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DQSV Single-Seat Control Valve
DQSV · Flow control

Single-Seat Control Valve

A single-seat control valve with pneumatic actuation options for process regulation. Define flow conditions, pressure differential and shutoff requirements before selecting the trim and actuator.

SIZE RANGEDN15 ~ DN200
PRESSURE RATINGPN16 ~ PN40 / Class150 ~ Class300
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Single-Seat Control Valve specifications
Size RangeDN15 ~ DN200
Pressure RatingPN16 ~ PN40 / Class150 ~ Class300
Temperature Range-196°C ~ 450°C(depending on trim and packing)
Body MaterialWCB / CF8 / CF8M / CF3M / LCB / WC6 / C276 etc.
Trim Material304 / 316 / 316L / alloy etc.(depending on medium)
Connectionflanged / welded / threaded
Flow Characteristicequal percentage / linear / quick opening
Leakage ClassANSI Class VI
Actuatorpneumatic diaphragm type / pneumatic piston type

Body and trim

Single-Seat Control Valve — Single-seat construction · For most clean media or media with a low particle content.
Single-seat construction · For most clean media or media with a low particle content.
Single-Seat Control Valve — Soft-seated trim · Low leakage for duties requiring tight shutoff.
Soft-seated trim · Low leakage for duties requiring tight shutoff.

Actuation

Single-Seat Control Valve — Pneumatic diaphragm actuator (standard)
Pneumatic diaphragm actuator (standard)
Single-Seat Control Valve — Pneumatic piston actuator (high differential pressure)
Pneumatic piston actuator (high differential pressure)

Product features

  • Precise regulation

    Stable sealing for frequent cycling or continuous regulation.

  • Stable response

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

  • Reliable sealing

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

  • Optimized construction

    Compact construction supports site installation and subsequent maintenance.

  • Application flexibility

    Stable sealing for frequent cycling or continuous regulation.

  • Accessible maintenance

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

Construction features

Precise regulation
Modular body, bonnet and sealing assemblies support maintenance and spare part replacement.
Stable response
Wetted parts can be selected for the medium, including stainless steel, alloy steel, fluoropolymer or rubber linings, and hard alloys.
Reliable sealing
Actuation configurations include manual, electric, pneumatic, diaphragm and self-operated options, subject to the selected valve configuration.
Optimized construction
Modular body, bonnet and sealing assemblies support maintenance and spare part replacement.
Application flexibility
Wetted parts can be selected for the medium, including stainless steel, alloy steel, fluoropolymer or rubber linings, and hard alloys.
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