供应德标暗杆软密封闸阀To supply resilient seat non-rising stem gate valve

主要零部件main parts and material

阀体body，阀盖bonnet          球墨铸铁ductile iron

闸板disc                             球墨铸铁ductile iron with EPDN/NBR​

阀杆stem                            不锈钢stainless steel