Check Valves Β· Swing Check Valves
BS Swing Check Valves
A BS-standard ductile-iron swing check valve execution for water and neutral-liquid service: DN50 to DN300, PN10/16, with brass-and-NBR sealing and a ductile-iron bonnet. It is the standard-compliance pick inside the swing-check family where the specification cites BS 5153 / BS 4504 rather than DIN or ANSI documents.
Part of the Swing Check Valves family
Last updated: 2026-11
Specifications
| size range | DN50-DN300 |
|---|---|
| pressure class | PN10/16 |
| body materials | Ductile Iron |
| temperature range | 0 to 80C |
| design standards | BS5153, BS 4504 PN6/PN10/PN16 |
| seal material | Brass +NBR |
| bonnet material | Ductile Iron |
| medium | Water and neutral liquid |
Application & selection guidance
Choose this execution when the project standard references BS 5153 and BS 4504 flange drillings at PN6-PN16; for DIN-referenced water schemes the DIN EN ductile-iron execution is the closer match. Both are water and neutral-liquid valves limited to 0-80 C on the benchmark page - do not extend them to hot-oil or steam duty.
Frequently asked questions
Which standard does this execution satisfy?
The specification block cites BS 5153 and BS 4504 PN6/PN10/PN16, which is what separates this execution from the DIN EN ductile-iron swing check variant - the valve principle is identical, the dimensional and flange reference differs.
What is the sealing arrangement?
Brass seal ring with NBR, in a ductile-iron body and bonnet, rated PN10/16 across DN50-DN300 for water and neutral liquids at 0 to 80 C.
Can it be used outside water service?
The page states water and neutral liquid as the medium. Chemical, hydrocarbon or steam duty needs a different material execution - the stainless steel or cast-steel check-valve executions are the applicable families, and medium compatibility should be confirmed at quotation.
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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