Bolted body-bonnet connection is the principal design used in iron multi-turn valves. This gasketed joint is strong and easy to assemble/disassemble.

• 螺栓阀体式阀盖：铸铁多回转阀门的主要结构形式。这种带衬垫连接方式坚固耐用，并且易于安装和拆卸。