Bray Series 20/21 Resilient Seated Butterfly Valve

Bray Series 20/21 Resilient Seated Butterfly Valve

Bray Series 20/21 Resilient Seated Butterfly Valve

Specifications
Size Range:1" - 20" (25mm - 500mm)
Body Style:Wafer, Lug
Temperature Range:-20°F to 400°F (-29°C to 204°C)
Pressure Ratings:Bidirectional Bubble-tight Shutoff: 150 psi (10.3 Bar)
Body (CWP): 150 psi (10.3 Bar)
Body Materials:Cast Iron, Ductile Iron, Stainless Steel, Aluminum
Disc/Stem Materials:Stainless Steel, EPDM Molded over SS, BUNA-N Molded over SS
Seat Materials:BUNA-N, EPDM, PTFE Lined EPDM, FKM Polyurethane
Applications:Sanitary Service, Mildly Corrosive, Toxic Media

Bray Series 20/21 Resilient Seated Butterfly Valve

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
Bray Series 20/21 Resilient Seated Butterfly Valve

[A] STEM BUSHING: Non-corrosive, heavy duty acetal bushing absorbs actuator side thrust. 

[B] STEM SEAL: Double "U" cup seal design is self-adjusting and gives positive sealing in both directions and prevents external substances from entering the stem bore. 

[C] DISC / STEM: One-piece design. The disc edge is spherically machined and hand polished to produce a bubble-tight shutoff, minimum torque, and longer seat life. The disc/stem design inherently provides complete protection from particle entrapment and bacterial decay, protection that is required for sanitary performance. For superior erosion and abrasion resistance, the one-piece disc/stem is fully encased in either EPDM or BUNA-N. The thin disc profile provides a much higher Cv (up to 50% greater than most through-stem designs) and greater pressure recovery, thus resulting in lower pressure drops and a more energy-efficient valve. 

Bray Series 20/21 Resilient Seated Butterfly Valve

If you have any interest, pls feel free to contact me as below

Jackie Ma