Usage:It has been widely used in the fields of petro-chem, pharmacy and elertric power etc. Usage:It has been widely used in the fields of petro-chem, pharmacy and elertric power etc.It is used by means of open and close on the pipes of steam,water and oil etc,under the pressure of≤1.0MPa. Outling and connect measurement:TypeNominal DN(mm)Measurement(mm)LDD1D2b-fz-dHD0Z44T-10 Z44W- ...