Model EQ-750

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Ellis-Williams EQ-Series EQ-750 mud pump offers smooth, quiet operation; a small footprint; and high maximum flow rates.

Features

  • Innovative five-cylinder design
  • Fabricated, double-wall, steel power-frame construction
  • Full premium roller-bearing construction
  • Pressurized lubrication system with externally mounted lube pump
  • Forged-steel, inherently balanced crankshaft
  • 24-month limited warranty

Description

The Ellis-Williams EQ-750 pump is a premium pump suitable for land and offshore drilling applications in the 750-hp, continuous-duty-rated segment. This five-cylinder pump offers the smoothest, quietest operation of any mud pump in the industry. The EQ-750 pump has a smaller footprint and higher maximum flow rates than traditional triplex designs in the same horsepower class.

Specifications

EQ-750
Pump speed (spm)
220
200
180
160
140
120
Input power (hp, kW)*
779
581
708
528
637
475
567
423
496
370
425
317
Piston size (in.)
Rated pressure (psi, MPa)
Displacement
(gal/rev, L/rev)
Output
(gal/min, bbl/min)
6.0
1,275
8.8
4.284
16.217
942
22.4
857
20.4
771
18.4
685
16.3
600
14.3
514
12.2
5.5
1,500
10.3
3.600
13.627
792
18.9
720
17.1
648
15.4
576
13.7
504
12.0
432
10.3
5.0
1,825
12.6
2.975
11.262
654
15.6
595
14.2
535
12.7
476
11.3
416
9.9
357
8.5
4.5
2,250
15.5
2.410
9.123
530
12.6
482
11.5
434
10.3
386
9.2
337
8.0
289
6.9
3.5
3,725
25.7
1.458
5.519
321
7.6
292
6.9
262
6.2
233
5.6
204
4.9
175
4.2
3.0
5,000
34.5
1.071
4.054
236
5.6
214
5.1
193
4.6
171
4.1
150
3.6
129
3.1

* Input power required assumes 90% mechanical efficiency.

Rated power (hp, kW)
750
559.5
Maximum pump speed (spm)
220
Stroke length (in., mm)
7
177.8
Maximum piston size (in., mm)
6
152.4
Maximum rated pressure (psi, MPa)
5,000
34.5
Fluid-end style
E447
Valve size
API-5
Suction connections
10 in.,
flanged (2)
Discharge connections
5 1/16-in.
API-5000 (2)
Internal gear ratio
N/A
Crankcase oil capacity (gal, L)
60
227.1
Input shaft diameter (in., mm)
8.5
215.9
Dry weight (lb, kg)
22,000
9,988.0