Cut-off valve API602 detection
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Telephone: 022-23892103
Scope of application: oil and gas industry with the nominal size of less than and equal to NPS 4 of the steel gate valve, globe valve and check valve
1, this standard involves end flange connection, threaded, socket welding connection and butt welding connection of small steel gate valve, comprising a valve body corresponding to the ASME B36.10M or ASME B36.19M in the Standard Specification for pipeline lengthened: a) NPS 4 and smaller flange welding end and butt weld ends, b) thread NPS 2 1/2 and smaller connector and socket welding end, C NPS 2) and smaller bellows seal valve cover type.
2, this standard also includes the following types: A. valve 800 valve, threaded connection, socket weld end connection or butt welding; with inner screw lift rod (ISRS) gland flange and threaded packing nut or bolt connection with the lifting rod and the outer screw and the bracket (OS&Y); with bolt connection joint, welded or threaded connection and welded bonnet. B. 1500 type valve, threaded connection, socket welding connection, end butt welding connection or flange connection; connection with external screw and bolt support and lift rod seal packing gland flange; with bolt connection joint, welded or threaded connection and welded bonnet.
C. 150300 and 600 types of valves, flanged end or butt welding ends, with lifting rod and the outer screw bracket; packing gland bolts with flange; bolt connection joint, welded or threaded connection and welded bonnet.
D. 800 and 1500 types of valve body lengthened, in accordance with the above a and B, just in 1/2 3/4, NPS, 1, 1 1/2 and 2 in each specification, one end is convex, one end is concave, the other end of the 1/2 NPS 3/4 NPS.
E. 1500 types of thread in the convex end or the 800 class of 1/2 NPS specifications, not included in this standard.
F. with bellows seal, there are additional requirements of the 150300600800 and 1500 types of