Malabar PF53361-1PWS – 2 Gallon Hand-Pump Fluid Dispenser for Petroleum-Based Aircraft Fluids

Malabar PF53361-1PWS – 2 Gallon Hand-Pump Fluid Dispenser for Petroleum-Based Aircraft Fluids

The Malabar Model PF53361-1PWS is a compact, robust 2 gallon (7.6 L) hand-pump fluid dispenser, specifically designed for servicing aircraft systems with petroleum-based fluids such as engine oils, hydraulic oils, or general aircraft lubrication oils. The unit features a rugged green polyethylene reservoir, integrated fluid meter, water-stop filter assembly, and an 84-inch (2134 mm) service hose. It is shipped fully assembled and ready for immediate use after filling with approved fluid and bleeding air from the system.

Ideal for use in maintenance environments where precision, contamination control, and portability are required, this dispenser offers steady hand-pump operation, inline metering, and safety features such as a factory-set relief valve to protect system integrity.

Key Specifications

• Fluid Type: Petroleum-based fluids (aircraft engine oil, hydraulic oil, lubrication oil)

• Reservoir Capacity: 2 U.S. gallons (7.6 liters)

• Pump Outlet Pressure: 100 psig (≈ 689 kPa)

• Volume per Stroke: 2.5 cubic inches (≈ 41 cc)

• Relief Valve Setting (Bypass): 125 ± 10 psig (≈ 862 ± 69 kPa)

• Hose Length: 84 inches (2134 mm)

• Net Weight (Empty): 12 lbs (5.4 kg)

• Filter Rating: 1 micron nominal – water-stop filter assembly

• Reservoir / Tank Color: Green (designated for petroleum-based fluid service)

• Configuration: Hand-pump operated with integrated fluid meter (quarts/pints or liters) and quick-connect service hose coupling

Features & Benefits

• Portability & Convenience: Lightweight (12 lbs empty) and compact for easy movement around hangars or service bays.

• Precise Fluid Delivery: Integrated fluid meter allows accurate measurement of dispensed fluid, reducing waste and ensuring accurate maintenance records.

• Contamination Control: The 1-micron water-stop filter protects aircraft systems from water or particle contamination during fluid transfer.

• Safe Operation: Factory-set relief valve protects the system by bypassing fluid back to the reservoir if pressure exceeds the set limit (~125 psig).

• Versatility: Compatible with a wide range of petroleum-based fluids used in aircraft maintenance (engine oils, hydraulic oils, lubrication oils).

• Ready-to-Use: Ships fully assembled — simply fill with approved fluid, prime (pump several strokes to bleed air), and connect the hose coupling for service.

Usage & Maintenance Notes

• Always verify that the fluid being dispensed is approved for the specific aircraft system and meets manufacturer specifications.

• Before initial use, fill the reservoir and operate several full pump strokes to purge air from the system.

• Replace the filter element periodically — typically every 3–4 months under normal operating conditions or when flow performance decreases.

• Do not tamper with the factory-set relief valve — adjustments may void warranty or compromise safety.

• After each use, disconnect the coupling, replace the dust-plug, drain any residual fluid from the hose, and store the unit in a clean, dry environment.

Ideal Applications

• Aircraft maintenance facilities performing engine oil or hydraulic fluid servicing.

• Hangar environments where portability, precision, and contamination control are essential.

• Operations requiring manual dispensing rather than electrically driven systems.