Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries ISO 15761

Steel gate, globe and check valves for sizes

DN 100 and smaller, for the petroleum and

natural gas industries

ISO

15761

Scope
This International Standard specifies the requirements for a series of compact steel gate, globe and check valves for
petroleum and natural gas industry applications.
It is applicable to valves of
— nominal sizes DN 8, 10, 15, 20, 25, 32, 40, 50, 65, 80 and 100,
— corresponding to nominal pipe sizes NPS , , , , 1, , , 2, , 3 and 4, and to pressure designations of Class 150, Class 300, Class 600, Class 800 and Class 1500. Class 800 is not a listed class designation, but is an intermediate class number widely used for socket welding and threaded end compact valves.
It includes provisions for the following valve characteristics:
— outside screw with rising stems (OS & Y), in sizes and pressure designations including Class 800;
— inside screw with rising stems (ISRS), in sizes and pressure designations of Class ;
— socket welding or threaded ends, in sizes and pressure designations of Class 800 and Class 1500;
— flanged or butt-welding ends, in sizes and pressure designations of , excluding flanged end Class 800;
— bonnet joint construction — bolted, welded, threaded with seal weld, and union nut for nominal pressure rating Class ;
— body seat openings;
— materials, as specified;
— testing and inspection.
This International Standard is applicable to valve end flanges in accordance with ASME B16.5 and valve body ends having tapered pipe threads to ISO 7-1 or ASME B1.20.1. It is applicable to extended body construction in sizes and pressure designations of Class 800 and Class 1500, and to bellows and bellows assembly construction as may be adaptable to gate or globe valves in sizes . It covers bellows stem seal type testing requirements

download