SERIES 31U
Product specifications
| Specifications | Test method | ||
|---|---|---|---|
| Size Range (NPS) | 2 - 12 | ||
| Size Range (DN) | 50 - 300 | ||
| Temperature Range (°C) | -18 - 100 | ||
| Temperature Range (°F) | 0 - 212 | ||
| Shutoff Rating | Bidirectional Bubble-tight | ||
| Body Style | Lug | ||
| Flange Drilling ASME | Class 150 | ||
| Flange Drilling EN 1092 PN | 25, 10, 16 | ||
| Certifications | ABS, ATEX, CRN, D.O.T. 54, DNV, NSF 61/372, PE(S)R, PED | ||
| Body Materials | Carbon Steel, Ductile Iron, Nickel Aluminum Bronze | ||
| Stem Materials | 17-4 PH Stainless Steel, Monel K500, Stainless Steel | ||
| Seat Materials | Bonded BUNA-N | ||
| Disc Materials | 316 Stainless Steel, Monel K500, Nickel Aluminum Bronze | ||
| Testing Standard | API 598, EN 12266-1 | ||
| Face to Face | API 609, Category A, EN 558 Series 20 | ||
| Applications | High Pressure Industrial and Marine Dead-End service, On-Shore and Off-Shore Fire Protection | ||
Product description
Bray's Series 31U resilient seated butterfly valve is specifically designed for onshore and offshore fire protection where the applicable certification is D.O.T. 54 (UK Department of Trade). The series 31U is designed to withstand high line velocities and pressure.
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