This document 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 can indicate a need for full port openings, heavy wall sections and large stem diameters.
This document 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,
corresponding to nominal pipe sizes NPS:
— 1, 1¼, 1½, 2, 2½, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24,
applies for pressure Class designations:
— 150, 300, 600, 900, 1 500, 2 500,
and applies for pressure PN designations:
— 16, 25, 40, 63, 100, 160, 250 and 400.