triplex mud pump schematic factory

triplex mud pumps and triplex mud pump parts meet the industry standards established by the American Petroleum Institute (API). As a global supplier of quality oilfield equipment to the oil and gas industry, we ship our products around the world.

Besides triplex mud pumps and triplex mud pump parts, we supply drilling rigs, workover rigs, top drives, drilling equipment, blowout preventers, BOP control systems, choke and kill manifolds, well service pumps for well cementing and hydraulic fracturing, wellhead equipment, casing heads, tubing heads, X-mas trees, FC type gate valves, etc. Please visit our company website

We supply unitized mud pump packages driven by DC or AC electric motors or diesel engines for electric and mechanical drilling rigs. The client can select DC or AC motors and diesel engine brands such as Caterpillar, Detroit, Cummins or others. Our unitized mud pump packages including everything on the skid and usually they are ready to work at delivery.

Mud King Products offers a full line of Triplex Mud Pumps from 165HP to 1600HP. All of our P Series as well as F Series are fully interchangeable with the OEM. All MKP pumps are manufactured under API License. Our pumps are thoroughly inspected at the plant and a second quality inspection is performed in the USA.

Manufactured to withstand the toughest drilling and environmental conditions, our K-Series triplex mud pumps are ideal for all drilling applications. This legacy product features a balanced forged-steel crankshaft and Southwest Oilfield Products ‘L” Shaped modules which is essential to minimize wear, noise, and operating vibrations. These attributes are essential when drilling deeper high pressure formations, long laterals and when handling corrosive or abrasive fluids and slurries.

Every American Block triplex mud pump is manufactured and fully load tested before leaving our manufacturing campus, and is available in sizes ranging from 800 HP to 2200 HP. The American Block K1600 HP Mud Pump is also available in a 2000 HP up-grade version, when more HP is needed in the same 1600 HP footprint.

The NOV 12-P-160 Mud Pumps includes (3) Three New National 12-P-160 Triplex Mud Pumps 1600 HP, 7-1/4″ bore x 12″ stroke, single acting. 5000 PSI fluid ends. 1600 HP Bare Mud Pumps are currently configured for Offshore Service. The NOV 12-P-160 Mud Pumps are located in Houston and ready to be unitized for service.

Forged Steel crankshaft, Individual forged steel two piece interchangeable standard modules, 6-1/2” mission fluid king liners, Standard polyurethane valves and seats, Two piece fast change piston rods, Supreme pistons, Metal to metal liner retention, Clamp type liner and piston rod connections, Fast change valve covers standard, Piston liner lubricant spray system, Liner spray pump, Power end lube system with filter. Mounted on Integral two runner skid, Suction Manifold with vertical suction stabilizer, Suction line pressure relief valve, set for 70 PSI

Includes: motor supports, motor frame, tensioning screws, 2 V-belt guards, 2 pump Sheaves, 2 motor sheaves, banded V-belts, Holes to be drilled to accept EDM D79 Or GE-752 Traction Motors

National Oilwell Varco (NOV) is an American multinational corporation based in Houston, Texas. It is a leading worldwide provider of equipment and components used in oil and gas drilling and production operations, oilfield services, and supply chain integration services to the upstream oil and gas industry. The company conducts operations in more than 600 locations across six continents, operating through three reporting segments: Rig Technologies, Wellbore Technologies, and Completion & Production Solutions. National Oilwell’s two main predecessors, Oilwell Supply and National Supply, were founded in 1862 and 1893, respectively. These two companies manufactured and distributed pumps and derricks.

Mud pumps are the heart of a drilling operation. TSM designs and manufactures extremely reliable and easy-to-maintain mud pumps, eliminating unnecessary maintenance and downtime.

