A41H spring micro-opening closed safety valve is suitable for equipment and pipelines of oil, air, water and other media whose working temperature is ≤300℃. A41Y-P/R type spring suitable spring closed safety valve is used on equipment and pipelines with corrosive medium at working temperature ≤200℃, as an overpressure protection device.

A41Y spring micro-open closed safety valve is suitable for equipment and pipelines with working temperature ≤300℃, such as oil, air, water and other media. A41Y-P/R type spring suitable spring closed safety valve is used on equipment or pipelines with corrosive medium at working temperature ≤200℃, as an overpressure protection device.

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