HON 684R

HON 684R

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HON 684R is a spring-loaded, diaphragm-operated twin-valved safety relief valve. It is ideal for deployment at transmission, commercial and industrial facilities. It is particularly useful for protecting pipework and pressure vessels from excessive pressure​.​​​​​

Features include: 

  • Balanced twin-valve construction

  • Very high flow rates

  • High actuating accuracy

  • Reduced bore valves available

  • Suitable for natural, non-aggressive and manufactured gases; nitrogen, carbon dioxide and propane; and other gases upon enquiry

  • Max. inlet pressure pmax8.6 bar

  • Relief pressure range Wd0.207 to 6.9 bar

  • Pipe sizes: DN 50, DN 80, DN 100, DN 150

  • Temperature range: 20 to 60 °C.

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