Valve API602 detection
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Tel: 022-23892103 WeChat: 13102238283
Valves shall be marked in accordance with the requirements of B16.34 ASME, in addition to the identification tag can be marked on the API 602 mark, but also should include the following 1 and 2 requirements, but not limited to these.
1, the valve should be done as follows:
A. threaded end, socket welding end or body extended valve: 800 or 1500.
B. flange connecting end valve: 150300600 or 1500.
C. butt welding end valves: 150300600800 or 1500.
2, each valve should have a solid metal corrosion resistance of the metal identification card, the above should give the following information:
A. manufacturing plant name.
Type, type, or number of B. manufacturing plant.
C. specifications.
D. at 100 degrees F (38 C) under suitable pressure rating.
E. body material.
F. adjusting material.
G. and valve body is not the extension of the material at the same time.
This standard involves end flange connection, threaded, socket welding connection and butt welding connection of small steel gate valve, comprising a valve body and the corresponding ASME B36.10M or ASME B36.19M in the following standard pipeline lengthened:
A) NPS 4 and flange smaller welding end and butt weld ends, b) NPS 2 thread 1/2 and smaller connector and socket welding end, c) NPS 2 and smaller corrugated tube sealing valve cap.
This standard also includes the following types: valve
A. 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 welding welded or threaded connection and the valve cover.  
B. 1500 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 kinds of body lengthened valve, comply with the above a and B, but in NPS 1/2, 3/4, 1, 1 and 2 1/2 various specifications, one end is the convex end end is a concave end, the other end of the NPS 1/2 concave end is NPS 3/4 convex end.  
E. threaded convex in 1500 or 800 in the class of NPS 1/2 specifications, are not included in this standard.  
F. with bellows valve stem seal, there are 150300600800 and 1500 of the additional requirements included in Appendix A