30-31 Resilient Seat Butterfly Valve

30-31 Resilient Seat Butterfly Valve

Manufacturer

Bray

The Bray Series 30 Wafer and Series 31 Lug style resilient seated butterfly valves feature a one-piece body with a high-strength through stem design utilizing an internal disc to stem connection.The Series 30/31 is engineered to provide bidirectional bubble-tight shutoff and isolation of the line media from the stem or valve body.

Available with a wide selection of high-quality resilient seat & disc materials for a variety of applications, our Series 30/31 butterfly valves are easily automated for on-off or modulating service. “

ADDITIONAL INFORMATION

The Bray Series 30 Wafer and Series 31 Lug style resilient seated butterfly valves feature a one-piece body with a high-strength through stem design utilizing an internal disc to stem connection.

The Series 30/31 is engineered to provide bidirectional bubble-tight shutoff and isolation of the line media from the stem or valve body.

Available with a wide selection of high-quality resilient seat & disc materials for a variety of applications, our Series 30/31 butterfly valves are easily automated for on-off or modulating service.

  • Potable Water

  • Wastewater

  • Seawater

  • HVAC

Size Range
NPS 2 to 20 / DN 50 to 500
NPS 14 to 20 / DN 350 to 500

Body Materials
Cast Iron, Ductile Iron, Carbon Steel, Aluminum

Temperature Range
-20°F to 400°F (-29°C to 204°C)

Stem Materials
Stainless Steel, Monel K500

Maximum Allowable Operating Pressure
175 psi (12 Bar)
150 psi (10 Bar)

Seat Materials
BUNA-N, EPDM, FKM, Polyurethane

Shutoff Rating
Bidirectional Bubble-tight

Disc Materials
Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel, Hastelloy®, Halar® Coated Ductile Iron

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 PN 10, 16

Testing Standard
MSS SP-61, API 598, EN 12266-1

Certifications
ABS, ATEX, Bureau Veritas, CRN, DNV, FDA 21 CFR 177.1550, NSF 61/372, PED, PE(S)R

Face to Face
MSS SP-67, API 609, Category A, EN 558

Applications
Potable Water, Wastewater, Seawater, HVAC