| Product | Small size check valve. |
| Nominal diameter | 1/4 Inch - 4 Inch. |
| Design temp. | -196℃ - 573℃. |
| Design pressure | Class 150 - 2500 LB. |
| Material | Carbon steel, Stainless steel, Alloy steel, Bronze. |
| Design standard | API 602, BS 5352. |
| Face to face | Manufacture standard, ASME B16.10. |
| Connection end | NPT, SW, BW, Flange. |
| Test standard | API 598, ISO 5208. |
| Operation | x |
| Application | Power station, petroleum, chemical engineering. |
| Function 1 | Bolted bonnet, welded bonnet, pressure seal bonnet. |
| Function 2 | Swing type, lift type. |
| Function 3 | Full bore, reduce bore. |
| Function 4 | Integral flanged ends, welded on flanged ends. |