Specifications
Resilient Seated Butterfly Valve – Series 31U
Size Range
2 – 12″ (50 – 300mm)
Body Materials
Ductile Iron, Carbon Steel, Nickel Aluminum Bronze
Temperature Range
0°F to 212°F (-18°C to 100°C)
Stem Materials
Stainless Steel, 17-4PH Stainless Steel, Monel K500
Pressure Ratings
285 psi (20 Bar)
Seat Materials
Bonded BUNA-N
Shutoff Rating
Bidirectional Bubble-tight
Disc Materials
316 Stainless Steel, Monel K500, Nickel Aluminum Bronze
Body Style
Lug
Flange Drilling
PN10, PN16, PN25, ASME Class 150
Testing Standard
API 598, EN 12266-1
Certifications
D.O.T. 54
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
On-Shore and Off-Shore Fire Protection
Features & Benefits
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.
