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440HP Oil Rig Mud Pump 320 SPM Single Acting Oilwell Triplex Pumps

Categories	Drilling Mud Pump
Brand Name:	Hebei Pantu
Model Number:	W-440
Certification:	API 7K & ISO
Place of Origin:	China
MOQ:	1
Price:	10000USD~50000USD
Payment Terms:	L/C,T/T
Supply Ability:	20sets/month
Delivery Time:	45 days
Packaging Details:	3302mm1671mm1412mm(13ft6.85ft5.56ft)
Name:	Single Acting Oil Rig Mud Pump
Rated input Power::	328 kW (440 HP)
stroke Per Minutes:	320 SPM
Stroke Length::	6 inch
Gear Ratio::	4.578:1
Valve:	API #4
Suction Inlet Flange:	6" 150 lb flange
Approx Weight:	9839 lb

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Company Info.

Hebei E-valves Petroleum Equipment Co., Ltd.

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Product Details
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440HP Oil Rig Mud Pump 320 SPM Single Acting Oilwell Triplex Pumps

W-440 Triplex Single Acting Oil Rig Mud Pump

Product Overview

The 440HP Triplex Mud Pump is a high-performance single-acting piston pump designed for oil and gas drilling operations. With a maximum speed of 320 SPM, it delivers reliable and efficient fluid circulation to support drilling stability and wellbore cleaning. Built with a robust triplex design, it ensures smooth operation, reduced pulsation, and extended service life.

440 HP rated power for medium to deep drilling applications.
Triplex single-acting design for high efficiency and durability.
320 strokes per minute (SPM) for stable and consistent mud circulation.
Compatible with Oilwell-style parts and expendables for easy maintenance.
Engineered for harsh drilling conditions, ensuring reliable performance.

Key Features

Durable Construction – Fabricated with high-strength alloy steel for longer service life under harsh drilling conditions.
High Pumping Efficiency – Optimized fluid end design ensures steady displacement and minimal pulsation.
Flexible Power Options – Compatible with both electric motor and diesel engine drives.
Easy Maintenance – Modular design allows quick replacement of fluid end parts, reducing downtime.
Enhanced Lubrication System – Combination of splash and forced lubrication for extended bearing life.
API & ISO Compliance – Designed and manufactured according to API Spec 7K and ISO 9001 standards.

Technical Specifications

Rated input Power: 328 kW(440 HP)Max. Stroke Per Minute: 320 SPMContinuous operating stroke: 220 SPMStroke Length: 152.4 mm (6")
Gear Ratio4.578:1
Max. Working Pressure: 34.5 MPa (5000 psi)Valve: API#4
Piston Rod End : API #SA2
Max.Liner Size : 114.3 mm (4 1/2")
Suction Inlet Flange: 152.4 mm (6") 150 lb flange
Discharge Outlet Flange: 52.4 mm (2 1/16") flange,34.5 MPa (5000 psi)Overall Dimension (LxW×H):2478×1219×1103 mm3(8.13×4×3.62 ft3)Approx Weight: 4463 kg (9839 lb)

Parameters of W-440 Oil Rig Mud Pump

Liner Size

in

4 1/2

4 1/4

4

3 3/4

3 1/2

3

Discharge Pressure

MPa

11.8

13.2

14.9

17.0

19.5

26.6

psi

1711

1914

2160

2465

2828

3857

Stroke per Minute SPM

Power kW(HP)

Displacement L/s(GPM)

320

328

(440)

25.0

(396.3)

22.3

(353.5)

19.8

(313.8)

17.4

(275.8)

15.1

(239.3)

11.1

(175.9)

270

277

(371)

21.1

(334.4)

18.8

(298.0)

16.7

(264.7)

14.7

(233.0)

12.8

(202.9)

9.4

(149.0)

220

226

(303)

17.2

(272.6)

15.3

(242.5)

13.6

(215.6)

11.9

(188.6)

10.4

(164.8)

7.6

(120.5)

170

174

(234)

13.3

(210.8)

11.9

(188.6)

10.5

(166.4)

9.2

(145.8)

8.0

(126.8)

5.9

(93.5)

120

123

(165)

9.4

(149.0)

8.4

(133.1)

7.4

(117.3)

6.5

(103.0)

5.7

(90.3)

4.2

(66.6)

70

72

(96)

5.5

(87.2)

4.9

(77.7)

4.3

(68.2)

3.8

(60.2)

3.3

(52.3)

2.4

(38.0)

1

1.03

(1.38)

0.078

(1.236)

0.070

(1.110)

0.062

(0.983)

0.054

(0.856)

0.047

(0.745)

0.035

(0.555)

● Performance data are calculated by 90% mechanical efficiency and 100% volumetric efficiency.

Liner Size	in	4 1/2	4 1/4	4	3 3/4	3 1/2	3
Displacement	gal/rev	1.239	1.102	0.98	0.857	0.749	0.548
Displacement	L/s	17.2	15.3	13.6	11.9	10.4	7.6
Discharge Pressure	psi	2494	2798.5	3146.5	3596	4118	5000
Discharge Pressure	MPa	17.2	19.3	21.7	24.8	28.4	34.5
● Performance data are calculated		by 220 pm.

Applications

Onshore and offshore oil drilling rigs
Geothermal drilling projects
Coalbed methane drilling
Large-diameter water well drilling

Why Choose Our Mud Pump?

Proven track record in Middle East, North America, Russia, and Africa oilfields.
Global spare parts supply and after-sales service network.

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Product Tags:

440HP Oil Rig Mud Pump

440HP Oilwell Triplex Pumps

Single Acting Oilwell Triplex Pumps

440HP Oil Rig Mud Pump 320 SPM Single Acting Oilwell Triplex Pumps

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