scope:

This International Standard specifies the basic series of face-to-face or centre-to-face dimensions for two-way metal valves used in flanged pipe systems for ship and marine services. Each series of face-toface or centre-to-face dimensions can be used as required with flanges of mating dimensions conforming to ISO 7005-1, ISO 7005-2, and ISO 7005-3 or other national standards.

The range of pressure ratings, in "K" values, is 5 - 10 - 16 - 20 - 30 - 40 and those specified in ISO 5752.

The range of nominal sizes, in "DN" or "A" values, is 15 - 20 - 25 - 32 - 40 - 50 - 65 - 80 - 100 - 125 - 150 - 200 - 250 - 300 - 350 - 400 - 450 - 500 - 550 - 600 - 650 - 700 - 750 - 800 - 900 - 1 000 - 1 200.

Pressure rating can differ by valve materials, sizes, and types. Reference shall be made to relevant product standards. For details of pressure temperature ratings of K-series flanges, refer to JIS Standards in the bibliography of this International Standard. JIS F7300 specifies a comprehensive guide for selection of valves listed in Tables 1 to 5.