The DFT® GLC® NAB (Nickel-Aluminum Bronze) Silent Check Valve is a spring-assisted, nozzle style, non-slam check valve that is designed to withstand the harsh environments of salt and brackish water applications where corrosion resistance and marine life deterrents are a must. DFT®'s center guided check valves provide reliable, low-maintenance service and solve the problems associated with water hammer and severe applications and environments.
Unit of Measure



N/A ASME Class 150 & 300

Line Size

N/A 1 to 24 in


N/A Nickel-Aluminum Bronze

Trim Material

N/A Duplex Stainless Steel Monel® Nickel-Aluminum Bronze Stainless Steel


N/A Flat Face Flanged Ends



  • "Short" Face-to-Face dimensions
  • Standard body materials:
    • Nickel-Aluminum Bronze
  • One-piece body
  • Spring-assisted silent closing, non-slam
  • Center-guided
  • Dual-guided stem
  • Horizontal or vertical installation
  • Protected spring
  • Easy maintenance
  • Versatile
  • ASME Class 150 & 300
    • 1" to 24" Line size
    • Flat face flanged ends
    • MSS-SP61 seat leakage
  • Axial flow
  • Nozzle style
  • Options:
    • Inconel® X-750 Spring
    • Soft seat
    • Custom sizing low flow
    • Severe service trim
    • Stellite® trim
  • Trim Options:
    • Nickel-Aluminum Bronze
    • Monel®
    • Stainless Steel
    • Duplex SS