JIS B 2031 Grey cast iron valves (Japan)

Is JIS B 2031 still current?

Yes. JIS B 2031:2024 is the latest edition MechAtlas found (MechAtlas review: 27 October 2026). Check the publisher for amendments before you specify it.

What it covers

Japanese grey cast iron valves.

Parts that use JIS B 2031

• Gate valve (Japan (JIS), main)
  On-off valve with a wedge or disc that slides across the flow; used fully open or fully closed.
  Grey cast iron valves.
• Check valve (Japan (JIS), related)
  Valve that lets flow pass one way and closes automatically to stop back-flow.
  Grey cast iron valves.

Official source

MechAtlas does not reproduce standards. Check the official edition at the publisher's page for JIS B 2031 or the JIS store.

Other valves standards

• API 598 / ISO 5208 / EN 12266-1 Changing
  Valve inspection and pressure testing
• API 526 / 527 / 520 / ISO 4126 Current
  Relief valve dimensions, seat tightness, sizing
• API 594 Current
  Check valves: flanged, lug, wafer and butt-welding
• API 598 Current
  Valve inspection & testing
• API 600 Current
  Steel gate valves
• API 602 / 608 / 609 Current
  Compact gate, ball, butterfly valves
• API 6D Current
  Specification for valves (absorbed RP 6DR)
• ASME B16.10 / EN 558 Current
  Face-to-face dimensions
• ASME B16.34 Current
  Valves — flanged, threaded & welding end
• AWWA C504 Current
  Rubber-seated butterfly valves (water)
• BS 1868 Current
  Steel check valves, flanged and butt-welding, petroleum industry
• EN 1171 Current
  Cast iron gate valves

All Valves standards →