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Rubber Lined Check Valve

Rubber Lined Check Valve
Size Range: DN50 – DN2000 (2”–80”)
Connection: Wafer or Flanged (ANSI/DIN/JIS)
Pressure Rating: PN10 / PN16 / Class 150
Temperature Range: -20 °C to +120 °C (depending on lining)
Body Material: Cast Iron / Ductile Iron / Cast Steel with Rubber Lining Seat & Lining: EPDM / NBR / Neoprene / PTFE
Disc & Pin: Stainless Steel 304/316 or Epoxy-Coated Ductile Iron
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Rubber Lined Check Valve

 

Side profile of Rubber Lined Check Valve illustrating disc, seat, and lined interiorProduct Overview

At Vcore Valve, we design and manufacture Rubber Lined Check Valves to deliver maximum performance and reliability in harsh operating environments. Our check valves are engineered to allow liquid or gas to flow freely in one direction while automatically preventing reverse flow. By adding a durable rubber lining to the valve body and seat, we protect critical components from corrosion and abrasion caused by aggressive media.

Our rubber lined check valve offers an ideal solution for industries such as chemical processing, water treatment, oil & gas, power plants, and food & beverage. With its robust construction, long service life, and minimal maintenance requirements, this valve ensures smooth operation, system safety, and lower total cost of ownership for our customers.

Unlike ordinary valves, our check valve combines high-quality materials, precision engineering, and advanced rubber lining technology to achieve exceptional sealing performance and zero leakage. This makes it an essential piece of equipment wherever backflow prevention is critical.

Key Benefits

  • Superior Corrosion Resistance: The rubber lining protects the valve body, seat, and internal surfaces from chemical attack, extending valve life.

  • Reliable Backflow Prevention: Automatically closes when flow reverses to protect pumps, pipelines, and downstream equipment.

  • Wide Size Range: Available from DN50 (2”) up to DN2000 (80”), covering everything from small process lines to large industrial pipelines.

  • Low Maintenance Design: Simple structure minimizes wear, reduces downtime, and lowers maintenance costs.

  • Flexible Connections: Offered with wafer and flanged connections compatible with ANSI, DIN, and JIS standards.

  • Customizable Materials: Multiple lining and seat options (EPDM, NBR, PTFE, neoprene) to match different fluids and temperatures.

  • Energy Efficiency: Optimized flow path reduces pressure loss and improves system efficiency.

 

Technical Specifications

Item Specification / Material
Valve Type Rubber Lined Check Valve
Size Range DN50 – DN2000 (2” – 80”)
Pressure Rating PN10 / PN16 / Class 150
Temperature Range -20°C to +120°C (depending on lining material)
Connection Type Wafer, Flanged (ANSI, DIN, JIS standards)
Body Material Cast iron, Ductile iron, Cast steel with rubber lining
Seat Material EPDM, NBR, FPM (fluoro-rubber), PTFE optional
Disc Material Stainless steel 304/316, Ductile iron with epoxy coating
Stem/Pin Material Stainless steel 420/431
Lining Material EPDM, NBR, Neoprene, PTFE
Sealing Class Bi-directional zero leakage
Operation Automatic (spring-loaded or swing type), optional actuation
Coating Fusion-bonded epoxy or customer-specified coating

 

Technical data sheet for Rubber Lined Check Valve showing size range, pressure rating, and materialsHow It Works

When the process fluid flows in the correct direction, our Rubber Lined Check Valve opens automatically, allowing free passage. If the flow reverses, the disc swings or lifts back to seal tightly against the seat, preventing backflow. The rubber lining ensures that the seat and body remain protected, while the precision-engineered disc creates a leak-free seal.

This design provides reliable performance even under fluctuating pressures, making it suitable for critical applications where contamination, corrosion, or leakage cannot be tolerated. Our check valves are designed to deliver smooth operation, minimal flow resistance, and extended service life, even in the most challenging environments.

Typical Applications

  • Chemical Processing Plants: Handles corrosive acids, alkalis, and aggressive fluids without degradation.

  • Water Treatment Facilities: Protects pumps and pipelines from backflow contamination.

  • Oil & Gas Pipelines: Ensures safe operation by preventing reverse flow of crude oil, fuel, or gas.

  • Power Generation Plants: Maintains reliable flow in cooling water and condensate systems.

  • Food & Beverage & Pharma: Maintains hygiene standards and prevents contamination.

By selecting the correct lining and seat material, our valve can be adapted to almost any media, ensuring reliable performance for your specific process.

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