PDF
GB/T 12221-2025 Active
GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions
Abstract
This document specifies the structural length and tolerances of metal valves.
This document applies to flange-connected, butt-welded, and clamped metal valves with nominal sizes ranging from DN8 to DN4000 and nominal pressures of PN2.5 to PN400, or nominal sizes of NPS1/4 to NPS160 and nominal pressures of Class125 to Class2500 (valve types include: gate valves, globe valves, ball valves, butterfly valves, plug valves, diaphragm valves, and check valves).
Note: The correspondence between nominal sizes DN and NPS is shown in Appendix B.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 12221-2025 |
| CCS | \nValve |
| ICS | \nValve Comprehensive |
| Implement Date | 2026-05-01 |
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$ 140
Subtotal
$ 140
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Order Total (incl. tax)
$ 140