A21H-10C/P弹簧式安全阀当压力降低到规定值时，阀门自动关闭，保证设备和管路安全运行。型号A21H-10C/P、A21H-16C/P、A21H-25C/P、A21H-40C/P、A21H-64C/P、A21H-100C/P、A21H-160C/P、A21H-320C/P