Duplex H-Type Strainers0 pages

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AN SPX BRAND

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Duplex H-Type Strainer

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8" - 36" NB

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Duplex H-TYPE Strainer 8" - 36" (200 mm - 900 mm)

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The Duplex H-Type strainers are designed for larger size applications where interruption of the flow for basket cleaning

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is not permitted. This range of duplex strainers employs a simple method for changeover, using two sliding gate valves,

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operated manually by screwed shafts via an external handwheel. Operating shafts are interconnected for simultaneous

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operation, thus eliminating any possibility of completely shutting off the liquid flow. Provided with a valve position

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indicator showing which chamber of the filter is on stream. Access to the filter baskets is through quick release covers.

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The lightweight baskets are quickly and easily removed for cleaning without the need for any tools, lifting gear or

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specialised knowledge and with minimum down time.

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Standard Features

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> Multiple lightweight baskets for easy handling

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> Sliding gate type valves with positive compression seating

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> Stepped angled basket seat for minimum pressure drop and positive basket seating

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> Robust basket support cages complete with replaceable mesh inserts (when required)

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reducing spares holding and operating costs

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> Quick release covers for convenient basket removal without the need for tools or lifting gear

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> Resilient cover 'O' seals

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> Filtration — 2 mm dia. perforations down to 45 microns (coarser filtration available)

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> External valve position indicator showing which chamber is on stream

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> Replaceable valve seats

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> Synchronised chain drive

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> Standard in cast iron and cast steel, all fitted with baskets and inserts

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as required

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> External pressure equalising valve

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> Flanged to ASME Class 250FF and Class 300RF, can be drilled

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to ASME Class 1 50, BS tables and DIN standards

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Options

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> Internal protective coatings

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> Automatic valve changeover operation

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> Cathodic protection for seawater service

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> Reinforced baskets to withstand high differential pressures

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> Automatic backflushing facilities for both suction and discharge duties

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> Magnetic element assemblies

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> Pleated baskets for higher filtration area

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> DP gauges and switches

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> Flanged vents and drains

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Specials

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> Cast or fabricated units for higher working pressures

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