This standard specifies requirement for product classification of water treatment equipment and equipment design, manufacture, inspection, property testing method as well as marking, packing, transportation and stock-piling, etc.
1.1 This standard is applicable to the following equipments:
a) Water treatment equipment with design pressure is no larger than 5 MPa, for pipe system within projects of complete plants scope may be implemented by reference of this;
b) Only in some operation steps during the whole process of using, it is equipped with three conditional water treatment equipment supervised by “supervision regulation for security technology of pressure vessel" (“vessel code” for short, same with the following). For instance, adopting machinery filter plant of compressed air backwash; adopting upflow regeneration ion-exchange plant of gas cap pressure method; adopting positive and negative ion admixture exchanger of resin mixed by compressed air as well as acid (alkali) store tank in the acid (alkali) system transporting by adopting compressed air, but the in-tank is not equipped with acid (alkali) elevator, etc.
1.2 This standard is not applicable to the following equipments:
a) Three conditional water treatment equipments supervised by "vessel code" and during the whole process of using;
b) Waste water treatment equipment (pools and gutters, etc.)
