GB/T 588-2009Marine bronze flanged stop check valves (English PDF)

1 Scope

This standard specifies the flange size and flange sealing surfaces conform Marine Bronze GB/T 569 and GB/T 2501 requirements Ended

Return valve (hereinafter referred to as the cut-off valve) classification and marking requirements, test methods, inspection rules, packaging and storage.

This standard applies to the media as fresh water, sea water, oil, fuel and temperature does not exceed 250 °C steam cutoff valve in the piping system

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 569 Marine flange connection dimensions and sealing surface

GB/T 600 marine piping valves General technical requirements

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

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

GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance tolerance (eqvISO 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, neqISO 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 11698-2008, ISO 5752. 1982, MOD)

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

3 Classification and Marking

Type 3.1

As specified type check valve as follows.

A type --- flange dimensions and sealing surface of the through-type shutoff valve according to GB/T 569 provisions;

Type B --- flanged rectangular cut-off valve size and sealing surface according to GB/T 569 provisions;

AS type --- flange dimensions and sealing surface of straight cut-off valve according to GB/T 2501 provisions;

Rectangular cut-off valve BS type --- flange dimensions and sealing surface according to GB/T 2501 regulations.