Bray International - Model Series 3W/3L -Resilient Seated Butterfly Valve
Ensure Bubble-Tight Sealing and Reliable Shutoff for Corrosive and Industrial Media. Long-Lasting Valves for High-Cycle Applications in Sour Gas and Steam Systems. The Bray Series 3W/3L resilient seated butterfly valves feature a one-piece body with a molded-in seat to increase the products pressure rating and ability to operate in higher velocity applications. The 3W/3L offers a high-strength through stem design utilizing an internal disc to stem connection to reduce hysteresis. The Series 3W/3L is engineered to provide bidirectional bubble-tight shutoff and isolation of the line media from the stem or valve body. Available in Buna-N and EPDM elastomers as well as Nylon Coated and stainless disc materials it offers a solid platform for a variety of applications. The ISO 5211 top flange allows for easy automation to pneumatic or electric actuation for on/off or modulation applications.
A. Molded-in Seat
Tightly controlled moldling process produces accurate and repeatable dimensions, which leads to consistently lower torques over the valve’s lifetime.
B. Profiled Disc
Precision profiled disc sealing edge which extends the valves life by reducing wear as the disc and seat come into contact when sealing.
C. Robust Flange Sealing
Tear-dropped shaped seat face enables tight sealing with a wide variety of industrial flanges.
D. End of Line Capability
Lug style valve allows for sealing at full rated pressure even when the downstream flange is removed
E. Upper and Lower Stem Bearings
To reduce operating torque and increase reliability in high cycle applications.
Size Range
NPS 2 – 24, DN50 - DN600
Body Materials
Cast Iron, Ductile Iron
Temperature Range
-20°F to 250°F (-29°C to 121°C)
Stem Materials
Stainless Steel
Maximum Allowable Operating Pressure
Maximum 250 psi (17.2 Bar)
Seat Materials
EPDM, BUNA-N
Shutoff Rating
Bidirectional Bubble-tight
Design Standard
API 609, Category A, EN 593, MSS SP-67
Flange Drilling
API 609, Category A, ASME B16.1 Class 125, ASME B16.5 Class 150, AS 2129 Table D & E, EN 1092 PN6, PN10, PN16, JIS 10K
Testing Standard
API 598, ISO 5208, EN 12266-1, MSS SP-61
Certifications
ABS Type Approval, CE/PED, CRN, FDA, ANSI/NSF 372, ANSI/NSF-61
Face to Face
API 609 Category A, EN 558 Series 20
Body Style
Wafer 3W, Lug 3L
Disc Materials
Nylon 11 Coated Ductile Iron, Stainless Steel
Applications
Potable Water, Wastewater, Seawater, HVAC, Data Centers, Sugar & Ethanol