Construction is as follows | Name | Bronze Double Disc swing check valve |
| Structure | Wafer type double-disc swing check valve |
| Size | 1/2"~24"; DN15~DN300 |
| Normal pressure | Class 150~300; PN10~PN40 |
| Design standard | API594,API 6D,ASME B16.34,MSS-SP-80,BS 5154,JIS B2011 |
| Marked | MSS SP-25 |
| End flange | ANSI B 16.5,ASME B16.47; EN1092,DIN2543~DIN2547 |
| Face to Face | API594,DIN3202,GB/T8937 |
| Test standard | API598,API 6D; DIN3230, EN12266,ISO 5208 |
| Suitable temperature | -20°C≤T≤150°C |
| Medium | sea water, oil, liquefied gas,steam |
| - Dual Plate |
| -With Spring |
| - Wafer, Round, Full Lug or Double Flange |
| -Pressure-temperaure Ratings: ASME B16.34;DIN2401 |
| - Soft or Metal Seated |
| - Retainer or Retainer Less Design |
| - Wafer Ends to Suit for Flanged Ends(ASME B16.5 and B16.47 A/B) |
| - Design:API594,API 6D,ASME B16.34,MSS-SP-80,BS 5154,JIS B2011 |
| - Flanged Ends to ASME B16.5;DIN2543~DIN2547;EN1092 |
| Body | Bronze,Al bronze (C95800, C83600, C84400, B62) |
| Disc | Bronze,Al bronze (C95800, C83600, C84400, B62) |
| Spring | Inconel X750 |
| Stem | Brass (1/4"~2"), SS 304,SS316(2-1/2"~24") |
| Spacer | Brass (1/4"~2"), SS 304,SS316(2-1/2"~24") |
| Seal faceing | Bronze,Al bronze (C95800, C83600, C84400, B62),NBR,EPDM,PTFE |
| Gasket | PTFE |
| Bolt | SS304,SS316 |
| Flying ring ng ring | SS304,SS316 |






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