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GESTRA BB 12G PN 10 Pressure Relief Valve
GESTRA BB 12G PN 10 Pressure Relief Valve

GESTRA BB 12G PN 10 Pressure Relief Valve

GESTRA BB 12G PN 10 valve is primarily used in flash steam systems or other applications where pressure control in steam and condensate lines is required. Its main purpose is to maintain a specific pressure level during the generation of flash steam from high-pressure condensate or steam.

Key areas of application include:

  • Flash Steam Recovery Systems: In flash steam vessels where low-pressure flash steam is generated from high-pressure condensate, to stabilize the pressure within the vessel and optimize steam recovery efficiency. This enables the recovery of heat energy contained in the condensate.
  • Condensate Discharge Lines: In industrial processes where condensate needs to be maintained at a specific pressure level.
  • General Industrial Applications Requiring Pressure Control: Anywhere steam, air, or inert gases are used, and a constant pressure level needs to be maintained in a low-pressure system.

This valve is crucial for enhancing energy efficiency and ensuring system stability.

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GESTRA BB 12G PN 10 is a direct-acting pressure relief valve with a cast iron (GG-25 or similar) body, adjustable by means of a weight or a spring. The "BB" code typically stands for "Blow-off" or "Pressure Relief," while "12G" indicates a specific model variant or design. PN 10 signifies that the valve is suitable for applications up to a nominal pressure of 10 bar.

This valve automatically opens when a set pressure is exceeded, discharging excess steam or gas and thereby maintaining the system pressure at the desired level. Weight-loaded versions are often preferred for flash steam vessels requiring continuous and stable pressure control, while spring-loaded versions offer more flexible adjustment options. Its internal components are typically made from corrosion-resistant materials. The valve helps in the efficient separation of flash steam in energy recovery systems, thus reducing overall operating costs.

  • Model: BB 12G
  • Type: Pressure Relief Valve (Weight or Spring Loaded)
  • Nominal Pressure (PN): 10 bar
  • Nominal Diameter (DN): Typically available from DN 50 to DN 200 (full range may vary by model and configuration).
  • Body Material: Grey cast iron (GG-25 or EN-GJL-250), suitable for steam and water applications.
  • Internals: Typically corrosion-resistant materials such as stainless steel or bronze.
  • Connection Type: Flanged connection (conforming to DIN PN 10 flange standards).
  • Operating Medium: Steam, flash steam, condensate, and sometimes gases.
  • Max. Operating Temperature: Generally in the range of 200°C - 250°C for PN 10 cast iron (dependent on material and pressure).
  • Features: Constant pressure control, contributes to energy recovery, simple and robust construction, low maintenance, high flow capacity, adjustable by weight or spring.