Breather Valves

Breather Valves


Nirmal Industrial Controls offers Breather Valves. These are useful as relief valves for blanketed vessels in which solvents are filled & drawn out at a high flow rate. These can also be fitted, on the process vessels to safeguard the process equipment where unpredicted fluctuations in pressure may occur. By retaining toxic vapors and avoiding atmospheric contamination these help to provide increased fire protection and safety. Pressure cum vacuum relief / breather valves are designed to protect your tanks from possible casualty due to over pressure created by thermal expansion & product movement into the tank and excessive vacuum created by thermal contraction & product movement out of the tank. At the same time it minimizes costly product evaporation / loss. Continued design improvements provide these valves with high efficiency, maximum flow capacity and minimum leakage. These are available "closed end hoods" type of standard design or with "pipe-away design" for vapor recovery. These can also be offered as only the vacuum relief valves with blind flange on pressure port and vice-versa.

Body Size & Connections: 1", 2", 3", 4", 6" 8", 10 & 12" Flanged to ANSI B16.5 Class 150 ratings. (RV/- Series: Different port sizes for pressure & vacuum can be provided).
Model Configuration

  • BV/04 : Pressure cum Vacuum Relief Valve
  • BV/03 : Pressure cum Vacuum Relief Valve with pipe away
  • BV/02 : Only Vacuum Relief Valve
  • BV/01 : Only Pressure Relief Valve
  • 1", 2", 3", 4", 6" 8", 10 & 12" Flanged to ANSI B16.5 Class 150 ratings. (RV/- Series: Different port sizes for pressure & vacuum can be provided)
Temperature Capabilities: 25°C to 80°C with Nitrile elastomeric parts -15°C to 180°C with Fluoro polymer. elastomeric parts

  • Tradition of Excellence: Continued design improvements and carefully engineered body, seat and pallet assembly results in a superior capacity at low pressure with minimal breakdown, thus conserving valuable tank content
  • Design Flexibility: These are available "closed end hoods" type of standard design or with "Pipe-away design" for vapour recovery
  • Easy to Maintain: The easily serviceable configuration and lightweight construction reduces maintenance and installation costs
  • Cohesion Resistant: Specially designed elastomer seating contributes to high resistance to cohesion of ice and gum formations, thus ensuring protection against pallet sticking to the seating surface. In addition, the body is self draining to keep condensates away from the seating surfaces

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