36H Series Resilient Seated Valve
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Resilient Seated Butterfly Valve Series 36H

Bray 36H series large diameter double flanged resilient seated butterfly valves are designed for dead-end service, drilled and mounted to ASME 125/150 and PN16 flange standards, suitable for high pressure applications.

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Product Overview

Dead-end service and bidirectional shut-off

High Pressure Resilient Seated Butterfly Valve for Optimized Performance

Bray Controls is proud to offer a range of quality high pressure manual butterfly valves that meet the demands of today’s process industries. The 36H series large diameter double flanged resilient seated butterfly valves are designed for dead-end service and are drilled and mounted to ASME 125/150 and PN16 flange standards.

Technical Specifications

ItemParameter
Size RangeNPS 24 to 60 / DN 600 to 1500
Body MaterialDuctile Iron
Temperature Range-20°F to 250°F (-29°C to 121°C)
Maximum Allowable Operating Pressure232 psi (16 bar)
Dead-End Service: 150 psi (10 bar)
Stem Material17-4 PH Stainless Steel
Seat ClassBidirectional Bubble-tight
Disc MaterialNylon 11 Coated Ductile Iron, 316 Stainless Steel
Body TypeFull Flanged
Flange DrillingASME B16.1 Class 125, ASME B16.5 Class 150, ASME B16.47
Testing StandardMSS SP-61, API 598, EN 12266-1
CertificationATEX, NSF 61/372, PED, PE(S)R, SIL
Face-to-FaceAPI 609 Category A, EN 558 20 Series
Seat MaterialBonded EPDM, Bonded BUNA-N
ApplicationHigh Pressure, HVAC, Dead-End Service

FAQ

What pipe sizes, pressures, and temperature conditions is the Bray 36H series resilient seated butterfly valve suitable for?

The 36H series is suitable for large-diameter pipelines from NPS 24 to 60 (DN 600 to 1500). The maximum allowable operating pressure is 232 psi (16 bar), or 150 psi (10 bar) for dead-end service. The operating temperature range is -29°C to 121°C. Specific selection should be confirmed based on actual media, pressure, temperature, and installation conditions.

Can the 36H series achieve reliable sealing under bidirectional flow conditions?

Yes. The 36H series has bidirectional bubble-tight sealing capability and can be used for both one-way service and bidirectional shut-off. Seat options include bonded EPDM or bonded BUNA-N. The actual seat selection should be confirmed based on media characteristics and application conditions.

How to match flange connection standards when selecting the 36H series for large-diameter pipelines?

The 36H series features a full-flanged body, with flange drilling compatible with ASME B16.1 Class 125, ASME B16.5 Class 150, and ASME B16.47 standards. It is drilled and installed according to ASME 125/150 and PN16 flange standards. Before procurement, verify the pipeline flange standard, size, and site connection conditions.

What are the main structural materials of the 36H series butterfly valve?

This series features a ductile iron body, 17-4 PH stainless steel stem, and a disc available in nylon 11 coated ductile iron or 316 stainless steel. Different disc and seat configurations should be confirmed based on the actual model and application conditions.

What industry applications is the 36H series suitable for, and what standards can be referenced for installation acceptance?

The 36H series is designed for high-pressure, HVAC, and dead-end service applications. Product testing conforms to MSS SP-61, API 598, and EN 12266-1. Face-to-face dimensions conform to API 609 Category A and EN 558 Series 20. Installation should confirm flange standards, pressure class, and dead-end service pressure limits.

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