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Valtek FlowTop High Performance Control Valve
·Control Valve

Valtek FlowTop High Performance Control Valve

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High-performance, general-service control valve used in many process industries including chemical, refinery, power, food and beverage, HVAC. Available in sizes 1/2" to 16" (DN 15 to 400), ANSI Class 150 (V738) and Class 300 (V740).

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Key Benefits
  • 01Modular design — the same bodies can be used for various bonnet, packing, trim and actuator types, reducing spare parts and offering an interchangeable valve for all applications
  • 02Tight shut-off — Class IV as standard without the need for lapping plug and seat; Class VI available with soft seat design
  • 03Plug head guided — one solid guide stabilises the stem and plug during valve travel, minimising vibration and wear
  • 04Compact — designed and engineered for applications with a limited installation envelope
  • 05Low noise and anti-cavitation trim options: SilentPack, MultiStream, Multi-Hole Plug, RLS, Silencer
  • 06Versatile packing configuration in Teflon and Graphite; live loading kits retrofittable without valve modification
  • 07Fugitive emission packing available per “TA-Luft” up to +450°C operating temperature
  • 08Easy maintenance — seat ring gasket between body and seat allows faster maintenance without remachining; top-entry design allows body to remain in line while trim is changed
  • 09Multifunction yoke accepts NAMUR (IEC 534.6) and direct VDI/VDE 3847/3845 mounting
  • 10High-thrust diaphragm — compact, lightweight, suitable for 6 bar air supply; multiple spring combinations reduce installation size
  • 11Field reversible actuator — failure mode easily reversed using standard equipment
Technical Features
  • 01Sizes 1/2" to 16" (DN 15 to 400), ANSI Class 150 (V738) and Class 300 (V740)
  • 029 body designs: 3-flange, 4-flange, welded, and heating-jacket variants
  • 0311 bonnet designs: standard, bellows seal, high temperature, low temperature, insulating, heavy duty
  • 047 packing designs (Teflon, Graphite, TA-Luft, V-Ring system) with adjustable and spring-loaded configurations
  • 059 standard trim designs + 14 special trim designs, up to 17 Cv values per valve size
  • 06Flow characteristics: modified equal percentage, linear, on/off
  • 07Body materials: A216 WCB, A352 LCB, A217 WC6, A351 CF8M, A351 CF8
  • 08Temperature range: -196°C to +538°C (-321°F to +1000°F) depending on body, bonnet, trim and packing
  • 09Pneumatic FlowAct linear actuator (standard); optional Haselhofer/PSL electric linear actuators, linear thrust units for electric multi-turn actuators, and manual operation
  • 10Reinforced rolling-type diaphragm for uninterrupted linear travel with minimum area variation during stroke
  • 11High-quality powder-painted carbon steel actuator cases — corrosion resistant, durable, chip- and flake-resistant paint
  • 12Solid ductile iron yoke — universal, accepts industry-standard mountings
  • 13Direct air supply through internal yoke passage (no tubing required on air-to-open applications)
  • 14Certifications: EN ISO 9001:2000, PED 97/23/EC Module B+D, ATEX 94/9/EC, TA-Luft ISO 15848-1, SIL IEC 61508, DVGW, RTN GOST-R, DNV Type Approval
Applications
  • Chemical industry
  • Refinery
  • Power generation
  • Food and beverage
  • HVAC
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