ASME B16.34 Valves — flanged, threaded & welding end
CurrentLatest edition found. Still confirm amendments with the publisher.
- Edition
- 2025
- Publisher
- ASME
- Part family
- Valves
- Reviewed
- 12 October 2026 · source checked
Is ASME B16.34 still current?
Yes. 2025 is the latest edition MechAtlas found (MechAtlas review: 12 October 2026). Check the publisher for amendments before you specify it.
What it covers
Pressure-temperature and construction reference for covered valves.
Edition research: 2025
- Material
- Steel
- Typical application
- Process piping
- What you specify
- Size; class; end connection
- Watch out
- Specify material group and service conditions.
Parts that use ASME B16.34
- Gate valve (USA (ASME / ASTM), grade)
On-off valve with a wedge or disc that slides across the flow; used fully open or fully closed.
Grades: Class ratings (pressure-temperature)
Valve ratings, wall thickness, marking. - Ball valve (USA (ASME / ASTM), grade)
Quarter-turn valve with a drilled ball that opens or closes flow; used for quick tight shut-off.
Grades: Class ratings (pressure-temperature) - Butterfly valve (USA (ASME / ASTM), grade)
Quarter-turn valve with a rotating disc, used for isolation or flow control in water, air and process lines.
Grades: Class ratings
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for ASME B16.34 or the ASME store.
Open in MechAtlasCheck a drawing callout
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 - 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 - EN 16767 Current
Metallic check valves