Eaton Vickers® Engine-Driven Variable Inline Piston Pump, 37.5 gpm, 3 psi at 6 gpm, 3750 rpm

Eaton's Vickers® part number 849589 (model PV3-240-18) main engine-driven pump (EDP) was specifically designed to meet the requirements of the Boeing 737-600/700/800/900 aircraft. This state of the art engine-driven pump offers superior performance, higher horsepower to weight ratio, and lower operating costs. It delivers 37.5 gpm (142 Lpm) at 3750 revolutions per minute and a 2850 psi (19651 kilo pascal). The design of the pump is drawn from Eaton's Vickers® product line of highly reliable 2.4 cubic per inches displacement pumps and has significant reduction in weight and volume. Model PV3-240-18 incorporates the field proven, reliable model PV3-240-2 and 10 pump rotating components together with improved reliability and weight reduction technology developed from the B777 engine-driven pump program. Many piece parts from the current model PV3-240 production models are incorporated in the new unit, which reduces spare parts inventory requirements.

Features
• All castings are designed for improved fatigue characteristics through specific structural design based on finite element analysis and use of improved casting materials
• The drive shaft is hollow for weight reduction
• The cylinder block is machined from ductile iron to minimize wear in the drive spline and piston bores
• Bronze plating on the cylinder block surface provides a durable bearing surface for wear against the tool steel valve plate
• The yoke used in model PV3-240-18 is an exact mirror image of the field proven model PV3-240-10 series yoke
• A removable AISI 52100 bearing quality steel provides the bearing surface for the actuator piston
• The outlet blocking valve is hydraulically balanced for rapid response and ease of manufacture
• Stepped diameter seal glands simplify assembly/disassembly and minimize the risk of seal damage
• Swept blade boost impeller provides higher flow capability, allowing for a smaller size impeller
• The EDV is flange mounted using two (2) threaded fasteners
• Separable valve plate design allows for ease of assemble and optimized material selection
• The single-piece housing design simplifies maintenance tasks, reduces package weight, and minimizes envelope requirements
Specifications
• Series: PV3-240-18 Model
• Speed Rating: 3750 rpm
• Flow Rate: 37.5 gpm
• Pressure Rating: 3 psi at 6 gpm
• Dimensions: 10.76 in W

Aircraft Eligibility
• B737-600
• B737-700
• B737-800
• B737-900