Your Professional L.J.R. Mud Pumps Supplier
We are a certified manufacturer of mud pumps, plunger pumps, and fracturing pumps, supplying complete pump systems, accessories, and centrifuges for oil drilling, mining, and industrial use. With API 7K and ISO 9001 certification, advanced CNC machining, and full in-house testing, we deliver reliable equipment for high solids, high pressure, and harsh environments. Our products are widely applied in oil & gas drilling, mining slurry transport, environmental engineering, and high-pressure fracturing operations.
Quality Control
Multi-axis CNC machining and complete testing systems ensure consistent quality, verified performance, and full traceability for every critical component.
Global Market Experience
Strong performance in North America, Russia, and the Middle East supports reliable supply and service.
High-Quality Service
From pre-sales engineering analysis to installation, training, and after-sales maintenance, we help customers reduce risk, improve uptime, and extend equipment service life.
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![L.J.R EWS-440 Pump]()
L.J.R EWS-440 PumpDescription: PUMPS EWS-440 – a 440 HP three-cylinder mud pump engineered for maximum reliability and minimum total cost of ownership. Discover the detailed specifications of its forged steel power
Parameter
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Power rating |
440 HP (328 kW) |
|
Maximum pump speed |
320 SPM |
|
Stroke length |
6 inches (152.4 mm) |
|
Stroke size range |
3 "to 6" |
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Lubrication end working pressure |
3,000 PSI (LP) / 5,000 PSI |
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Gear ratio |
4.578:1 |
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Valve box specifications |
API #4 |
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Inhalation port |
6 inches (150# flange) |
|
Emission vent |
3 inches (900# flange) |
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Size (length x width x height) |
98" x 48" x 44" (2479 x 1219 x 1103 mm) |
|
Pump weight |
9,840 lbs (4463 kg) |
- They have simple structure and this enables handlers to easily maintain the pumps and replace the parts if needed
- These are modern pumps that are sophistically designed for smooth operation, low noise, and reduced vibration
- Such pumps are able to deliver high concentration, and high viscosity suspended slurry
- These high-performance pumps can deliver stable fluid flow with no over-current, and pulsation. The fluid is also stirred and has a shear slurry phenomenon
- The discharge pressure generated by these pumps is also irrelevant to the flow speed. The handler can adjust the displacement by a shifting mechanism or motor
- The pumps usually have self-absorption capacity. They can suck liquid directly without the need of bottom valve
Oil & Gas Drilling
Pumps high-pressure drilling mud downhole to cool the bit and remove cuttings.
Horizontal Directional Drilling (HDD)
Keeps boreholes lubricated and removes debris efficiently.
Construction & Mining
Moves slurry, cement, and muck in tunneling and dewatering applications.
Drywall Finishing
Drywall mud pumps are used to apply joint compound quickly and cleanly.
Agriculture & Municipal Work
Handles sludge or slurry transfer in environmental and wastewater systems.
Installation Precautions for L.J.R. Mud Pumps
Solid foundation:
Make sure that the installation foundation is flat and solid and can withstand the weight of the pump and vibration during operation.
Correct installation direction:
Determine the correct installation direction according to the design requirements of the pump.
Pipe connection:
The pipe connection should be well sealed to avoid leakage.
Power wiring:
For electric pumps, wire correctly to ensure electrical safety.
Lubrication:
According to the requirements of the pump, carry out proper lubrication.
Seal check:
Check the pump seals to ensure there is no leakage.
Coupling alignment:
If there is a coupling, make alignment adjustments.
Ground bolt tightening:
Bolts should be tightened in place to prevent loosening.
Shaft concentricity:
Ensure the concentricity of the pump shaft and drive shaft.
Protective devices:
Install necessary protective devices to prevent accidental injury.
Clean environment:
The installation site should be kept clean.
Pre-commissioning check:
Before starting the pump, check that the components are installed correctly.
Start-up sequence:
Operate the pump in the correct start-up sequence.
Operation monitoring:
Observe the parameters of the pump during operation, such as flow rate, head and vibration.
Noise check:
Note whether the noise is normal when the pump is running.
Leakage check:
Regularly check whether the seal of the pump is good and there is no leakage.
Troubleshooting:
If there is any abnormality, carry out troubleshooting in time.
Running time:
Avoid the pump running continuously for a long time, and rest appropriately.
Maintenance plan:
Make a reasonable maintenance plan to maintain the pump regularly.
Operator training:
Make sure the operator is familiar with the installation, commissioning and operation procedures of the pump.
Ordering Process
Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service.
Packaging and Shipping
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Packaging |
Standard export plywood case or carton. |
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Shipping |
DHL, TNT, UPS, FEDEX, and EMS, SF. Air and sea transportation are also supported. |
Our Factory
Shijiazhuang Dong Li Petroleum Machinery Co., Ltd. (DLSY) was founded in 2008 and is headquartered in Shijiazhuang, Hebei Province, China.
Our Certificates
FAQ
Shijiazhuang Dongli Petroleum Machinery Co., Ltd. is one of the most professional l.j.r. mud pumps manufacturers and suppliers in China, featured by quality products and low price. Please rest assured to buy CE approved l.j.r. mud pumps made in China here from our factory. Contact us for quotation.
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