Bidirectional Knife Gate Valve Series 762 Product Image
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Bidirectional Knife Gate Valve Series 762

Bray Series 762 heavy-duty slurry valve equipped with advanced SlurryShield technology, featuring ductile iron body and full-port design, suitable for heavy-duty slurry handling in mining, power, pulp and paper industries

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Product Overview

Heavy-duty slurry valve for demanding industrial applications with zero-leakage shutoff

Heavy-Duty Slurry Valve with Advanced SlurryShield Technology

The Bray Series 762 heavy-duty slurry valve is equipped with advanced Bray SlurryShield technology, ensuring superior performance and reliability. It effectively prevents media accumulation that could otherwise compromise the reliable isolation function of other knife gates, and provides bidirectional isolation. With its exceptional valve technology, it is the ideal choice for demanding industrial applications. The valve is constructed from durable ductile iron, ensuring outstanding durability and long service life under harsh conditions. The two-piece bolted flanged body design adds structural strength while enabling quick and easy maintenance. The two elastomeric sleeves in the assembly are replaceable components, extending the service life of the body, gate, and bonnet. The full-port design minimizes resistance to pipeline media when the valve is fully open, optimizing fluid flow efficiency. All models come standard with upper and lower stem guards, significantly extending valve life cycle in dusty and contaminating environments. Additionally, the valve offers various drain collection options, including drain plates, drain pans, and drain buckets, providing greater flexibility for fluid handling applications. The Bray Series 762 is versatile and suitable for multiple industries including mining, power, pulp and paper, alumina, chemical, and cement. The valve is meticulously engineered for superior performance, durability, and versatility, excelling in demanding industrial environments. The Bray Series 762 heavy-duty slurry valve has obtained numerous international certifications, including ATEX, CRN, PED, PE(S)R, TR CU, and UA TR, ensuring compliance with industry standards and further enhancing its reliability and performance. These certifications demonstrate the product’s suitability for various demanding industrial applications, making it an ideal choice for fluid handling in industrial environments.

Technical Specifications

ItemParameter
Size RangeNPS 3 to 48 / DN 80 to 1200
Body MaterialDuctile Iron (NPS 3 to 28 / DN 80 to 700)
Carbon Steel and Stainless Steel (NPS 30 to 48 / DN 750 to 1200)
Other materials available upon request
Stem Material304 Stainless Steel
Gate Material304, 316, 317 Stainless Steel, SAF 2507, SAF 2205, 17-4PH, Hastelloy® C, Monel®, Titanium
Seat Material Temperature RangeNatural Rubber: 165°F / 74°C
Buna-N: 194°F / 90°C
EPDM-HT: 302°F / 150°C
Body TypeTwo-Piece Bolted: Flanged
Design StandardManufacturer Standard
Test StandardManufacturer Standard
Flange DrillingASME B16.5 Class 150
ASME B16.47 Class 150
CertificationsATEX, CRN, PED, PE(S)R, TR CU, UA TR
Face-to-Face DimensionIndustry Standard
Actuator OptionsDirect-Mount Handwheel, Bevel Gear Operator, Double-Acting Pneumatic Actuator, Hydraulic Actuator, Electric Actuator
Maximum Allowable Operating PressureNPS 3 to 24: 100psi / DN 80 to 600: 7bar
NPS 26 to 42: 75psi / DN 650 to 1050: 5bar
NPS 48: 50psi / DN 1200: 3bar
Higher pressures available with selected materials
ApplicationsMining: Primary Milling, Secondary Milling, Primary Cyclone, Secondary Cyclone, Flotation Cells, Thickener, Filter Pumps
HPAL/Pressure Oxidation: Autoclave Application Process Pumps

FAQ

How does the Bray Series 762 bidirectional knife gate valve achieve reliable isolation in slurry applications?

The Series 762 uses Bray SlurryShield technology to reduce the impact of media accumulation inside the valve on isolation performance, and provides bidirectional isolation. Its heavy-duty construction, two-piece bolted flanged body, and elastomeric sleeve design make it suitable for handling slurry media in demanding conditions.

What industrial applications and process positions is the Series 762 suitable for?

This series is suitable for mining, power, pulp and paper, alumina, chemical, and cement industries. Mining applications include primary milling, secondary milling, primary cyclone, secondary cyclone, flotation cells, thickeners, and filter pumps. It can also be used for autoclave process pump applications in HPAL or pressure oxidation processes.

How to select the Bray Series 762 valve based on pipe size and pressure?

Size range is NPS 3 to 48, DN 80 to 1200. Maximum allowable working pressure varies by size: NPS 3 to 24 or DN 80 to 600 is 100 psi/7 bar; NPS 26 to 42 or DN 650 to 1050 is 75 psi/5 bar; NPS 48 or DN 1200 is 50 psi/3 bar. Higher pressures may be available with selected materials. Specific configuration should be confirmed based on actual model and application conditions.

What gate, body, and seat material options are available for the Series 762?

Body material is ductile iron for NPS 3 to 28 (DN 80 to 700); carbon steel or stainless steel for NPS 30 to 48 (DN 750 to 1200). Gate options include 304, 316, 317 stainless steel, SAF 2507, SAF 2205, 17-4PH, Hastelloy® C, Monel®, and titanium. Seat materials include natural rubber, Buna-N, and EPDM-HT with temperature ranges of 74°C, 90°C, and 150°C respectively. Specific configuration should be confirmed based on actual model and application conditions.

What maintenance design and actuator options does the Bray Series 762 offer?

The Series 762 features a two-piece bolted flanged body for easy maintenance. The two internal elastomeric sleeves are replaceable components, helping extend the service life of the body, gate, and bonnet. All models come standard with upper and lower stem guards for dusty or contaminating environments. Actuator options include direct-mount handwheel, bevel gear operator, double-acting pneumatic actuator, hydraulic actuator, and electric actuator. Drain plates, drain pans, or drain buckets are also available.

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