
MDP™ Performance Non-Return Valve
- Lowest pressure drop in industry
- 6-7 year extended service life
- All polymers 14-260mm sizes


Patent Protected Technology
Made in USA
Browse our precision-engineered injection molding valve assemblies from leading manufacturers. Featuring patented non-return valves and automatic shut-off systems designed for superior shutoff performance, extended service life, and universal polymer compatibility. These advanced valve assemblies deliver consistent shot-to-shot quality, reduce scrap rates, and optimize injection molding processes across all industries from automotive to medical device manufacturing.


What size range of valve assemblies are available for injection molding machines?
Our valve assemblies range from 14mm to 260mm diameter, covering all standard injection molding machine configurations from small to large-scale production equipment.
How long do these valve assemblies typically last in production environments?
Are these valves compatible with all types of polymers and resins?
What makes these valve assemblies better than standard non-return valves?
Do I need to modify my injection molding machine to install these valves?
What technical support is available for valve selection and installation?
Can these valves help reduce scrap rates and improve part quality?
Talk to our experts for custom solutions and tailored guidance.

Precision valve assemblies ensure consistent quality for automotive plastic components with minimal weight variance and reduced cycle times.

Sterile, high-precision valve systems deliver the shot-to-shot consistency required for medical-grade plastic component production.

Advanced shutoff technology ensures precise dimensional control for complex plastic housings and electronic component enclosures.

Robust valve assemblies optimize extrusion and injection molding operations for high-volume industrial plastic production environments.
Talk to our experts for custom solutions and tailored guidance.



Eight patented technologies including industry-leading non-return valves and automatic shutoff systems backed by decades of plasticating expertise and engineering excellence.
Valve assemblies engineered with tungsten carbide and heat-treated H13 tool steel deliver 6-7 years extended service life, reducing downtime and replacement costs significantly.
Direct consultation with founder Mike Durina and dedicated technical support team ensures optimal valve selection, custom design solutions, and comprehensive installation guidance.
Connect with our technical experts for custom design consultation, product recommendations, and application-specific pricing. Expect detailed technical guidance within 24 hours.
For immediate assistance, feel free to give us a direct call at 3304825100 You can also send us a quick email at info@mdplastics.com
For immediate assistance, feel free to give us a direct call at 3304825100 You can also send us a quick email at info@mdplastics.com