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Model NZ and NZS Axial Flow Nozzle Check Valve

Brand: Champion Valves Inc

Champion Valves, Inc. Models NZ and NZS axial flow nozzle check valves are engineered to provide the longest and most reliable protection of gas and liquid piping systems.

CVI’s axial flow non-slam design minimizes water hammer and associated pressure transients.

Our design is energy efficient, has an extremely long service life and requires minimal maintenance costs over the life of the valve.

Models NZ and NZS axial flow nozzle check valves are designed with a spring-loaded, center-guided, profiled disc that is guided through bearings in the valve body guide.

The valve body is a streamlined axial design with a central diffuser that reduces pressure loss through the valve.

Using the latest simulation software and applying years of application experience, Models NZ and NZS have one of the most efficient pressure drop designs available today.

Our commitment to continuous design improvements has led to many unique features,including a hexagonal shaft design that ensures smooth travel of the disc.
Features
  • The Geometry of the Valve’s Body and Disc are Designed Using Computational Fluid Dynamics to Streamline the Flow Path
  • Internal Diffusers Hold the Guide to the Body
  • Spring is Engineered Based on Specific Operating Conditions
  • Lightweight, Singular Compression Spring-loaded Disc
  • The Disc Travels Only a Short Distance from the Open to Closed Position
  • Conical Disc is Self-aligning
  • Disc is the Only Moving Part
  • Large Valves Feature Front and Rear Bearing Supports
  • Unique Hexagonal Shaft Provides a Passageway for Suspended Particulate to Flow Through Shaft/bearing Area, while Simultaneously Reducing Drag
  • Multiple Material and Trim Options Available

Specifications

Style

  • API 6D
  • Standard

ASME/API Series

  • 150 Class
  • 300 Class
  • 600 Class
  • 900 Class
  • 1500 Class
  • 2500 Class

Body and Disc Material

  • Carbon Steel
  • Duplex
  • Alloy 20
  • Hastelloy C-276
  • 410 Stainless Steel
  • 317 Stainless Steel
  • Monel
  • Nickel
  • 316 Stainless Steel
  • 304 Stainless Steel
  • Low Temperature Carbon Steel ASTM A352, Group LCC
  • Low Temperature Carbon Steel ASTM A352, Group LCB

Seat Material

  • Buna-N
  • Devlon
  • EPDM
  • Silicone
  • 410 Stainless Steel
  • Nylon
  • Stellite
  • Neoprene
  • Integral Metal
  • RPTFE
  • 316 Stainless Steel
  • Teflon
  • Viton
  • PEEK

Spring Material

  • 316 Stainless Steel
  • Monel
  • Inconel
  • Inconel X-750

End Connection

  • Serrated Raised Face
  • Ring Joint
  • Male and Female Flanged Face
  • Butt Weld
  • Socket Weld

  • Gas and Crude Oil Transmission
  • Power Generation
  • Hydrocarbon Processing
  • Water Transmission
  • Petrochemical / Chemical Processing

Documentation

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