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DQSV Butterfly Valve
DQSV · Shutoff & isolation

Butterfly Valve

A butterfly valve for water and other specified industrial media. Select disc, sealing and actuation options around the required connection, temperature and operating pressure.

SIZE RANGEDN50 ~ DN2000
PRESSURE RATINGPN10 / PN16 / PN25 / PN40 / 150LB
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Confirm the selected configuration and operating limits with DQSV before ordering.

Butterfly Valve specifications
Nominal DiameterDN50 ~ DN2000
Nominal PressurePN10 / PN16 / PN25 / PN40 / 150LB
Working Temperature-20°C ~ 200°C(higher temperature customizable)
Body Materialductile iron / carbon steel / stainless steel / alloy steel etc.
Disc Materialstainless steel / carbon steel / ductile iron etc.
Sealing MaterialEPDM / NBR / PTFE / metal hard seal etc.
Connectionwafer type / flanged / lug type
Applicable Mediumwater, air, steam, oil products, acids and alkalis etc.
Actuationmanual / electric / pneumatic / worm gear etc.

Body and construction

Butterfly Valve — Double or triple offset disc · Offset geometry reduces sealing surface friction for easier operation.
Double or triple offset disc · Offset geometry reduces sealing surface friction for easier operation.
Butterfly Valve — Soft or metal seats · EPDM, NBR, PTFE or metal seat options suit different media and temperatures.
Soft or metal seats · EPDM, NBR, PTFE or metal seat options suit different media and temperatures.

Drive options

Butterfly Valve — Manual or worm gear drive (standard)
Manual or worm gear drive (standard)
Butterfly Valve — Pneumatic actuator (rapid cycling)
Pneumatic actuator (rapid cycling)
Butterfly Valve — Electric actuator (remote control)
Electric actuator (remote control)

Product features

  • Compact construction

    Stable sealing for frequent cycling or continuous regulation.

  • Low-effort operation

    Critical areas can receive treatments for wear, corrosion and high temperature service.

  • Large-bore service

    Selection calculations and custom configurations are available for the specified operating conditions.

  • Reliable sealing

    Compact construction supports site installation and subsequent maintenance.

  • Convenient installation

    Stable sealing for frequent cycling or continuous regulation.

  • Accessible maintenance

    Critical areas can receive treatments for wear, corrosion and high temperature service.

Construction features

Compact construction
Modular body, bonnet and sealing assemblies support maintenance and spare part replacement.
Low-effort operation
Wetted parts can be selected for the medium, including stainless steel, alloy steel, fluoropolymer or rubber linings, and hard alloys.
Large-bore service
Actuation configurations include manual, electric, pneumatic, diaphragm and self-operated options, subject to the selected valve configuration.
Reliable sealing
Modular body, bonnet and sealing assemblies support maintenance and spare part replacement.
Convenient installation
Wetted parts can be selected for the medium, including stainless steel, alloy steel, fluoropolymer or rubber linings, and hard alloys.
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