Marine-Grade Dual Disc Check Valve for Seawater Service
Description
Marine-Grade Dual Disc Check Valve for Seawater Service
Model: H76X-SW | Size: 12″ (DN300) | Rating: 150LB (PN20) | Connection: Wafer Type
TECHNICAL DATASHEET
| Parameter | Specification |
|---|---|
| Model Designation | H76X-SW (Seawater Duty Series) |
| End Connection | Wafer Type per API 594 Short Pattern • Face-to-Face: API 594 Table 5 • No Flange Bolting Required |
| Design Standard | API 594 / MSS SP-71 / NACE MR0175 |
| Body Material | Ductile Iron ASTM A536 Gr. 65-45-12 • Coating: 300µm Fusion-Bonded Epoxy (ISO 12944-C5M) |
| Discs Material | C95400 Aluminum Bronze (ASTM B148) • Seawater Enhancement: Micro-polished Surface (Ra ≤1.6µm) |
| Trim | Stem: UNS S31803 (F51 Duplex SS) Spring: F51 Duplex SS (DIN 17224) |
| Seat System | Primary: EPDM (ISO 4633) Secondary: C95400-to-316SS Metal Contact |
| Pressure Rating | ANSI 150LB @ 120°C (MAOP: 19.6 bar) |
| Installation | • Sandwiched Between ANSI B16.5 Flanges • Max Pipeline Misalignment: 1.5° |
| Flow Performance | • Cv Value: ≥420 • Velocity Limit: 4 m/s (Anti-Slam Guaranteed) |
| Seawater Certs | • DNVGL-RP-401 Compliant • ASTM G48 Method A Passed |
