Butterfly Valves
Bray - Resilient Seated Butterfly Valve - Series 20/21
Reliable, Certified Valves for Food, Beverage, and Chemical Systems
The Series 20/21 resilient seated butterfly valve surpasses the high standards required in food and beverage valve applications. Bray's Series 20 valve features a wafer body design with flange locating holes, and the Series 21 is lug version provides dead-end service capability.
- Food and Beverage & Chemical applications
- One-piece disc/stem
- High Cv, low pressure drop
Specification / Detail
| Size Range | NPS 1 to 20 / DN 25 to 500 |
| Body Materials | Cast Iron, Ductile Iron, Stainless Steel, Aluminum |
| Temperature Range | -20°F to 400°F (-29°C to 204°C) |
| Stem Materials | Stainless Steel, EPDM Molded over Stainless Steel, BUNA-N Molded over Stainless Steel |
| Maximum Allowable Operating Pressure | 150 psi (10 Bar) |
| Seat Materials | EPDM, BUNA-N, PTFE Lined EPDM, FKM, Polyurethane |
| Shutoff Rating | Bidirectional Bubble-tight |
| Disc Materials | Stainless Steel, EPDM Molded over Stainless Steel, BUNA-N Molded over Stainless Steel |
| Body Style | Wafer, Lug |
| Design Standard | MSS SP-67, API 609 Category A |
| Flange Drilling | ASME B16.1 Class 125, ASME B16.5 Class 150, EN 1092 PN 10 |
| Testing Standard | MSS SP-61, API 598, EN 12266-1 |
| Certifications | ABS, ATEX, Bureau Veritas, DNV, NSF 61/372, PED, PE(S)R, SIL |
| Face to Face | MSS SP-67, API 609 Category A, EN 558 |
| Applications | Sanitary Service, Mildly Corrosive, Toxic Media |