Categories

Valmet’s control valve family includes:

Rotary valves

• Butterfly valves (concentric, double-/triple eccentric)
• Segment (V port) valves
• Eccentric rotary plug valves
• PV/ PVE PinchValve

Linear valves

• Globe valves (single-seated sliding stem)

Key Features of Valmet Control Valves

Valmet control valves deliver:

• Wide operating ranges: pressure up to several hundred bar, temperatures from cryogenic to high heat steam
• CV-rated and proprietary flow trims for optimized flow characteristics
• Leakage and tight shutoff meeting high industry classes (e.g., API/FCI, ISO Rate IV–VI)
• Standards compliance: ISO, ASME, ATEX, SIL 3 certified
• Actuation solutions: pneumatic, electropneumatic, digital positioners for automated precision
• Durability: metal/soft seats, coatings for erosion/corrosion resistance; maintenance access (e.g., top-entry bonnet)

Key Features by Category

Butterfly Valves

Neles™ butterfly valves are engineered to enhance process efficiency by delivering high valve capacity and reliable long-term performance. Recognized for their tight shut-off capabilities and certified to SIL 3 standards, these valves are known for their operational reliability. The product lineup includes metal-seated, soft-seated, and rubber-lined variants to suit a wide range of industrial applications. Variation includes:

• Next generation butterfly valves
• Neles™ butterfly valves
• Jamesbury™ butterfly valves
• Neles Easyflow™ butterfly valves

Technical Parameters:

• Operating pressure: Up to ~68.9 bar (1000 psi differential)
• Temperature range: Soft/metal seats handle −40 °C to +200 °C+
• Flow rate/Cv: Very high; full-bore designs minimize ΔP losses; Cv tables available
• Line size & connections: DN 50–600+, wafer, lugged, double-flanged
• Leakage class: SIL 3 capable; metal, rubber seats ensure tight shutoff
• Standards: ASME, PSA/BS, ATEX certified
• Maintenance: Quick disc/seat exchange; long-life bearings and seals

Segment (V port) Valves

Neles™ segment valves are cost-effective, high-performance control solutions suited for regulating liquids, gases, vapors, and slurries—particularly in applications demanding high capacity and wide rangeability. The R-series features lightweight, low-torque valves, available in sizes ranging from compact 1-inch models to large 32-inch configurations, offering flexibility across various industrial uses. Variations include:

• Neles™ V-port segment valve for control applications, R-series
• Neles™ R-series segmented ball valve for on-off applications
• Neles™ MC V-port segment valves, series R2
• NelesAce™ basis weight control valve

Technical Parameters:

• Pressure: Typically Class 150–300 ratings; body tested to 1.5× and seat to 3.5 bar g
• Temperature: Handles liquids, gases, slurries at moderate to high temperatures
• Flow/Cv: Medium–high; V-port provides linear/characterized flow
• Size: DN 25–800; flange connections
• Leakage: Generally FCI Class IV (control valves)
• Standards: Meets IEC 60534, ANSI/FCI
• Maintenance: Simple design, easily replaceable segments

Eccentric Rotary Plug Valves

The Neles™ Finetrol™ eccentric rotary plug valve is engineered for precise control of liquids, gases, vapors, and slurries in both standard and demanding process conditions. Certified to SIL 3, it delivers excellent control accuracy and is well-suited for handling impure or challenging fluids, making it a reliable choice for applications in the refining and petrochemical industries.

Technical Parameters:

• Pressure: High differential capability; suitable for abrasive/slurry services
• Temperature: Broad—cryogenic to high-temp (-200 °C … +450 °C / -328 … +842 °F), depending on materials
• Flow/Cv: Excellent throttling accuracy; Cv curves supported
• Size: DN 25–300 flange variants
• Leakage: Tight shutoff with metal or soft seats; low fugitive emissions
• Standards: SIL, ATEX, API as needed
• Maintenance: Rotary design resists wear; replaceable plug and seats

PV/ PVE Pinch Valve

Flowrox PV, PVE, and PVE/S heavy-duty pinch valves are specifically designed for on/off and control applications involving abrasive or corrosive slurries, powders, or granular materials. When fully open, the valve provides an unrestricted full-bore flow path. During closure, two pinch bars compress the sleeve along the centerline, ensuring reliable bubble-tight shut-off—even in cases where solids have accumulated on the sleeve walls.

