Fluid handling, regulation and control

Fluid handling, regulation and control

Fluid handling, regulation and control

Therm-O-Flow Guns – Dispense applicators for hot melt materials


Therm-O-Flow guns

The Therm-O-Flow guns are manual and automatic dispense applicators for applying hot melt materials.

Perfect for high pressure, high flow sealant and adhesive applications, Therm-O-Flow Guns are available with electric switches so they can be used in conjunction with automated equipment.


Therm-O-Flow guns – Product features

  • Precise temperature control from PID control panel
  • Piston-actuated ball and seat design for positive shut off
  • Light trigger pull
  • Rugged all metal construction

The most advanced technology on the market

With throughput capability 200% better than the leading competitor, Therm-O-Flow® bulk hot melt systems from Graco outperform the competition time after time and provide the best performing industrial bulk melt systems on the market. Therm-O-Flow’s advanced temperature control capability virtually eliminates overheated material, resulting in better adhesive quality and reduced rework due to degraded material. Graco offers a complete line of Therm-O-Flow bulk hot melt systems and “point of use” melt systems – each can be configured to fit your specific application.


  • Improve process efficiency
    • Keep your production runnnig with automatic electric crossover when using tandem units
  • Improve production capabililty
    • Highest throughout capability in the industry when tested and compared to leading competitor using PSA and butyl hot melt adhesives
    • Capable of melt rates up to 11 lb/min (5 kg/min)
  • Reduce energy costs
    • Inactivity shutoff and temperature setback reduces energy costs
  • Supply factory environment initiatives
    • Graco NXT Air Motors operate around 87 decibels while other comparable motors operate up to 103 decibels


  • Maximum operating temperature: 400°F
  • Maximum fluid working pressure: 5000 psi
  • Outlet port size: 5/8-18 UNF-2B
  • Inlet port size on gun housing: 7/8-14 UNF- 2B
  • Inlet port size on fluid swivel: 7/8-14 JIC(m)
  • Voltage: 230/240 Vac
  • Wattage: 120 W
  • Resistance temperature detector(platinum RTD; 0.00385 ohm/ohm/°C): 108.2 ohms @ 70°F
  • Heater resistance
    • individually: 890 ohms, +/- 70 ohms
    • wired in parallel: 445 ohms, +/- 35ohms
  • Weight: without swivel: 2.7 lb; with swivel: 3.4 lb / 1.5 kg
  • Dimensions
    • Height: 191 mm
    • Width: 76 mm
    • Length:
    • Models 249514 and 249515: 229 mm
    • Models 249512 and 249513: 267 mm
    • Models 297273 and 297274: 292 mm
  • Wetted parts: Aluminum, fluorocarbon rubber, stainless steel, PTFE, carbon steel, brass


  • Structural Adhesives
  • Polymers


  • Adhesive Bonding
  • Fenestration
  • Wood Finishing – Bonding and Laminating


  • Automotive Trim and General Assembly
  • Furniture Finishing / Manufacturing
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