The GRACO WMC22G4 is a Therm-O-Flow supply unit designed for bulk warm melt material handling and temperature conditioning applications. It is engineered to deliver superior heat control and performance, suitable for lowering or maintaining material viscosities and heating true warm melt materials. The unit is constructed with robust materials to withstand industrial environments and is intended for use within GRACO’s bulk warm melt supply systems.

Key Features:

• Bulk warm melt supply unit
• WMC22G4, 36:1HCS, D200-200H, 480V, N
• Industrial-grade materials (specific wetted materials include electroless nickel plated ductile iron, EPDM, PTFE coated aluminum, 6061 aluminum, Buna, Viton, zinc plated steel, 316 stainless steel, 17-4 stainless steel)
• Maximum working pressure: 36:1 ratio – 3600 psi (28 MPa, 276 bar); 68:1 ratio – 6800 psi (34 MPa, 375 bar) (Note: WMC22G4 is 36:1HCS, so 3600 psi applies)
• Designed for use with GRACO bulk warm melt supply systems and compatible with various warm melt materials
• Superior heat control for temperature conditioning
• Modular approach for easy plug-in installation
• Intuitive, easy-to-use interface
• Up to 32 heat zones (with expansion kits)
• Compact footprint (approx. 3x3 ft/1x1m)
• Advanced air motor technology and powerful piston pump
• Patented platen design
• Reliable and easy to maintain

Applications:
Used in industrial settings for supplying and conditioning warm melt materials such as sealants and adhesives. Ideal for applications requiring precise temperature control and consistent material viscosity, including solar panel edge sealing and other manufacturing processes.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety of the supply system.
• Follow GRACO’s installation guidelines for bulk warm melt supply systems
• Ensure proper electrical and air supply connections (480V, 3/4” NPT air inlet)
• Place the unit near the application point for efficiency (compact footprint allows for close placement)
• Regularly inspect and maintain wetted parts and seals for longevity
• Consult the equipment manual for detailed installation and maintenance procedures