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API 600 Gate Valve

Wegman valves offers various types of gate valves

WegmanValve Newco cast steel gate valves

API 600 gate valve
Bolted bonnet steel gate valves for pertroleum and natural gas industries is the title of the standard.

It 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.
This specification 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 sizes DN:
25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600
and is applicable for pressure designations PN:
20; 50; 110; 150; 260; 420
when metric sized bolt holes are provided in end flanges and PN designations are marked on the valve body.
It also covers valves of the corresponding nominal pipe sizes NPS:
1; 11/4; 11/2; 2; 21/2; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24
and applies for equivalent nominal Class ratings:
150; 300; 600; 900; 1 500; 2 500
when inch-sized bolt holes are provided in end flanges and Class designations are marked on the valve body.
It also covers additional marking requirements for valves that are PN (or Class) designated but have flanges drilled
for inch (or metric) bolt holes.