MDP™ Performance Non-Return Valve
Posi-Shut™ Automatic Shut-Off Valve
Patent Protected Technology certified

Patent Protected Technology

Made in USA certified

Made in USA

Injection Molding Valve Assemblies from Top Manufacturers

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.

Our Range of Products

MDP™ Performance Non-Return Valve

MDP™ Performance Non-Return Valve

  • Lowest pressure drop in industry
  • 6-7 year extended service life
  • All polymers 14-260mm sizes
Posi-Shut™ Automatic Shut-Off Valve

Posi-Shut™ Automatic Shut-Off Valve

  • Patented Mini-Shut cartridge
  • Independent screw operation
  • H13 tool steel construction

Frequently Asked Questions

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?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Automotive Manufacturing

Automotive Manufacturing

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

Medical Device Manufacturing

Medical Device Manufacturing

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

Consumer Electronics

Consumer Electronics

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

Industrial Plastics Processing

Industrial Plastics Processing

Robust valve assemblies optimize extrusion and injection molding operations for high-volume industrial plastic production environments.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Posi-Shut™ Automatic Shut-Off Valve

Injection Valve Series: CPVC and Stainless Steel Options

Injection valve series featuring CPVC and stainless steel construction for precision control in injection molding operations. These valves provide automatic shut-off capabilities with patented Mini-Shut™ replaceable cartridge technology, ensuring consistent shot-to-shot performance and superior process control for thermoplastics and specialized resin applications.
Learn More
MDP™ Performance Non-Return Valve

2 Inch Non-Return Valve - Top Quality Valve

Premium 2-inch non-return valves engineered for injection molding applications. Our patented valve technology delivers exceptional shutoff performance, extended service life, and universal polymer compatibility. Available in sizes from 14mm to 260mm, these precision-engineered valves reduce energy consumption and ensure consistent shot-to-shot quality for automotive, medical, and industrial plastics manufacturing.
Learn More
Inject-EX™ Plasticating System

Injection Molding Screw Tip: Complete Technical Assembly Guide

Injection molding screw tips and plasticating systems engineered for superior melt quality and precise shot control. Our revolutionary stationary screw designs eliminate traditional reciprocating screw deficiencies while providing ultra-precise injection control with patented shut-off mechanisms and real-time melt monitoring technology.
Learn More

Why Injection Molders Choose Md Plastics Inc

Patented Innovation Leadership

Eight patented technologies including industry-leading non-return valves and automatic shutoff systems backed by decades of plasticating expertise and engineering excellence.

Extended Equipment Longevity

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.

Expert Technical Partnership

Direct consultation with founder Mike Durina and dedicated technical support team ensures optimal valve selection, custom design solutions, and comprehensive installation guidance.

Request a Quote for Premium Valve Assemblies

Connect with our technical experts for custom design consultation, product recommendations, and application-specific pricing. Expect detailed technical guidance within 24 hours.

Contact Us Today

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