GASO 3900 Triplex Plunger Pump
IEQ is an OEM supplier of the GASO 3900 Pump. Let the friendly customer service staff at IEQ Industries help you find the GASO Pump you need.

Specifications
Pump Size:
Stroke length, 5"
Rated plunger load: pounds (kg)
7885 (3576)
Crankshaft Pin:
Diameter, in.: 4.5
Oil Capacity: gallons (L)
Crankcase: 9 (34)
Weight: pump only on wood shipping skids, pounds (kg)
4030 (1827)
Standard Materials for Fluid Ends:
3968
Steel Billet
3969
Steel Billet
Pump Model | Flange Connections | |
Discharge Connection Sizes | Suction Connection Sizes | |
3968 | 2" - 1500# ANSI | 4" - 150# ANSI |
3969 | 3" - 600# ANSI | 6" -150# ANSI |
Performance Data
PUMP | English Units | 100 RPM | 200 RPM | 300 RPM | 360 RPM | ||||||
Plunger Dia. In. | GPM per RPM | Max. Press. PSI | BPD | GPM | BPD | GPM | BPD | GPM | BPD | GPM | |
3968 | 2 | 0.204 | 2510 | 700 | 20.4 | 1400 | 40.8 | 2100 | 61.2 | 2515 | 73.4 |
2 1/4 | 0.2582 | 1985 | 885 | 25.8 | 1770 | 51.6 | 2655 | 77.5 | 3185 | 92.9 | |
2 1/2 | 0.3188 | 1605 | 1095 | 31.9 | 2185 | 63.8 | 3280 | 95.6 | 3935 | 114.8 | |
2 3/4 | 0.3857 | 1325 | 1325 | 38.6 | 2645 | 77.1 | 3965 | 115.7 | 4760 | 138.9 | |
3 | 0.459 | 1115 | 1575 | 45.9 | 3145 | 91.8 | 4720 | 137.7 | 5665 | 165.2 | |
3969 | 3 | 0.459 | 1115 | 1575 | 45.9 | 3145 | 91.8 | 4720 | 137.7 | 5665 | 165.2 |
3 1/4 | 0.5387 | 950 | 1850 | 53.9 | 3695 | 107.7 | 5540 | 161.6 | 6650 | 193.9 | |
3 1/2 | 0.6247 | 820 | 2145 | 62.5 | 4280 | 124.9 | 6425 | 187.4 | 7710 | 224.9 | |
3 3/4 | 0.7172 | 715 | 2460 | 717 | 4915 | 143.4 | 7380 | 215.2 | 8855 | 258.2 | |
4 | 0.816 | 630 | 2800 | 81.6 | 5595 | 163.2 | 8395 | 244.8 | 10075 | 293.8 | |
Brake Horsepower required | 32.9 | 65.8 | 98.7 | 119 |
For operation below 50 RPM, an auxiliary lubrication system is required.
Volumetric Rate is based on 100% Volumetric Efficiency. Brake Horsepower/Kilowatts Required is based on 80% Mechanical Efficiency.