Blakeborough Cage & Top Guided Valves - 17 Pages

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Blakeborough Cage & Top Guided Valves

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Blakeborough Cage & Top Guided Valves

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Cage & Top Guided Valves BV520 Single Seat Control Valve A proven track record We have extensive references and a proven track record in the supply of valves across a number of key industries. Our valves are industry renowned brands, each with an established reputation for quality engineering and reliability. Valve testing All pressure containing items are hydrostatically tested, seat leakage tested and functionally tested. We can also perform gas, packing emission, cryogenic and advanced functional testing, as well as seismic testing for nuclear applications. Material testing ■...

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BV520 Single Seat Control Valve BV520 Single Seat Control Valve Description The Weir BV520 series valves are a top guided unbalanced design and with single-ported design configuration. The flow characteristic of trims can be selected as linear, equal percentage or quick open. The simple construction and flexible trims selection of Series BV520 can reduce the maintenance costs and make it easy to change the trims. The valves are suited to a wide range of general process applications, such as water, steam, oil, gases and the majority of chemical services. Main Design Code/Standard ■ ASME FCI...

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BV520 Single Seat Control Valve Process Control Valves TABLE 3- Valve Weight (Kg) BV502 & BV503 Process Control Valves Design features ■ Top cage guided ■ Wide range of trim options ■ High stability ■ Easy maintenance Pressure rating ■ Class 150 to 4500 Equivalent metric ratings Sizes ■ 15mm to 25mm (1/2" to 1") Travels ■ 10mm to 25mm (3/8" to 1") Engineered valves for protection & process control

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BV502 & BV503 Process Control Valves Trim design This versatile range of globe and angle valves available in sizes 15mm to 25mm (1⁄2” to 1”) offer a wide variety of trim selections to suit all flow conditions in a non-balanced construction. The body design can be supplied in cast or forged materials. BV502 & BV503 Process Control Valves Contour The contour trim is suitable for most flow applications and is provided as standard in most valves. The valve characteristic is determined by the contour of the plug head. The contour trim is available in eight trim sizes with equal percentage,...

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BV502 & BV503 Process Control Valves BV502 & BV503 Process Control Valves Valve selection guideline Valve flow co-efficient All valves are sized using the valve flow co-efficient, Cv, in accordance with ISA 75.01.01 as detailed in the Weir sizing and selection manual. Design Cv values are given in table 5. Body Selection The valve body size and style is selected on the basis of supporting the selected trim design and design Cv. In addition consideration is made of the velocity and the required pressure drop application. Liquid velocities are limited mainly due to erosion considerations,...

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BV502 & BV503 Process Control Valves BV500/1 & BV990/2 Process Control Valves L Design features ■■ Cage guided ■■ Wide range of trim options High stability Easy maintenance Pressure rating ■■ Class 150 to 4500 Cast bodies Nominal valve size mm in Butt weld up to ASME 600 (PN 250) Butt weld ASME 900 & 1500 (PN 160 & 250) Note: Flange valves are generally in accordance with ISA 75.08.06 and ISA 75.08.01 TABLE 8 – Valve dimensions Forged bodies Nominal valve size mm in Butt weld ASME 4500 Butt weld up to ASME 2500 (PN 420)

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BV500/1 & BV990/2 Process Control Valves BV500/1 & BV990/2 Process Control Valves The Weir cage trim series of control valves BV500/1 and BV990/2, are designed to meet the requirements of most process control applications. Weir Cage Trim Valves offer a wide choice of options to meet most system requirements, eliminating or greatly reducing the multiplicity of valve designs that would otherwise be required. This range of control valves has been developed by Weir to meet the ever increasing demands of modern day processing plant. This flexible range of valves offers an extensive selection of...

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BV500/1 & BV990/2 Process Control Valves This form of trim design is fitted as standard and is suitable for most flow control applications. In this design the flow is broken up into multiple jets by a number of radial holes in the cage. The flow is conventionally from outside to inside the trim so that jet impingement/high turbulence levels are controlled within the confines of the valve cage. Impingement of the jets within the valve cage produces a more stable downstream flow, reduces the effect of large scale separation and produces a smaller scale turbulence structure in the valve...

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BV500/1 & BV990/2 Process Control Valves BV500/1 & BV990/2 Process Control Valves TABLE 1 - Materials of construction Note: Control at openings of less than 5% is not recommended for prolonged periods 18 Engineered valves for protection & process control Weir Control & Choke valves Engineered valves for protection & process control 19

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BV500/1 & BV990/2 Process Control Valves BV500/1 & BV990/2 Process Control Valves TABLE 6 - BV500 Globe valves & BV501 Angle valves with Cascade trims - Liquid flow over 20 Engineered valves for protection & process control WWW.global.Weir www.global.weir Weir Control & Choke valves Engineered valves for protection & process control 21

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BV500/1 & BV990/2 Process Control Valves TABLE 8 - BV990 multi-flow trim design Cv 22 Engineered valves for protection & process control Weir Control & Choke valves Engineered valves for protection & process control

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BV500/1 & BV990/2 Process Control Valves BV500/1 & BV990/2 Process Control Valves TABLE 13 – BV990 series valves dimensions M Ratings up to & including ASME Class 1500 Valve Size TABLE 12 – BV500/1 series valves dimensions Valve size Standard Bonnet Standard Travels Class 300 Butt Weld BS, PN64, PN100, ASME 600 Class RF Flanged & Butt Weld ASME 600 Class RTJ Note: Flange valves are generally in accordance with ISA 75.08.06 and ISA 75.08.01. CF = Consult Factory. Engineered valves for protection & process control Refer to trim selection Refer to trim selection Normalising Bonnet

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