GB/T 2030-2008Bronze suction valve for seaward sluice (English PDF)

1 Scope

This standard specifies the dimensions and sealing surface of the flange connection according to GB/T 569 and GB/T 2501 bronze sea suction valve (hereinafter referred to as pass

Sea valves) classification and marking requirements, test methods, inspection rules, packaging and storage.

This standard applies to fresh water, seawater piping systems ship with sea valve design, manufacture and acceptance.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 41-2000 hex nut grade C (eqv ISO 4034.1999)

GB/T 569 Marine flange connection dimensions and sealing surface

GB/T 600 marine piping valves General technical conditions (GB/T 600-1991, neq ISO 5208. 1982)

GB/T 1176-1987 Cast Copper Alloys conditions (neq ISO 1338. 1977)

GB/T 1184-1996 shape and position tolerances without individual tolerance value (eqv ISO 2768-2. 1989)

GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance tolerance (eqv ISO 2768-1. 1989)

GB/T 1958 Geometrical Product Specifications (GPS) shape and position tolerance testing requirements

GB/T 2501 Marine flange connection dimensions and sealing surface (four into bits) (GB/T 2501-1989, neq ISO 2084. 1974)

Flag GB/T 3032 Ship pipeline accessories

GB/T 4423-2007 Copper and copper alloy rod drawing

GB/T 11698 Marine flange length of the structure connecting metal valves (GB/T 11698-1989, neq ISO 5752. 1982)

GB/T 12229-2005 General valves carbon steel castings

CB/T 3927 Marine casting wall thickness of the valve member

3 Classification and Marking

Type 3.1

Sea valves type specified as follows.

Type B --- flange dimensions and sealing surface according to GB/T 569 of sea valves;

BS type --- flange dimensions and sealing surface according to GB/T 2501 of sea valves.