Centerline Manufacturing is committed to the highest level of customer service quality.  Every Centerline pump is comprehensively and repeatedly tested at diverse pressure levels to assure that it goes to our customer in perfect operational order. Centerline technicians work to ensure that our customers fully understand the operation of the model being delivered.  If a customer"s pump is down, we understand the importance of timely response and parts availability.  Centerline technicians will assess the problem and make repairs to bring the pump back into new specification. The Centerline mud pump technicians are well versed and qualified to operate and repair any product that is provided to the customer.

Since the modern mud (or slush) pump was built approximately 60 years ago, the industry has widely accepted the three cylinder or triplex style pump. Triplex mud pumps are manufactured worldwide, and many companies have emulated the original design and developed an improved form of the triplex pump in the past decade.

As in all single acting pumps, the piston exerts a load on the crankshaft. The load is then transmitted to the crankshaft main bearings, which are set in their retainers in the pump frame or housing (see Figure 2).

That the crankshaft is subjected to extreme bending loads and stress concentration areas is one of the drawbacks of the triplex design. Experience shows that all triplex pumps eventually exhibit crankshaft cracking if the operator is using the pump at higher loads and pressures, which is now common as drilling contractors are facing deeper, longer sections to drill. In the past, drillers rarely pushed the performance limitations of triplex pumps; 5,000 psi rated pumps were usually only operated at a maximum of 2,800 psi 90 percent of the time. Now contractors are encouraged to run pumps at the much higher pressures around 4,300 psi, only leaving a safety margin below the pressure relief valve setting. This means the crankshaft is subjected to extended maximum load, which inevitably shortens time to failure, probably exponentially.

Some may suggest that an increase in the number of pistons to improve flow rate will also reduce piston load. Although the middle piston load may be reduced for the same overall pump horsepower, the distance from the main bearings to the middle cam increases, which is not advantageous. For example, a five cylinder pump with the middle cam 50 in from the main bearing will have the same bending moment as a triplex with a 30 in middle cam to bearing distance. However, installing bearings close to the cams can reduce the cyclic failure problems on any pump.

For the drilling industry, the problem with this design is that few have managed to design a crankshaft where bearings can be installed anywhere other than at the crankshaft ends. Consequently, most pumps currently available have crankshafts unsupported close to the middle cam. With the middle area of the crankshaft unsupported, crankshaft failure is inevitable.

A triplex pump with a large load acting on the middle of the crankshaft of approximately 120,000 lbs and a typical distance of about 30 in from middle cam to either main bearing will exert a bending moment of 300,000 lb-ft on the crankshaft adjacent to the main bearing. If the bearing is not spherical, the bending moment where the shaft meets the bearing will coincide with the point on the shaft that the crank can no longer bend because it is restricted by the fixed bearing, which creates huge stress concentration. That load comes and goes cyclically every revolution of the pump. If the pump is rotating at 100 rpm or strokes, then in one week of drilling the crank will experience one million cycles of 300,000 lb-ft effectively switching on and off.

Another symptom of crankshaft deflection or bending is abnormal main gear wear patterns. The high unsupported load in the middle of the crankshaft effectively bows the shaft and consequently the bull gear is moved off alignment, and a strange wear pattern may appear on the gears. Although this is an undesirable occurrence, it is of little importance compared with crankshaft failure. It does explain abnormal wear on a pump used continuously at high pressure.

A pump that addresses these issues may be the solution. A quadraplex has minimal bending moments due to the close proximity of the main bearings to every cam (see Figure 7).

A fully assembled crankshaft is the best and only way to install multiple bearings close to the cams. Even though there is minimal flexure in this design, spherical bearings eliminate stress concentration or point loading. With cam to bearing distances no more than 10 in, the bending moment on a quadraplex crankshaft will be one quarter that of the triplex or five cylinder pump.

In an environment where few advances have been made in mud pump technology in the last 50 years, designers in the mud pump sector of the drilling industry can develop workable solutions to the problems and limitations inherent in triplex pumps.

