Schubert & Salzer – 4083 3-Way Ball Sector Valve Elect. Actuator

Overview

The Schubert & Salzer Type 4083 is a three-way ball sector valve with integrated electric actuator, available in diverting or mixing function configurations. Designed for precise modulating control of neutral and aggressive media — including fluids, suspensions, and gases — the Type 4083 delivers a high rangeability of 100:1 and exceptionally high Kvs values across all flow directions.

Available in nominal sizes DN 50 through DN 150 (2″ through 6″), the Type 4083 features a stainless steel body construction and is compatible with a range of sealing materials to suit varying temperature and chemical requirements. The electric actuator supports both on/off and modulating control operation with multiple signal input options.

Features & Benefits

• High rangeability of 100:1 — delivers precise modulating control across a wide flow range
• Available in diverting or mixing function — configurable for split or combining flow applications
• High Kvs values in all flow directions — minimizes pressure drop and maximizes flow efficiency
• Near equal-percentage flow characteristic — provides stable, predictable control response
• Stainless steel body construction (CF8M / 316L) — compatible with neutral and aggressive process media
• Multiple sealing material options (PTFE, PEEK with Viton, NBR, EPDM, or FFKM O-rings) — covers media temperatures from -40°F to 428°F
• IP67-rated electric actuator — protected against dust ingress and water immersion
• Multiple actuator input signals supported (0–10V, 1–10V, 0–20mA, 4–20mA, or 3-point) — compatible with most control systems
• Optional fail-safe (spring-return) positions (NC or NO) — moves to a defined position on power loss
• Optional ATEX non-electrical Ex approval — suitable for use in hazardous areas
• DIN/ISO 5211 actuator mounting interface — enables actuator retrofit or replacement without valve removal
• Variable actuator installation positions — accommodates tight or constrained installation orientations
• Easy maintenance design — reduces downtime during service intervals

Technical Specifications

• Nominal sizes: DN 50 – DN 150 (2″ – 6″)
• Connection: Flanges per DIN EN 1092-1; face-to-face per DIN EN 558-1 Series 1
• Body material: 1.4408 (CF8M) cast parts; 1.4404 (316L) turned parts
• Bearing shaft material: 1.4122 stainless steel with high-temperature plain bearings
• Nominal pressure: PN 40 (DN 50); PN 25 (DN 65–DN 150)
• Maximum allowable pressure: 580 psi (DN 50 / 2″); 363 psi (DN 150 / 6″)
• Fluid temperature: -40°C to +220°C (-40°F to +428°F), depending on sealing selection
• Ambient temperature (valve): -20°C to +80°C; special versions available on request
• Vacuum capability: up to 50 mbar absolute
• Flow characteristic: near equal-percentage
• Rangeability: 100:1
• Leakage rate (seat ring PTFE/PEEK, ball sector polished stainless steel): < 0.00005% of Kvs; IEC 60534-4 Class 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
• Actuator power supply: 24–240V DC/AC (50/60 Hz)
• Actuator protection class: IP67
• Actuator ambient temperature: -20°C to +70°C
• Actuator duty cycle: 75%
• Actuator body material: Polyamide (PA6)
• Limit switch: SPST NO — 5A 125V AC / 3A 250V AC
• Control signal options: 0–10V, 1–10V, 0–20mA, 4–20mA, or 3-point
• Optional actuator features: fail-safe (NC/NO), Bluetooth module, Modbus connectivity, potentiometer (1kΩ / 5kΩ / 10kΩ)
• Actuator mounting interface: DIN/ISO 5211
• Approvals: EC Declaration of Conformity; UKCA Declaration of Conformity; optional ATEX non-electrical (II 2G Ex h IIC T6…T2 X Gb; II 2D Ex h IIIC 85°C…220°C X Db)

Applications

• Modulating flow control of liquids, suspensions, and gases in industrial process systems
• Three-way diverting or mixing service in heating, cooling, and fluid conditioning loops
• Chemical processing — compatible with aggressive media via selection of appropriate sealing materials
• Food & beverage processing — stainless steel construction suitable for hygienic environments
• Pharmaceutical & cosmetics manufacturing
• Water and wastewater treatment systems
• Textile and pulp & paper processing
• Energy systems including heating and cooling distribution
• Hazardous area installations (with optional ATEX non-electrical approval)

Type 4083 Accessories

• Fail-Safe Actuator (NC/NO) – Spring-return option moves valve to a defined safe position upon power failure
• Bluetooth Module – Enables wireless control and status readout via Bluetooth-enabled devices
• Modbus Interface – Connects valve actuator to bus systems for remote control and operational status monitoring
• Potentiometer (1kΩ, 5kΩ, 10kΩ) – Position feedback potentiometer options for actuator position indication
• Limit Switch – SPST NO contact for end-position indication (included as standard)
• ISO 5211 Mounting Kits – Retrofit actuator mounting kits available for Series 1 and Series 2 configurations across DN 50–DN 150

Documentation