A10055-B – Weldon Pumps Auxiliary Fuel Pump
Available now on the Airparts.aero Marketplace.
Overview
The Weldon A10055-B is a high-pressure, high-flow electric auxiliary fuel pump engineered for use in demanding general aviation and experimental aircraft fuel systems. Manufactured by Weldon Pumps, a division of Parker Hannifin and a leader in aerospace fluid dynamics, this pump is designed to provide reliable fuel delivery for engine priming, takeoff, landing, and as a critical backup to the engine-driven pump. The A10055-B is renowned for its robust construction, consistent performance, and long service life, making it a trusted choice for high-performance piston and turbine engine applications where fuel pressure and flow are non-negotiable.
Key Features
- Sliding Vane Technology: Utilizes a positive displacement, sliding vane pumping mechanism. This design provides consistent pressure and flow across a wide range of operating conditions and is less susceptible to cavitation and vapor lock than other pump types.
- High-Performance Motor: Equipped with a durable, long-life electric motor designed for continuous duty operation, ensuring it can function as a primary fuel pump for extended periods if required.
- Integral Bypass Valve: Features a built-in, factory-set pressure relief bypass valve. This protects the fuel system from over-pressure conditions and allows fuel to be drawn through the pump with minimal restriction when it is not operating.
- Filtered Inlet: Includes an integral 40-micron fuel filter screen on the inlet to protect the precision pumping mechanism from harmful contaminants, ensuring long-term reliability.
- Durable & Serviceable: Constructed with an anodized aluminum housing for corrosion resistance and light weight. Weldon pumps are fully serviceable and can be overhauled, providing a long-term, economical solution.
Technical Specifications
- Part Number: A10055-B
- Pump Type: Electric Motor-Driven, Positive Displacement Vane Pump
- Application: Auxiliary/Boost Fuel Pump
- Operating Voltage: 14 VDC or 28 VDC (model dependent)
- Maximum Pressure: Factory set up to 30 PSI
- Typical Flow Rate: Approximately 30-40 GPH (Gallons Per Hour) at operating pressure
- Inlet/Outlet Port Size: 3/8" NPT Female Thread
- Dry Weight: Approximately 3.0 lbs (1.36 kg)
- Current Draw: Varies by voltage and load (typically 3-6 amps)
- Certification: FAA-PMA Approved
Aircraft Compatibility
The Weldon A10055-B is specified as original equipment or a popular STC'd aftermarket upgrade on numerous high-performance single and twin-engine aircraft. Its universal design makes it adaptable to a wide range of experimental aircraft as well. Always consult the aircraft's specific Illustrated Parts Catalog (IPC), maintenance manual, or STC for definitive compatibility.
- Beechcraft: Bonanza, Baron (various models)
- Cessna: 310, 320, 340, 414, 421
- Piper: PA-31 Navajo, PA-32 Saratoga (select models), PA-46 Malibu/Mirage
- Mooney: M20 Series (various high-performance models)
- Experimental Aircraft: A popular choice for high-horsepower Lycoming and Continental engine installations in aircraft like the Van's RV-10 and various composite designs.
Applications
The A10055-B serves several critical functions within an aircraft fuel system:
- Engine Priming: Provides initial fuel pressure for starting fuel-injected engines.
- Takeoff & Landing: Used during critical phases of flight as a backup to ensure positive fuel pressure to the engine.
- Vapor Suppression: Helps to prevent vapor lock at high altitudes or high ambient temperatures by maintaining positive pressure in the fuel lines.
- Emergency Backup: Serves as the primary means of fuel delivery in the event of an engine-driven fuel pump failure.
Why Choose A10055-B?
Choosing the Weldon A10055-B fuel pump is an investment in safety and reliability. Its positive displacement design ensures that your engine receives consistent, non-pulsating fuel flow, which is critical for smooth engine operation. Unlike sealed, throw-away units, the A10055-B is a fully serviceable, professional-grade piece of equipment designed for the long haul. Backed by Weldon's decades of experience and FAA-PMA certification, this pump provides the peace of mind that comes from installing a component built to exceed the rigorous demands of aviation.
Order Your A10055-B Weldon Pump Now
Ensure the integrity of your aircraft's fuel system with the proven performance of the Weldon A10055-B auxiliary pump. Visit Airparts.aero today to order this mission-critical component.
The Weldon A10055-B is an integral component of a multi-engine or high-performance single-engine aircraft's fuel delivery architecture, designed to meet the requirements of FAR 23.955 for fuel flow. The pump's internal geometry, consisting of a slotted rotor with sliding vanes, creates positive displacement chambers that trap and move fluid from the inlet to the outlet. This method is highly efficient and provides a stable output pressure that is not dependent on engine RPM, unlike the primary engine-driven pump. The integral pressure relief valve is a critical safety feature that recirculates flow internally when downstream pressure exceeds the valve's set point, preventing system damage and ensuring predictable performance. At Airparts.aero, we provide these essential, certified components to maintain the safety and airworthiness of your aircraft.
Note: Installation of fuel system components must be performed by a certified A&P mechanic in accordance with the aircraft manufacturer's maintenance manual and all applicable FARs. Verify correct voltage and pressure settings for your specific aircraft application before installation.
