American Petroleum Institute

Steel Gate, Globe, and Check Valves for Sizes NPS 4 (DN 100) and Smaller for the Petroleum and Natural Gas Industries - Ninth Edition; Effective Date: April 1, 2010
 N STD 602 RUSSIAN

Annotation

1 Scope

1.1 This standard covers flanged-end, threaded-end, socket-welding-end, and butt-welding-end compact steel gate valves, including extended-body type, corresponding to nominal pipe sizes in ASME B36.10M or ASME B36.19M as follows: a) flanged-end and butt-welding-end in sizes NPS 4 and smaller, b) threaded-end and socket-welding-end in sizes NPS 2? and smaller, and c) bellows seal bonnet types in sizes NPS 2 and smaller. The following valves are specifically covered by this standard:

a. Class 800 valve with threaded, socket-welding, or butt-welding ends; an inside screw with rising stem (ISRS) and threaded packing nut or an outside screw and yoke (OS&Y) with rising stem and bolted packing-gland flange; and a bolted, union, welded, or threaded-and-seal-welded bonnet.

b. Class 1500 valve with threaded, socket welding, butt-welding, or flanged ends; an OS&Y with rising stem and bolted packing-gland flange; and a bolted, welded, or threaded-and-seal-welded bonnet.

c. Class 150, 300, and 600 flanged-end or butt-welding-end OS&Y valves with rising stem; bolted packing-gland flange; and a bolted, welded, or threaded-and-seal-welded bonnet.

d. Class 800 and Class 1500 extended-body valves conforming to items a and b above, except with male by female ends in sizes NPS ?, ?, 1, 1?, and 2 and in size NPS ? male by NPS ? female.

e. Threaded-end male extensions for Class 1500 or for size NPS ? in Class 800 are not covered by this standard.

f. Class 150, 300, 600, 800, and 1500 valves with bellows stem seal with the additional requirements covered in Appendix A.