Series: PV

• Construction: Open body
• Size range: 80–600 mm / 3–24 in
• Pressure range: 0–25 bar / 0–362 psi
• Temperature range: -25 to +50 °C / -32 to +122 °F

Series: PVE

• Construction: Enclosed body
• Size range: 25–1000 mm / 1–40 in
• Pressure range: 0–100 bar / 0–1450 psi
• Temperature range: -25 to +80 °C / -32 to +176 °F

Series: PVE/S

• Construction: Enclosed/Sealed body
• Size range: 25–800 mm / 1–32 in
• Pressure range: 0–100 bar / 0–1450 psi
• Temperature range: -25 to +80 °C / -32 to +176 °F

Globe Valves

Valmet offers a wide range of Globe Valve series:

Neles™ Omega Angle Valve, Series AM

Neles series AM globe valves provide superior control performance and high reliability in demanding applications where noise or cavitation need to be eliminated. Standard units are equipped with Neles diaphragm or piston actuators and Neles valve controllers for precise flow control, extended operation life and performance monitoring online.

• Series: AM
• Design: Unbalanced (top-guided) / Balanced (cage-guided)
• Size range: DN 25 – 1200 / 1" – 48"
• Pressure classes: ASME 150 – 2500 / PN10 – 320
• Temperature range: -196 °C to +593 °C
• Tightness: Class IV/V (metal seat), V (soft seat, balanced), VI (soft seat, unbalanced)

Neles™ Top-Guided Angle Valve, Series AU

Neles series AU globe valves provide superior control performance and high reliability in applications with high pressure drop and velocities. Angle valves are commonly used in flashing applications or in piping layouts with limited space. Standard units are equipped with Neles diaphragm actuators and Neles valve controllers for precise flow control, extended operation life, and performance monitoring online.

• Series: AU
• Design: Unbalanced, top-guided
• Size range: DN 15 – 150 / ½" – 6"
• Pressure classes: ASME 150 – 2500 / PN10 – 320
• Temperature range: -200 to +593 °C / -320 to +1053 °F
• Tightness: ANSI/FCI 70-2 Class IV/V (metal seat), Class VI (soft seat)

Neles™ Cage-Guided Angle Valves, Series AB

Neles series AB globe valves provide superior control performance and high reliability in applications with high pressure drop and velocities. Angle valves are commonly used in flashing applications or in piping layouts with limited space.

• Series: AM
• Design: Unbalanced (top-guided) / Balanced (cage-guided)
• Size range: DN 25 – 1200 / 1" – 48"
• Pressure classes: ASME 150 – 2500 / PN10 – 320
• Temperature range: -196 °C to +593 °C
• Tightness: Class IV/V (metal seat), Class V (soft seat, balanced), Class VI (soft seat, unbalanced)

Features of Angle Valves

• One-piece body to minimize leak paths
• Angle body pattern for angle pipeline installations
• Especially suitable for flashing applications — high velocity flow is guided through the valve with minimal contact to body/internals, increasing lifetime
• Top-entry construction and quick-change trim for easy maintenance
• Rugged top-guided trim construction with hardened surfaces for extended lifetime
• Wide variety of trim capacities and characteristics to optimize valve performance
• Multi-hole Tendril™ trim to reduce noise or eliminate cavitation
• Wide material selection available for different applications
• Flanged and welding-end body options
• Low emissions (ISO 15848 compliant), bellows packing available
• NACE material options for corrosive environments
• SIL 3 certified for safety-critical applications
• Special cleaning optional for oxygen, cryogenic, etc. services

Applications

Valmet control valves serve across industries/conditions, including:

• Pulp & Paper: slurry, steam heat control, digester feed
• Oil & Gas/Chemical: feed, process, ESD applications with cavitation/noise control
• Power Generation: boiler feed, bypass, turbine control
• Mining/Metals: abrasive slurries, dust suppression with robust segment/pinch types
• Food/Pharma: sanitary butterfly/globe valves with hygienic design

Why Choose Valmet Control Valves

Bray’s ball valves are engineered to deliver exceptional performance, safety, and reliability across a wide range of industrial applications. Here’s what sets them apart:

• Proven Performance: Bubble-tight shutoff, low torque, and long cycle life
• Versatile Range: Covers concentric, lined, offset, triple-offset, and cryogenic needs
• Actuation-Ready: ISO 5211 pad for seamless integration
• Durable Construction: Anti-blowout stems, modular bodies, exotic materials
• Global Compliance: Designed per MSS, API, ISO, ATEX, DNV standards

Other Important Points

Additional benefits include:

• Advanced sizing/design tools: Nelprof™ offers simulation, SIL, on/off sizing
• Automation synergy: Integrated digital controllers and diagnostics enhance safety and performance
• Environmental performance: Low fugitive emissions, fire safe versions, certified to SIL 3, ATEX
• Modular trims and body materials: Customizable to media, erosion, cavitation resistance

Valmet control valves offer industry’s best-in-class performance, durability, and compliance, making them a dependable choice across demanding sectors. With robust design, advanced control capabilities, and full automation integration, they deliver long-term reliability, operational efficiency, and optimal total cost of ownership.