NV and SV Series Needle

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This instruction manual details the installation, operation, and maintenance of Hy-Lok’s NV and SV Series Needle Valve, used in commercial piping systems. Before attempting installation, make sure your piping system is free of contaminants. You will need two wrenches to complete the installation process. You will need a spanner if you’re disassembling the Needle Valve during maintenance.  

What's Inside

  • Installation
    • Installation Preparation
    • Connection of Taper Thread
    • Connection of Hy-Lok Tube Fitting
  • Operating
  • Maintenance
    • Replacement of part components
    • Disassembly
    • Leakage
    • Reassembly
  • Removal

Key Highlights

After reviewing the instructions in this guide, you will be able to:

  • Properly connect the taper thread and Hy-Lok tube fitting during the installation process
  • Safely open and close the NV and SV Needle Valve while operating
  • Perform maintenance tasks on the needle valve, including replacing parts, disassembling and reassembling the valve, and preventing pipe leakage

NV and SV Series Needle


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