API 600-Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas Industries

خلاصه:
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 would indicate a need for full port openings, heavy wall sections and large stem diameters.
This International standard sets forth the requirements for the following gate valve features:

· bolted bonnet,
· outside screw and yoke,
· rising stems,
· non-rising handwheels,
· single or double gate,
· wedge or parallel seating,
· metallic seating surfaces,
· flanged or butt-welding ends.
It covers valves of the nominal pipe sizes NPS:
· 1; 1 ¼; 1 ½; 2; 2 ½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24,
corresponding to nominal pipe sizes DN:
· 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600