Important specifications for the selection of national standard valves

Power station valve JB/T3595(E101) JB/T3595(E101) JB/T3595(E101) / GB12224 (ASNIB16.25) JB/T3595(E101)

Low temperature valve JB/T7749 / GB12221 JB/T79 GB12224 JB9092

Reduced diameter forged steel valve JB/T7746 (replacing ZBJ16005) GB9131 JB/T7746 GB12221 JB/T7746 GB/T15188.1 GB9113 GB12224 JB9092

Steam trap ZBJ16007 / GB12250 GB4216 GB9113 / GB12251

Pressure reducing valve GB12244 GB12246 / JB2205 GB4216 GB9113 GB12224 GB/T13927 GB12245

Safety valve GB122421 GB12243 / JB2203 GB9113 JB/T2769 GB12224 GB12242

Iron plug valve GB12240 GB4216.1 GB12232 GB12221 GB 12240 GB4216 / GB/T13927

Diaphragm valve GB12239 Selected GB12221 GB12239 GB4216 GB9113 / GB/T13927 Gate valve Steel wedge type GB12234 BG9131 GB12231 GB9113 GB9113 GB12224 JB/T9092 (instead of ZBJ6006)
Iron wedge GB12232 GB4216.1 GB12232 GB12231 GB4216 GB 9113 / GB13927 (replacing GB498)

Pipeline steel flat plate JB/T5298 GB9131 JB/T5298 GB9113 GB9115 GB12224 JB9092

Iron double flat plate JB/TQ648 GB4216.1 GB12232 JB/T5298 GB4216.2～5 / GB/T13927

Globe valve steel GB12235 GB9131 GB12221 GB9112 GB12224 JB9092

Iron GB12232 GB4216.1 GB12232 GB12221 GB12233 GB9113 / GB/T13927

Needle JB/T7747 GB9131 GB/T15188 GB9116 GB12224 JB9092 Ball valve steel GB12237 GB9131 GB12221 GB12237 GB9113 / JB9092

Iron, copper GB/T15185 GB4216.1 GB12386 GB/T15185 GB12221 GB/T15188.3 / / GB13927

Pipeline steel JB/T7745 GB9131 GB12224 GB12221 JB/T7745 GB9113 GB12224 JB9092

Check valve steel swing type GB12236 GB9131 GB12221 GB9113 GB4216 GB12380 GB12224 JB9092

Iron swing type GB/T13932 GB4316.1 GB12232 GB12221 JB/T3932 GB9113 GB/T13402 / GB13927

Steel lifting type GB12235 GB9131 GB12221 GB9112 GB9113 JB9092 Iron lifting type GB12233 GB4316.1 GB12232 GB12221 GB12233 GB4216 GB9113 / GB13927

Butterfly valve flange, clamp GB12238 GB9131 GB4216.1 GB12232 GB12221 GB4216.2～4 GB9113 GB12224 GB13927

Metal seal JB/T8527 GB9131 GB12386 GB12221 GB/T15188.2 GB9113 GB9115 GB12380 / GB13927

Flue JB/T8692 GB9131 GB12221 GB/T15188.2 GB9115 / JB9092

Note: (1) Except for flanges and butt welding ends, the dimensions of socket welding connections adopt JB/T1751, and the dimensions of internal and external threaded connections adopt GB7306 and GB7307 respectively. ​

(2) In the JB/T79-94 machinery industry standard, the series 1 flange connection dimensions are interchangeable with the international GB9113-88, and the series 2 dimensions are interchangeable with the original machine standard JB79-58. ​

◆ANSI/ API American standard valve

Cast steel wedge gate valve AN1600 ANSIB16.34 ANSIB16.34 ANSIB16.10 ANSIB16.5 ANSIB16.25 API598

Cast steel stop valve ANSIB16.34 ANSIB16.34 ANSIB16.10 ANSIB16.25 ANSIB16.25 API598

Cast steel swing check valve ANSIB16.34 ANSIB16.34 ANSIB16.10 ANSIB16.25 ANSIB16.25 API598, AP16D

Lift check valve API602 ANSIB16.34 ANSIB16.34 ANSIB16.10 ANSIB16.25 / AP1598

Wafer butterfly valve API609 ANSIB16.34 AP1609 / / AP1598

Pipeline, flange ball valve AP16D ANSIB16.34 ANSIB16.10 ANSIB16.5 MSS-SP44 API605 B16.25 ANSIB31.4 B31.8 AP1598, AP16D

Forged steel valve AP1602 ANSIB16.34 API602 API602

Internal thread ANSIB2.1 Socket weld ANSIB16.11 AP1598

◆ Japanese steel valves adopt the main standard JIS (10k 20k) Japanese valves

Cast steel wedge gate valve B2073 B2083 B2074 B2084 B2002 B2212 B2214 B2003
Cast steel stop valve B2071 B2081 B2074 B2084 B2002 B2212 B2214 B2003

Cast steel swing check valve B2074 B2084 B2074 B2084 B2002 B2212 B2214 B2003

Two-piece flange ball valve AP16D 2201 (ANSIB16.34) 2002 (ANSIB16.10) B2212 B2214 B2003 (AP1598)