Quality Craft Mix Heads

Quality Craft Machine (QCM) is the value brand of Linden Polyurethane. Intended specifically for distributors and OEMs, QCM provides a variety of new and used mix heads for sale as well as switching valves and precision machining services.

QCM Mix Heads

QCM manufactures both standard and custom-engineered mix heads for polyurethane processing. We offer high-pressure mix heads, low-pressure components for mix heads, and all of the components required to support them. This includes orifices, needles, nozzles, and seal kits.


  • High-pressure and low-pressure mix heads available
  • Standard stroke and long stroke L-type mix heads available
  • Standard stroke and long stroke straight mix heads available
  • Warranties for both types ranging from 20,000 to 100,000 shots

QCM Switching Valves

Quality Craft Machine is pleased to offer switching valves to switch between different mix heads or high to low pressure. These are the ideal replacement for high maintenance, air-operated ball valves due to the reliability of the metal-to-metal seal. QCM seat valves can be used with both filled and unfilled systems to substantially reduce downtime. Custom sizes can be manufactured to your specifications.

QCM Precision Machining Services

QCM engineers are set up to assist you with your next custom machining project. Specializing in high-tolerance machining, we can accommodate both large and small volumes at competitive prices.


  • 4-axis vertical machining center with CNC turning
  • Engine lathes up to 20” swing and 100” centers
  • Full service manual milling, grinding, and honing services available
  • Automatic checking up to 2” in diameter

Ready to Get Started?

Contact us to learn more about Quality Craft Machine products and services.

L-Head (2-Stream) Models

L-Head (3-Stream) Models
MHL 3/5-2-38-180 MHL 6/10-3-38-180
MHL 5/8-2-38-180 MHL 8/12-3-38-180
MHL 6/10-2-38-120 MHL 10/12-3-38-180
MHL 8-12-2-38-120 MHL 10/14-3-38-180
MHL 10/12-2-38-120 MHL 12/19-3-38-180
MHL 10/14-2-38-120 MHL 16/25-3-38-180
MHL 12/19-2-38-120 Duplex (Double L-Head) Models
MHL 14/20-2-38-120 MHDL 6/6/10-4-38-120
MHL 16/25-2-38-120 MHDL 8/8/12-4-38-120
  MHDL 10/10/12-4-38-120
Straight Head (Standard) Models - 3-Stream Also Avail.

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