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Cat Pump 277 Plunger Pump - Nickel Plated Aluminum Bronze - 3.5 GPM - 1500 PSI
Cat Pump 277 plunger pump has been used for decades on marine reverse osmosis systems. Up to 3.6 GPM, up to 1500 PSI, max RPM 1725, pedestal mount. 1/2" x 3/8" port size NPT. Nickel aluminum bronze. More information and specs below. *Free US Shipping on Cat Pump 277
Reference: 277
$1,599.99
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Cat Pump 277 Plunger Pump - Nickel Plated Aluminum Bronze - 3.5 GPM - 1500 PSI
Triplex design delivers high efficiency and a smooth, low-pulsation flow. Nickel Aluminum Bronze for added compatibility in intermittent duty sea water. Installation flexibility with compact direct-drive or belt-drive. Standard NBR seals with alternative options for temperature and chemical compatibility
Cat Pump 277, 271 Pump Specifications
Alternative Cat Pump 277, 271 Specifications
*Pump minimum is 100 RPM.
Triplex design delivers high efficiency and a smooth, low-pulsation flow. Nickel Aluminum Bronze for added compatibility in intermittent duty sea water. Installation flexibility with compact direct-drive or belt-drive. Standard NBR seals with alternative options for temperature and chemical compatibility
- FPM – .0110
- EPDM – .0220
- IPFE– .0770
- High Temp, 190°F – .3000
- High Temp, 200°F – .3400 (Intermittent Run-Dry)
Cat Pump 277, 271 Pump Specifications
| U.S. Measure | Metric Measure | |
| Flow | 3.5 gpm | 13.2 lpm |
| Pressure Range | 100 to 1500 psi | 6.9 to 103 bar |
| Pump RPM* | 1420 rpm | 1420 rpm |
| Stroke | 0.500" | 12.7 mm |
| Bore | 0.709" | 18 mm |
| Inlet Pressure Range | Flooded to 60 psi | Flooded to 4.1 bar |
| Maximum Liquid Temperature | 160° F | 71° C |
| Crankcase Capacity | 15 oz. | .45 L |
| Inlet Ports (2) | 1/2" NPT(F) | 1/2" NPT(F) |
| Discharge Ports (2) | 3/8" NPT(F) | 3/8" NPT(F) |
| Shaft Diameter | 0.650" | 16.5 mm |
| Pulley Mounting | Either Side | Either Side |
| Weight | 13.4 lbs. | 6.1 kg |
| Dimensions | 10.28 x 8.78 x 5.35" | 261 x 223 x 136 mm |
Alternative Cat Pump 277, 271 Specifications
| Flow | 4.2 gpm | 15.9 lpm |
| Pressure Range | 100 to 1000 psi | 6.9 to 69 bar |
| Pump RPM* | 1725 rpm | 1725 rpm |
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