NOV 14P220 comprehensive technical specifications

This table integrates data from multiple technical documents and provides an authoritative, comprehensive reference for engineers and purchasing managers to quickly assess whether the pump meets the physical and operational requirements of the rig.

Parameters	Specifications
Type of pump	Triplex single acting piston pump
Maximum input power	2200hp (1640KW)
Rated speed	105SPM
Stroke length	14in (355.6 mm)
Gear ratio	3.969:1
Pinion shaft speed	417 RPM
Hydraulic end (standard)	Nov HYBRID Fe, two-piece forged alloy steel
Maximum working pressure	7500 PSI (51.7 MPa)
Hydrostatic pressure test	11,250 PSI
Valve box API number	Mod. 8
Suction line interface	10"ASA-150 lb. R.J. Flange
Discharge pipe connection	5"API-10,000 psi R.J. Flange
Weight (excluding pulley)	About 86,000 lbs (39,009 kg)
Dimensions (length x width x height)	Approximately 218"X 126" x 84"(5544 x 3194 x 2139mm)

Table 2: performance data-pressure and displacement (GPM) vs. Cylinder liner dimensions

This table is the key performance reference tool for drilling engineers. It visually demonstrates the operating capacity of the pump in different configurations and helps the user select the appropriate cylinder liner size to obtain the ideal displacement (GPM) and pressure (PSI) combination according to specific drilling program requirements.

Cylinder liner dimensions (in)	Maximum pressure (PSI)	Displacement at 105SPM (GPM)	Displacement at 80spm (GPM)	60SPM displacement (GPM)
9.0"	2,795	1215	925	694
8.0"	3,535	960	731	548
7.5"	4,025	843	643	482
7.0"	4,615	735	560	420
6.5"	5,360	633	483	362
6.0"	6,285	540	411	308
5.5"	7,475	454	346	259
5.0"	7,500	375	286	214

Note: Performance data are calculated based on 90% mechanical efficiency and 100% volumetric efficiency.

 

Table 3: Summary of material options for wearing parts

This table concisely summarizes the core information of vulnerable parts, directly responds to the user's core requirements for material details, and provides a convenient and quick reference for maintenance supervisors and procurement teams when ordering spare parts.

Parts	Standard options	Advanced options	Key manufacturing processes
Cylinder liner	High chromium bimetal (HRC 60-65)	Zirconia ceramics (> HRC 90)	Forging, centrifugal casting, heat treatment, honing
Piston core	Forged alloy steel (e.g. 40CR)	Not applicable	Forging, quenching and tempering, phosphating
Rubber Skin for piston	Bonded polyurethane (temperature up to 220 °F)	Bonded high temperature resistant polyurethane (up to 300 °F)	High pressure/high temperature bonding process
Valve and seat	Wrought Alloy Steel (API # 8, full open)	Not applicable	Forging, carburizing, heat treatment
Piston rod	Two-piece alloy steel	Hydra-ligntm self-aligning piston rod	Forging, precision machining

 

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