Check Valves Β· Swing Check Valves
Forged Steel Swing Check Valves
Forged steel swing check valves are the forged-body, small-bore execution of the swing check principle: the body is machined from forged A105-family material rather than cast, so wall integrity holds up at the Class 800 to Class 2500 ratings where castings are hardest to qualify. The benchmark execution covers DN15 to DN50 with buttweld, socketweld or flanged ends, forged F22/F304L/F316L trims, and testing to API 598.
Part of the Swing Check Valves family
Last updated: 2026-11
Specifications
| size range | DN15 to DN50 |
|---|---|
| pressure class | Class 800 to Class 2500 |
| body materials | A105, F22, F304L, F316L |
| body materials | A105, F22, F304L, F316L |
| disc materials | A105, F22, F304L, F316L |
| end connections | Buttweld, Socketweld, Flanged |
| end connections | ASME B16.11 |
| end connections | ASME B1.20.1 |
| design standards | API 602, BS 5352, ASME B16.34 |
| testing standards | API 598 |
| face to face | ASME B16.10 |
| stem materials | F6, F304, F304L, F316L |
| gland flange materials | A105, F22, F304L, F316L |
| stem nut materials | A276 410 |
| handwheel materials | A197 |
| flange standards | ASME B16.5 |
Application & selection guidance
Select this execution for small-diameter, high-pressure lines - seal injection, chemical injection, boiler and sampling service - where the bore is too small for cast construction to be economic and the class is too high for standard cast swing checks. Pick the trim (F22 for hot service, F304L/F316L for corrosive media) against the medium, and match the end connection to the piping standard: buttweld and socketweld per ASME B16.11, screwed per ASME B1.20.1, flanged per ASME B16.5.
Frequently asked questions
Why forged steel for a check valve instead of cast?
At DN15 to DN50 and Class 800 to Class 2500, a forged A105-family body gives a denser, defect-free pressure boundary; cast bodies at this size carry proportionally thicker walls and harder qualification. The benchmark page lists forged body, disc, bonnet and gland flange in A105, F22, F304L and F316L, so the same forging route covers the pressure boundary end to end.
Which end connections does this execution support?
The benchmark page declares buttweld, socketweld and flanged ends, dimensioned per ASME B16.11 for socketweld, ASME B1.20.1 for screwed, and ASME B16.5 for flanged, with face-to-face per ASME B16.10. Match the connection to the mating pipe class rather than assuming interchangeability.
What information is needed to quote a forged steel swing check valve?
Nominal size within DN15 to DN50, pressure class from Class 800 to Class 2500, body and trim material (A105, F22, F304L or F316L against the medium and temperature), end connection and facing standard. Those points fix the forging route and documentation set in one pass.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry β typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order β state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage β seat compounds age fastest in direct sunlight and freezing conditions.
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