The GRACO 189291 is a replacement seat and ball assembly designed for use in GRACO equipment, specifically for the Husky 2150 series of air-operated diaphragm pumps. The seat is made from polypropylene (2150 Poly), and the ball is typically made from PTFE (polytetrafluoroethylene), though the specific ball material is not always specified in the part listing. This assembly is critical for sealing and controlling fluid flow within the pump.

Key Features:

• Seat and Ball Assembly
• 2150 Poly
• Polypropylene seat, PTFE ball (ball material inferred from typical Husky 2150 pump configurations)
• Husky 2150 series air-operated diaphragm pumps
• Designed for reliable sealing and fluid control
• Easy to replace as part of routine maintenance
• Constructed for durability in industrial environments

Applications:
Used in industrial fluid transfer applications, particularly where air-operated diaphragm pumps are required for handling abrasive or corrosive fluids. Commonly found in mining, agriculture, and manufacturing settings.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with GRACO equipment.
• Inspect the seat and ball for wear or damage before installation
• Follow the pump’s maintenance manual for disassembly and reassembly procedures
• Ensure all seals and o-rings are properly seated during installation
• Torque fasteners to manufacturer specifications (typically 50–60 in-lb for Husky 2150 components)
• Regularly inspect and replace worn seats and balls to maintain pump efficiency
• Clean all components thoroughly before reassembly
• Use only recommended lubricants and replacement parts