| Product type | Switch valve |
| Product description | Dual plate check valve |
| Model | H46H/X |
| Size | NPS 2”～48”(DN50～DN1200) |
| Operating temperature | -46℃～593℃acc to material |
| Operating pressure | CLASS 150～2500 （PN20～PN420） |
| Material | A216 WCB、WCC; A217 WC6、WC9、C5、C12、C12A、CA15; A351 CF8、CF8M、CF3、CF3M、CF8C、CN3MN、CK3MCUN、CN7M; A352 LCB、LCC; A494 CW-6MC、CU5MCuC、M35-1；A890 4A(CD3MN)、5A(CE3MN)、6A(CD3MWCuN); ASME B 148 C95800、C95500 .etc |
| Standard | API 6D、API 594、ASME B16.34 |
| Face to face | API 6D、API 594 |
| Connecting end | ASME B16.5、ASME B16.47 |
| Test standard | API 598、ISO 5208 |
| Operation | Auto |
| Application fields | electric power industry, petroleum refining, petrochemical industry, offshore oil, chemical industry and etc. |
| Seal material | 13Cr, STL , rubber, PTFE |
| Remark 1 | Apply to prevent the backflow of medium in the pipeline or the device. |
| Remark 2 | spring control the disc, moves sensitive, good sealing property |
