Schubert & Salzer – Type 4080 Three-Way Ball Sector

Overview

The Schubert & Salzer Type 4080 is a three-way ball sector valve designed for diverting or mixing service across a broad range of process control applications. Available in DN 50 through DN 150 (2″ to 6″), it delivers high-precision flow control with an almost equal percentage characteristic and an exceptional rangeability of 300:1.

The Type 4080 is constructed from stainless steel body materials (CF8M / 316L) and is compatible with neutral and aggressive fluids, suspensions, and gases. It accepts pneumatic quarter-turn actuators per DIN/ISO 5211, and is available with the integrated digital positioner Type 8049 — including Ex-Pro explosion-proof and IO-Link variants.

Features & Benefits

• 300:1 rangeability — provides precise modulation across a wide control range, reducing the need for multiple valve sizes
• High Kvs values — DN 50 through DN 150 flow coefficients ranging from 61 to 382 m³/h, enabling high-flow applications with minimal pressure drop
• Almost equal percentage flow characteristic — stable, predictable control response across the full stroke
• Diverting or mixing function — single valve handles both flow configurations, simplifying system design
• Stainless steel construction (CF8M body / 316L trim) — corrosion-resistant for use with neutral and aggressive media
• Leakage rate < 0.00005% of Kvs (IEC 60534-4 IV-S1) — tight shutoff with PTFE or PEEK seat rings
• DIN/ISO 5211 actuator interface — compatible with a wide range of pneumatic quarter-turn actuators, single or double acting
• Multiple installation positions (8 coded positions) — flexible orientation for plant layout requirements
• Integrated positioner option — digital positioner Type 8049 available with 2-wire, 4-wire, Ex-Pro, IO-Link, or integrated process controller (IPC)
• Vacuum-rated to 50 mbar absolute — suitable for vacuum service applications
• Simple maintenance design — straightforward access to internals reduces downtime

Technical Specifications

• Nominal sizes: DN 50 to DN 150 (2″ to 6″)
• Nominal pressure: PN 40 (DN 50); PN 25 (DN 65–DN 150)
• Maximum differential pressure (PTFE seat, up to 80°C): 25 bar (DN 50); 16 bar (DN 65–DN 150)
• Maximum differential pressure (PEEK seat, up to 80°C): 40 bar (DN 50); 25 bar (DN 65–DN 150)
• Fluid temperature: -40°C to +220°C (-40°F to +428°F), depending on sealing selection
• Ambient temperature: -20°C to +80°C (special versions available on request)
• Body material: 1.4408 (CF8M cast); 1.4404 (316L machined parts)
• Shaft material: 1.4122 stainless steel
• Seat ring options: PTFE or PEEK
• O-ring materials: Viton, NBR, EPDM, or FFKM
• Flow characteristic: Almost equal percentage
• Rangeability: 300:1
• Leakage rate: < 0.00005% of Kvs (IEC 60534-4 IV-S1)
• Kvs values: DN 50 = 61 m³/h; DN 65 = 106 m³/h; DN 80 = 139 m³/h; DN 100 = 202 m³/h; DN 125 = 296 m³/h; DN 150 = 382 m³/h
• Connection: Flanges per DIN EN 1092-1; face-to-face per DIN EN 558-1 Series 1
• Actuator interface: DIN/ISO 5211 mounting kit; pilot pressure 5–6 bar
• Rotation angle: 90°
• Vacuum service: To 50 mbar absolute

Applications

• Process fluid diverting and mixing in chemical and petrochemical plants
• Temperature control via hot/cold fluid blending in HVAC and industrial heating systems
• Flow distribution in water treatment and industrial water systems
• Aggressive and corrosive media handling requiring stainless steel wetted parts
• Food and beverage processing where hygienic-grade stainless steel materials are required
• Pharmaceutical and cosmetics manufacturing with strict material compatibility requirements
• Energy and power generation systems requiring reliable three-way modulating control
• Pulp and paper processing with suspension and slurry media
• Vacuum service applications to 50 mbar absolute
• Hazardous area installations using Ex-Pro explosion-proof positioner variant

Type 4080 Accessories

• Digital Positioner Type 8049 – Integrated digital positioner available in 2-wire, 4-wire, Ex-Pro explosion-proof, IO-Link, and integrated process controller (IPC) configurations; mounting per VDI/VDE standard
• Pneumatic Quarter-Turn Actuators – Single-acting or double-acting actuators with DIN/ISO 5211 mounting kits in Series 1 or Series 2
• Handwheel Drive – Manual operation handwheel available for all DN sizes
• Spindle Extension – Extension for improved insulation clearance, available for all DN sizes
• Limit Switch – End-position feedback switch for open/closed indication
• Position Feedback Transmitter – Continuous position feedback for control system integration
• Filter Pressure Regulator – Air supply conditioning for pneumatic actuator systems
• Pilot Valve (Solenoid) – On/off control of pneumatic actuator supply

Documentation