OVERVIEW: The SIL-SW center-guided silent check valves with a stainless steel body use a fully automatic spring assisted discs to eliminate water hammer while preventing flow reversal in the piping. The spring closure acts faster than swing check valves, which can slam shut with the flow reversal. These advanced designs have flow straightening vanes that reduce turbulence in incoming flow, which minimizes noise, vibrations, erosion, cavitations, and other factors that could result in premature failure.
The wafer style body design is compact, versatile, and fits inside of the bolting in a flanged connection. For 2" to 10" diameters, the wafer design with scallop allows for mating to either 150# or 300# flanges. 8" through 12" diameters are only for 150# flanges.
Standard discs and seats for the SIL-SW from Stayflow are stainless steel, and they have precision machined surfaces to maintain a tight seal that meets or exceeds API 598 leakage requirements. Soft seats are also available. Discs are designed with very low cracking pressure, which reduces the amount of energy needed to open the valve.
For clean liquids.
|SIL-SW1||SILENT||2||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||60||4.5||2.625||4.125||4.25||VCSIL-SW1SXT0200|
|SIL-SW1||SILENT||2.5||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||95||6.5||2.875||4.75||5.0||VCSIL-SW1SXT0250|
|SIL-SW1||SILENT||3||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||150||8.5||3.125||5.25||5.75||VCSIL-SW1SXT0300|
|SIL-SW1||SILENT||4||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||230||18.0||4.0||6.75||7.0||VCSIL-SW1SXT0400|
|SIL-SW1||SILENT||5||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||310||25.0||4.625||7.625||8.375||VCSIL-SW1SXT0500|
|SIL-SW1||SILENT||6||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||450||54.0||5.625||8.625||9.75||VCSIL-SW1SXT0600|
|SIL-SW1||SILENT||8||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||750||70.0||6.50||n/a||n/a||VCSIL-SW1SXT0800|
|SIL-SW1||SILENT||10||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||1250||140.0||8.25||n/a||n/a||VCSIL-SW1SXT1000|
|SIL-SW1||SILENT||12||WAFER||316SS||STAINLESS STEEL||STAINLESS STEEL||150/300||1800||324.0||11.25||n/a||n/a||VCSIL-SW1SXT1200|