供应德标暗杆硬密封闸阀To supply DIN metal seal non-rising stem gate valve

主要零部件main parts and material

阀体body，阀盖bonnet，阀板disc    灰铁grey iron,GG25

阀杆stem                                    不锈钢stainless steel,黄铜brass

密封圈seal ring                            不锈钢stainless steel,黄铜brass​