Resilient Seated Butterfly Valve – Series 3W/3L (Bray), Wafer & Lug Style, ISO Mounting

The Bray Series 3W/3L Resilient Seated Butterfly Valves are engineered for reliable and leak-free flow control across a wide range of industrial applications. The 3W wafer-style and 3L lug-style bodies feature a concentric disc and resilient elastomer seat to ensure tight shutoff in both directions, even at low operating pressures.

These valves offer a compact and economical design with top flange ISO 5211 mounting for direct attachment of electric or pneumatic actuators. The one-piece body is constructed from high-strength ductile iron and coated with a corrosion-resistant epoxy. The disc is available in multiple materials including stainless steel, aluminum bronze, or coated ductile iron to suit different media.

Ideal for water, HVAC, chemical, and general process service, the 3W/3L butterfly valves provide smooth throttling control and excellent flow characteristics. They are designed for longevity with replaceable seat inserts, stem bushings, and low-torque operation.

Specifications:

– Valve Type: Resilient seated butterfly valve
– Series: 3W (Wafer), 3L (Lug)
– Size Range: 2” to 48”
– Body Style: Wafer (3W) or Lug (3L)
– Body Material: Ductile iron (ASTM A536), epoxy-coated
– Disc Options: 316 stainless steel, aluminum bronze, nylon-coated ductile iron
– Seat Material: EPDM, NBR, or other elastomers (replaceable)
– Pressure Rating: Up to 200 psi (depending on size)
– Temperature Range: -29°C to +120°C (seat material dependent)
– Mounting: ISO 5211 actuator mounting pad
– End Connections: Fits between ANSI 125/150 flanges
– Operation: Manual lever or gear operator standard; pneumatic/electric actuators optional
– Features: Bi-directional sealing, blowout-proof stem, low torque operation
– Applications: Water treatment, HVAC, chemical, fire protection, and general industrial systems

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