蒸汽止回阀

型号：LKH476Y-P42-16P DN125 LKH476Y-P42-16P DN50 LKH476Y-P42-16P DN65 LKH476Y-P42-16P DN80 LKH476Y-P42-16P DN100 LKH476Y-P42-16P DN125 LKH476Y-P42-16P DN150