Specifications
Resilient Seated Butterfly Valve – Series 20/21
Size Range
1 – 20″ (25 – 500mm)
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
Pressure Ratings
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 PN10
Testing Standard
MSS SP-61, API 598, EN 12266-1
Certifications
ABS, Bureau Veritas, CE/PED, DNV, NSF-61, SIL
Face to Face
MSS SP-67, API 609 Category A, EN 558
Applications
Sanitary Service, Mildly Corrosive, Toxic Media
Features & Benefits
The Series 20/21 resilient seated butterfly valve surpasses the high standards required in sanitary valve applications, and inherent flow characteristics and capabilities. Bray’s Series 20 valve is a wafer version with flange locating holes, and the Series 21 is the companion lug version for dead-end service and other flange requirements.
- Sanitary & Chemical applications
- One-piece disc/stem
- High Cv, low pressure drop
