337 Highlandia Drive Baton Rouge, LA 70810 1.800.299.4142 BBP@BBPSALES.COM


Bray Series 30/31 Resilient Seated Butterfly Valve


The Bray Series 30/31 Resilient Seated Butterfly Valve features a high strength through-stem design that allows for easy disassembly and superior in-line support of the disc.

The Bray Series 30/31 Resilient Seated Butterfly Valve stem is retained in the body by a stainless steel retaining ring, a brass thrust washer and two C-rings. The stem retaining assembly prevents unintentional removal of the stem during field service.


  • Size Range: 2″ – 20″ (50mm – 500mm), 14″-20″ (350mm-500mm)
  • Body Style: Wafer, Lug
  • Temperature Range: -20°F to 400°F (-29°C to 204°C)
  • Pressure Ratings: 175 psi (12 Bar), 150 psi (10 bar)Body (CWP): 250 psi (17.2 Bar)
  • Shutoff Rating: Bidirectional Bubble-tight
  • Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Aluminum
  • Disc Materials: Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel, Hastelloy®*Halar®*Coated Ductile Iron
  • Stem Materials: Stainless Steel, Monel K500
  • Seat Materials: BUNA-N, EPDM, FKM*, Polyurethane
  • Applications: Potable Water, Wastewater, Seawater, HVAC
  • Design Standard: MSS SP-67,API 609, Category A
  • Flange Drilling: ASME B16.1 Class 125, ASME B16.5 Class 150, EN 1092 PN10, PN16
  • Testing Standard: MSS SP-61, API 598, EN 12266-1
  • Certifications: ABS, Bureau Veritas, CE/PED, CRN, DNV, FDA 21 CFR 177.1550, NSF 372, NSF-61
  • Face to Face: MSS SP-67, API 609, Category A, EN 558

Learn more about butterfly valves that BBP offers.

Additional information


Chemical, Engineering, Food & Beverage, Oil & Gas, Pharmaceutical, Power Generation, Pulp & Paper, Refining, Water & Wastewater


Bray International