1 Scope
This standard specifies designation, nominal duty point, dimensions and hydrostatic pressure test of end-suction centrifugal pumps (hereinafter referred to as pumps).
This standard is applicable to pumps with the maximum working pressure rating of 1.6 MPa.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 1: Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
3 Designation
The designation of the pumps consists of three parts of figures, with the first part indicating the diameter of the suction inlet, the second part indicating the diameter of the discharge outlet, and the third part indicating the nominal diameter of the impeller.
Example:
Foreword i
1 Scope
2 Normative references
3 Designation
4 Nominal duty point and dimensions
5 Hydrostatic pressure test
