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| End Standard: | ANSI B16.5/B16.47 Series A | Working Theory: | Dual Plate |
|---|---|---|---|
| Body Material: | Carbon Steel, Stainless Steel | Installation: | Horizontal Or Vertical (Upstream) |
| Structure: | Dual Plate | Meida: | Water, Sewage Etc |
API594 Spring Loaded Dual Plate Wafer Check Valve With Retainerless Design
DESIGN SPECIFICATIONS
| ITEM | APPLICABLE SPECIFICATION |
| Wall thickness and general valve design | API 594 |
| Pressure-temperature rating | ASME B16.34 |
| Face-to-face dimensions | API 594 |
| Flange design | 2–24” (50–600 mm) ASME B16.5 26” (650 mm) B16.47 Series A |
| Testing | API 598 |
| Materials | ASTM |
Material List
Carbon Steel
| ➀ BODY | ➂ DISC | ➁ BODY SEAT | ➃ DISC SEAT | ➅ SPRING | WETTED PARTS(2) |
| A216 Gr. WCB | A351 Gr. CF8M | Same as Body | Same as Disc | Inconel X-750 | 316 SS |
| A216 Gr. WCB | A351 Gr. CF8M | Viton A | Same as Disc | Inconel X-750 | 316 SS |
| A216 Gr. WCB | A351 Gr. CF8M | Stellite overlay | Same as Disc | Inconel X-750 | 316 SS |
| A216 Gr. WCB | A217 Gr. CA15 | 410 SS overlay | Same as Disc | Inconel X-750 | 410 SS(3) |
| A216 Gr. WCB | A217 Gr. CA15 | Stellite overlay | Same as Disc | Inconel X-750 | 410 SS(3) |
Low Temperature Carbon Steel
| ➀ BODY | ➂ DISC | ➁ BODY SEAT | ➃ DISC SEAT | ➅ SPRING | WETTED PARTS(2) |
| A352 Gr. LCC | A351 Gr. CF8M | Same as Body | Same as Disc | Inconel X-750 | 316 SS |
| A352 Gr. LCC | A351 Gr. CF8M | Buna-N | Same as Disc | Inconel X-750 | 316 SS |
| A352 Gr. LCC | A351 Gr. CF8M | Stellite overlay | Same as Disc | Inconel X-750 | 316 SS |
Stainless Steel
| ➀ BODY | ➂ DISC | ➁ BODY SEAT | ➃ DISC SEAT | ➅ SPRING | WETTED PARTS(2) |
| A351 Gr. CF8M | A351 Gr. CF8M | Same as Body | Same as Disc | Inconel X-750 | 316 SS |
| A351 Gr. CF8M | A351 Gr. CF8M | Viton A | Same as Disc | Inconel X-750 | 316 SS |
Installation
Dual Plate Check Valves must be installed with the arrow in the direction of the normal flow. This must be checked carefully before installing the valve. Placing a check valve in the opposite direction to the flow will prevent the disc from operating in the intended manner.
The preferred orientation is vertical upward flow or horizontal. The valve may be installed in other orientations, but any deviation from vertical or horizontal is a compromise to the design of the valve. Installation upside-down is not recommended. If installed horizontal, pins MUST be vertical.
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