The future of mud pump design will involve a solution to excessive crankshaft bending moments and address other needed areas of improvement, including piston speed, module replacement in the field, quality of discharge pressure and smoothness of flow-all combined with ease of transportation.

At BOPM, we constantly maintain 5 million worth of mud pump parts on the shelf at our Houston warehouse location. It includes modules, liners, extension rods, piston rods, pistons , threaded rings, caps, valve covers, valve guides, valves, seats etc. for all major brands of pumps: Gardner Denver®, Ideco®, Emsco®, National®, Oilwell®, Skytop Brewster®, Lanshi(3NB1300C) ®, Bomco ®, HH ®.

BOPM offers a complete line of interchangeable fluid end modules and accessories for triplex mud pumps, such as National, Emsco, Gardner Denver, Bomco, Ideco and Oilwell. We offer both standard OEM style replacement parts and Two piece “L” Shaped fluid ends.

Our high-strength, triple reduction, forged steel triplex fluid end modules are made from highest alloy steel. Heat treated for long working life, they are machined to perfection and packaged for delivery with anticorrosion protection. The precisely made jewelry-like exterior finish reflects our superior quality.

BOPM piston rods are made with premium grade, heat treated alloy steel. The rods offer excellent resistance to fatigue, corrosion and heavy loads. A full line of piston rods are available for various pumps.

BOPM extension rods are made from high strength alloy steel, and are either heat treated or chrome plated. The rod offers excellent resistance to fatigue, corrosion and heavy loads. BOPM extension rods are machined and polished to ensure a perfect seal to protect the mud pump gear end.

All of our gear set adopt high-end carburization heat treatment and precise grinding machining to offer unparalleled durability; first we use high strength alloy steel, then adopt the Carburization heat treatment to enhance the hardness and wearability, finally adopt the grinding fine machining to ensure the smooth gear teeth surface; Resulting in consistent and rugged performance throughout pump operation.

BOPM bonded urethane pistonsare constructed of urethane, bonded to a steel hub. The double durometer urethane is designed to provide optimal performance in oil or water based mud and high drilling pressures.

BOPM Replaceable Rubber Pistonis made with tough and durable Buna N rubber for all pressures, and is ideally suited for water-base mud. A special processing of the fabric provides an unusually waterproof bond of fabric to piston which assures longer life.

BOPM Bonded Rubber Pistonis made with tough and durable Buna N rubber for all pressures, and is ideally suited for water-base mud. A special processing of the fabric provides an unusually waterproof bond of fabric to piston which assures longer life.

Our precise equipment design and production processes reduce wear and tear, as well as, maintenance downtime and costs. Our precise machining makes shimming obsolete; the pump is ready to use after set-up and runs smoothly throughout the operation. Very low noise and vibrations levels increase the HSSE performance.

With a large variety of drives, motor and skid configurations, HMH provides a mud pump solution for any project and drilling requirement. We deliver high pressure triplex mud pumps with a maximum discharge pressure between 5 000 and 10 000 psi and power ratings between 1 000 and 2 200 hp.

Our mud pumps reduce service costs and increase operational efficiency. Our unique gear driven drive has an extended lifetime of up to 50 000 hours and is more durable than traditional chain or belt driven drives. Our hydraulic quick release system allows fast and safe replacement of fluid end parts.

The 1600 hp mud pumps are designed to circulate drilling fluid under high pressure (up to 7 500 psi) down the drill string to support any project requirements.

The 2200 hp mud pumps are designed for circulating drilling fluid under high pressure (up to 10 000 psi) down the drill string to support especially deep drilling operations.

Triplex mud pumps including F-500, F-800, F-1000, F-1300, F-1600, and F-2200, SDP-1000, SDP-550, SD-EW-446 triplex mud pumps, and mud pump parts & expandables for various OEM pumps in the industary. The unitized mud pump packages driven by AC/DC motors or diesel engines (Caterpillar, Detroit, Cummins, etc.).