API STD 600 RUSSIAN

Abstract

This International Standard specifies the requirements for a heavy duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions indicate a need for full port openings, heavy wall sections and extra large stem diameters.<br>This specification sets forth the requirements for the following gate valve features:<br>&#8212; bolted bonnet;<br>&#8212; outside screw and yoke;<br>&#8212; rising stems;<br>&#8212; non-rising handwheels;<br>&#8212; single or double gate;<br>&#8212; wedge or parallel seating;<br>&#8212; metallic seating surfaces;<br>&#8212; flanged or butt-welding ends.<br>It covers valves of the nominal sizes DN:<br>25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600<br>and is applicable for pressure designations PN:<br>20; 50; 110; 150; 260; 420<br>when metric sized bolt holes are provided in end flanges and PN designations are marked on the valve body.<br>It also covers valves of the corresponding nominal pipe sizes NPS:<br>1; 1&#188; ; 1&#189; ; 2; 2&#189; ; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24<br>and applies for equivalent nominal Class ratings:<br>150; 300; 600; 900; 1 500; 2 500<br>when inch-sized bolt holes are provided in end flanges and Class designations are marked on the valve body.<br>It also covers additional marking requirements for valves that are PN (or Class) designated but have flanges drilled for inch (or metric) bolt holes.