Nirmal Industrial Controls

CR Series

Self-operated upstream back pressure regulator for controlling upstream process pressure across a wide flow range.

The CR Series is a general-purpose, self-operated upstream pressure control valve used to control various fluids. These valves are designed to open proportionally when the inlet pressure exceeds a pre-set value, relieving excess pressure and maintaining the desired upstream pressure. The glandless construction eliminates gland leakage, making the CR Series ideal for zero-leakage applications.

Key Features

  • Easy Maintenance — Compact design with minimal moving parts — internals replaceable without pipeline removal.
  • Glandless Construction — Eliminates gland leakage entirely; ideal for zero-leakage applications.
  • Tight Shut-Off Capability — Special trim prevents wear and erosion for excellent shut-off over long working life.
  • Smooth Throttling Action — Precise throttling minimizes pressure surges and allows gradual pressure relief.
  • Low Pressure Buildup — Achieves required flow with minimal pressure increase downstream of the valve.

Applications

  • Oil and gas industry
  • Petrochemical plants
  • Chemical processing
  • Power generation facilities

Technical Specifications

Body Size1″ (DN25)
End ConnectionsScrewed NPTF, Screwed BSPF, Flanged ASME B16.5
Set Pressure Range0.4 to 10 kg/cm² (higher on request)
Temperature Range-25°C to 175°C