nominal diameter:dn50～2000mm；

nominal pressure:pn0.05～1.6mpa；

drive mode:automatic;

connection:flange；

structure:ordinary、automatic compensation type、ordinary square、automatic compensation ordinary square；

seal form: body seal、rubber seal、metal hard seal;

main material: cast iron, cast steel, steel plate welding；

main application:

drain valve：the exports of drainage pipe and sewage pipe;