HLSJ／KHLSJ air operated / electrically operated steam jacket sleeve small caliber single-seat control valve HLSJ／KHLSJ air operated / electrically operated steam jacket sleeve small caliber single-seat control valve mostly used in the situation of heat preservation, so that prevent the medium crystallize and sticker because of descent of temperature.

HTSJ／KHTSJ air operated / electrically operated steam jacket sleeve single-seat control valve HTSJ／KHTSJ air operated / electrically operated steam jacket sleeve single-seat control valve mostly used in the situation of heat preservation, so that prevent the medium crystallize and sticker because of descent of temperature.

HcBJ／KHCBJ air operated / electrically operated steam jacket sleeve balance cage shaped control valve HcBJ／KHCBJ air operated / electrically operated steam jacket sleeve balance cage shaped control valve mostly used in the situation of heat preservation, so that prevent the medium crystallize and sticker because of descent of temperature.