The GRACO 253390 is a stationary supply grease pump designed for medium pressure, low volume grease applications. It is constructed from durable materials including thick cast aluminum, steel, urethane, aluminum, Buna-N, brass, ethylene, and Delrin. This pump is intended for reliable, continuous grease dispensing in industrial environments, reducing downtime and maintenance needs.

Key Features:

• Piston Pump Package
• Mini Fire-Ball 225, 50:1 ratio, 400 lb (181 kg) container
• Thick cast aluminum air motor housing, steel, urethane, aluminum, Buna-N, brass, ethylene, Delrin
• Maximum working pressure: 5000 psi (35 MPa)
• Compatible with grease
• Engineered with fewer moving parts for less wear and reduced downtime
• In-line pump design maximizes seal life
• Displacement rods have minimal wear due to proprietary GRACO manufacturing process
• Non-metallic poppet valves for superior sealing, even in dirty air environments
• Large air porting design for efficient compressed air use and reduced icing
• Corrosion-resistant design with liquid salt nitriding, nickel plating, stainless steel, aluminum, and chrome on key components

Applications:
Ideal for medium pressure, low volume grease dispensing in industrial and vehicle service environments. Suitable for small shops and operations where equipment uptime is critical.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing equipment.
• Mount the pump securely on a drum or stationary base
• Ensure proper air supply and connections (air inlet: 0.375 in, female NPT)
• Use recommended hoses and fittings for fluid outlet (1/4 in, female NPT)
• Follow manufacturer guidelines for maintenance and seal replacement
• Regularly inspect for wear and ensure clean, dry air supply to prevent icing and contamination