RUHRPUMPEN TYPE RDPT 100/80-S11 B28(A) Positive-displacement Triplex Pump 2YL

RUHRPUMPEN High-pressure Reciprocating Positive-displacement TriplexPlunger Pump TYPE RDPT 100/80-S11 B28(A) 77.5 USGPM 207 RPM TYPE FLUID MDO, H20, GAS, OIL, PITCH PLUNGER DIAMETER 3.15" STROKE 3.937" 517 PSIG @ 400 DEGREES NPSH REQUIRED 11.3' HYDRO PRESSURE 1079 PSIG @ 68 DEGREES 20 HP 460 V 3 PH 1760 RPM

• Flow Rate: 77.5 USGPM (Gallons Per Minute) at a crankshaft speed of 207 RPM.
• Maximum Pressure: 517 PSIG maximum allowable working pressure at an operating fluid temperature of 400°F.
• Hydrostatic Test Pressure: 1,079 PSIG, checked at a baseline room temperature of 68°F.
• Suction Requirement (NPSHr): 11.3 feet of Net Positive Suction Head is required at the inlet to prevent cavitation.

System Dimensions & Materials

• Plunger Diameter: 3.15 inches (80 mm).
• Stroke Length: 3.937 inches (100 mm).
• Design Nomenclature: The 100/80 designation in the type code explicitly reflects these exact dimensions (100 mm stroke length / 80 mm plunger diameter).
• Fluid Compatibility: The pump configuration (S11 B28(A)) denotes specific API material classes designed to handle aggressive, hot, or highly viscous process fluids. These include Marine Diesel Oil (MDO), Water (H₂O), Gas, Crude Oil, and Pitch/Tar.

Electrical & Drive Requirements

• Motor Power: 20 Horsepower (HP).
• Electrical Supply: 460-Volt, 3-Phase, 60 Hz electrical service.
• Motor Speed: 1,760 RPM base speed. Because the pump operates at 207 RPM, the system relies on an external gear reducer or belt-drive arrangement with an approximate 8.5:1 reduction ratio to step down the motor speed.