A44Y-64/100C type full-open closed safety valve with spanner spring is suitable for equipment and pipelines with working temperature ≤300℃ for air, steam, petroleum and other media. Type A44Y-64/100P/R full-open closed safety valve with spanner spring Type safety valve is suitable for equipment with corrosive media at working temperature ≤200℃, as an overpressure protection device.

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