SERIES 39L Long Body Slurry Control Valve

Product catalog summary

Introduction
The document presents the Ultra High Performance BRAY SERIES 39 butterfly valve, designed for highly erosive slurry control. It is suitable for applications in alumina refining and other erosive environments.

Specifications
The valve is available in sizes ranging from 50nb to 500nb (2” to 20”) and features a wafer and flanged long body design with a single offset disc. It is constructed from advanced wear-resistant materials like sintered silicon carbide ceramic and partially stabilized zirconia ceramic.

Design Features
- Body: Compact wafer style ductile iron body for sizes 50nb to 150nb, and double flanged bodies for sizes 200nb and larger.
- Stem: Made from high strength 17-4 PH stainless steel, allowing interchangeability of Bray actuators.
- Disc: Designed to maximize flow and minimize wear, available in chrome-molly iron or PSZ ceramic.
- Blow Out Proof Stem: Features a retaining ring for full retention of the stem.
- Adjustable Packing: Allows easy access for adjustments without removing the actuator.
- Stem Seal: Provides a positive seal with PTFE packing and carbon fibre anti-extrusion ring.
- Stem Bearings: Upper bearing with 316 stainless steel shell and TFE/glass fibre liner, lower bearing is PSZ ceramic.
- Swing Through Disc: Allows 360-degree rotation without seating off on the liner.
- Ceramic Liner: Made from Sintered Silicon Carbide Ceramic, providing durability and cost-effective maintenance.

Installation and Maintenance
The valve should be installed with the direction arrow in line with the flow direction. Protect flange connection faces from damage during transportation and installation. Follow the installation and maintenance instructions provided, with no special tools required for maintenance.

Materials of Construction
The valve components are made from materials such as ductile iron, stainless steel, chrome-molly iron, PSZ ceramic, and PTFE, ensuring durability and resistance to erosive conditions.

Performance Data
The document includes detailed dimensions, Cv values, and operating torque for various valve sizes, highlighting the valve's capability to handle different slurry conditions.

Catalog excerpts

SERIES 39L Long Body Slurry Control Valve-1

The High Performance Company Presents the Ultra High Performance >

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SERIES 39L Long Body Slurry Control Valve-2

HIGH PERFORMANCE BUTTERFLY VALVE FOR HIGHLY EROSIVE SLURRY CONTROL > BODY: In sizes 50nb to 150nb (2 to 6Ԕ) a compact wafer style ductile iron body enables easy installation. In sizes 200nb (8) and larger double flanged bodies provide a method of installation and alignment more suited to larger, heavier valves. The larger size valves have lifting points provided on the body casting. 316 stainless steel bodies are available in some smaller sizes. The Series 39 valve features blow-out proof stem protection. A retaining ring is installed between the machined stem groove and gland retainer step providing...

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SERIES 39L Long Body Slurry Control Valve-3

SINGLE OFFSET DISC: The single offset disc is the heart of the Series 39 valve. A butterfly valve disc is most prone to wear in the first 25% of opening. The single offset disc design allows the disc to open the leading edge first (left side as pictured below). This in effect causes a larger opening in the foremost position of the valve, in turn allowing the high velocity fluid the most amount of distance to recover whilst still inside the ceramic lined valve. The operating fluid is also effectively deterred from accelerating across the front face of the disc minimizing wear in regions such as...

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SERIES 39L Long Body Slurry Control Valve-4

Size Mtg Details Std Bracket Mass ins mm >

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SERIES 39L Long Body Slurry Control Valve-5

Item Name Material > 1 Body Ductile Iron ASTM A395 > Stainless Steel ASTM A351 CF8M 2 Disc Chrome-Molly Iron (Hardened) > PSZ Ceramic (Partially Stabilized Zirconia) 3 Stem 17-4 PH SS ASTM A564-Type 630 4 Liner S-SiC Ceramic (Sintered Silicon Carbide) 5 Upper Hub PSZ Ceramic (Partially Stabilized Zirconia) 6 Spacer 316 Stainless Steel ASTM A276-Type 316 7 Bearing 316 Stainless Steel with TFE & Glass Fabric Liner 8 Thrust Washer 316 Stainless Steel ASTM A276-Type 316 9 Stem Seal PTFE Rings, plus 1 x Carbon Fibre Top Ring 10 Gland Ring 316 Stainless Steel ASTM A276-Type 316 11 Retaining Ring 18-8...

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