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Series 30/31 Resilient Seated Butterfly Valves

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The Series 30/31 is built to meet the stringent requirements for many of today’s applications. Availiable in wafer or lug style body with unique features that results in longer service life, easy parts replacement, and interchangability of components. The unique Double-D Disc/Stem connection eliminates exposure of the stem and stem retention componets to the line media. The unique tougue-in-groove seat design provides for easy replacement and are self-sealing between flanges.

Specifications:

• Size Range: 2" - 20" (50mm - 500mm)
• Body Style: Wafer, Lug
• Temperature Range: -20°F to 400°F (-29°C to 204°C)
• Pressure Ratings: Bidirectional Bubble-tight Shut-Off: to 175 psi (12 Bar)
• Body (CWP): 250 psi (17.2 Bar)
• 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






 DOWNLOADS 

Series 30/31 Butterfly Valve Reference Sheet
(PDF, 448KB)

Bray Butterfly Valves Catalog
(PDF, 4317KB)

Series 30 & 31 Recommended Specifications
(PDF, 78KB)

Resilient Seated Butterfly Valves Technical Manual
(PDF, 2357KB)

Bray Full Line Overview
(PDF, 2496KB)



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  Results 1 - 29 of 29 1 

Item #

Item Name

Dimension A

No. of Holes

300200-11010119 Series 30 Wafer Body Valves Full Cut (2" Butterfly Valve) 3.69 4
300250-11010119 Series 30 Wafer Body Valves Full Cut (2 1/2" Butterfly Valve) 4.19 4
300300-11010119 Series 30 Wafer Body Valves Full Cut (3" Butterfly Valve) 4.88 4
300400-11010119 Series 30 Wafer Body Valves Full Cut (4" Butterfly Valve) 6.06 4
300400-11011119 Series 30 Wafer Body Valves Under Cut (4" Butterfly Valve) 6.06 4
300500-11010119 Series 30 Wafer Body Valves Full Cut (5" Butterfly Valve) 7.06 4
300500-11011119 Series 30 Wafer Body Valves Under Cut (5" Butterfly Valve) 7.06 4
300600-11011119 Series 30 Wafer Body Valves Under Cut (6" Butterfly Valve) 8.12 4
300600-11010119 Series 30 Wafer Body Valves Full Cut (6" Butterfly Valve) 8.12 4
300800-11011119 Series 30 Wafer Body Valves Under Cut (8" Butterfly Valve) 10.50 4
301000-11011119 Series 30 Wafer Body Valves Under Cut (10" Butterfly Valve) 12.75 4
301200-11011119 Series 30 Wafer Body Valves Under Cut (12" Butterfly Valve) 14.88 4
14" Butterfly Valve Series 30 Wafer Body Valves Under Cut 17.05 4
16" Butterfly Valve Series 30 Wafer Body Valves Under Cut 19.21 4
18" Butterfly Valve Series 30 Wafer Body Valves Under Cut 21.12 4
20" Butterfly Valve Series 30 Wafer Body Valves Under Cut 23.25 4
2" Butterfly Valve Series 31 Lug Body Valves Full Cut 3.69 4
2 1/2" Butterfly Valve Series 31 Lug Body Valves Full Cut 4.19 4
3" Butterfly Valve Series 31 Lug Body Valves Full Cut 4.88 4
4" Butterfly Valve Series 31 Lug Body Valves Full Cut 6.06 8
5" Butterfly Valve Series 31 Lug Body Valves Full Cut 7.06 8
6" Butterfly Valve Series 31 Lug Body Valves Under Cut 8.12 8
8" Butterfly Valve Series 31 Lug Body Valves Under Cut 10.50 8
10" Butterfly Valve Series 31 Lug Body Valves Under Cut 12.75 12
12" Butterfly Valve Series 31 Lug Body Valves Under Cut 14.88 12
14" Butterfly Valve Series 31 Lug Body Valves Under Cut 17.05 12
16" Butterfly Valve Series 31 Lug Body Valves Under Cut 19.21 16
18" Butterfly Valve Series 31 Lug Body Valves Under Cut 21.12 16
20" Butterfly Valve Series 31 Lug Body Valves Under Cut 23.25 20
  Results 1 - 29 of 29 1