Check Valve

Features

• Automatic Shut-Off: Closes instantly upon detecting a flow reversal.
• Closure Assistance: Options with spring-assisted return ensure fast and effective closing.
• Variety of Designs: Available in swing, tilting disc, piston, and ball configurations to meet different flow and pressure requirements.
• Stable Operation: Moving elements are aligned to minimize vibration and wear.
• Low Maintenance: Simple mechanical design reduces maintenance requirements, optimizing system availability.
• System Protection: Highly resistant to water hammer and back pressure, safeguarding infrastructure.
• Reliable Sealing: Tight shut-off with metallic or coated discs for extended durability.
• Flow Efficiency: Low pressure drop during normal operation, ensuring minimal process disruption.
• Long Service Life: Robust design guarantees extended lifespan, even in severe service conditions.
• Versatile Connections: Adaptable to flanged, threaded, or welded connections.

Body Design

• Robust bodies designed to withstand high pressures and temperatures, manufactured in configurations that vary by type (swing, piston, ball, or tilting disc).
• Bodies can be monoblock, two-piece, or include flanged, threaded, or welded connections, ensuring structural integrity and ease of installation.
• Designed to minimize pressure drop and withstand water hammer.

Construction Materials

• Body Materials: Carbon Steel (A105, LF2); Stainless Steel (304, 316); Duplex and Super Duplex Alloys; Nickel Alloys (Inconel, Hastelloy); Low-Temperature Carbon Steel (LTCS).
• Trim Materials (Internal): Discs or flaps in hardened stainless steel or Stellite-coated; Metallic or plastic-coated seats (PTFE, PEEK) for improved sealing; Stainless steel springs for fast closure (spring-assisted designs); Corrosion- and erosion-resistant materials depending on fluid conditions.

Trim Design

• Moving elements such as flaps, discs, or pistons allow flow in one direction and block reverse flow.
• Internal components made from corrosion-, erosion-, and wear-resistant materials; may incorporate springs for fast and secure closure.
• Trim optimized to prevent vibration and ensure tight sealing.

Applications

• Rotating Equipment Protection: Safeguards pumps, compressors, and turbines from reverse flow damage.
• Steam and Condensate Networks: Commonly used in power plants and energy recovery systems.
• Process Circuits: Applied in water and chemical process circuits to maintain flow direction.
• Backflow Prevention: Critical in systems at risk of flow reversal, ensuring operational safety.