GB/T 1952-2015Marine low pressure bronze male threaded check valves (English PDF)

1 Scope

This standard specifies the Marine low pressure bronze male threaded valve (hereinafter referred to as a check valve) classification and marking requirements, test methods, inspection

Rules, packaging and storage.

This standard applies to water, fresh water, fuel, oil and temperature not higher than 250 °C steam ship line check valve design, manufacture and acceptance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 600-2008 marine piping valves General technical requirements

GB/T 1176-2013 Copper and copper alloy casting

GB/T 1184-1996 shape and position tolerances without individual tolerance value

GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance

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

Flag GB/T 3032 Ship pipeline accessories

CB * 821-1984 low pressure pipe nipple

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

3 Classification and Marking

Type 3.1

Predetermined type check valve as follows.

A Type --- straight valve;

Type B --- right angle valve.