MDP™ Performance Non-Return Valve

The MDP™ sliding ring non-return valve offers the most consistent shut-off, longest life, and lowest pressure drop in the industry. It can be used with all resins and constructed out of several types of material. It's advanced hydraulic flow design, and solid WC front seat virtually eliminates adhesive wear. It's easy to install and facilitates quick material and color changes. Give us a call today and let us design and manufacture a non-return valve that's perfectly suited for your specific application.

The patented (US #7,527,493) MDP™ Performance sliding ring non-return valve, offers the most consistent shut off in the industry!


  • Simple two or three-piece sliding ring design
  • High flow; lowest pressure drop in the industry
  • Good for all resin groups
  • Extremely accurate with or without decompression
  • Multiple construction options
  • Advanced hydraulic flow
  • Adhesive wear is virtually eliminated as a result of advanced hydraulic flow and a solid WC front seat


  • Easy installation and removal
  • Competitive pricing
  • High throughput
  • Quick and precise shutoff, lowest part weight distribution in the industry
  • Multi-purpose applications
  • Proven material savings
  • Long wear life
  • Quick material and color changes

MDP™ Performance Non-Return Valve