SAUTER Building Automation Systems, Valve Actuators, and Control Valves

Factory-direct international export supply of authentic SAUTER building automation stations, motorized actuators, and HVAC valves.

SAUTER modulo 6 Automation Stations and Modular Process Controllers

SAUTER modulo 6 modular automation stations and freely programmable system controllers across EY-mod 680, EY-mod 685, and modu6xx I/O modules form a next-generation hardware platform for mission-critical Building Management Systems (BMS), district energy plants, and cleanroom facilities.

The modular computing core integrates native BACnet/IP profiles (B-BC and B-AWS), onboard HTML5 dynamic web servers, and modern IoT protocols including MQTT, OPC UA, and RESTful APIs.

Designed from the ground up for critical industrial cyber-resilience, modulo 6 controllers satisfy rigorous IEC 62443-4-2 security criteria with onboard hardware TPM 2.0 cryptoprocessors, integrated stateful firewalls, and encrypted BACnet Secure Connect (BACnet/SC) communication.

Robust industrial cybersecurity: hardware-anchored TPM 2.0, internal firewall, and encrypted BACnet/SC communications
Modular modu6xx I/O architecture: hot-swappable analog and digital expansion modules with independent channel isolation
Native IoT and cloud interoperability: standardized MQTT, OPC UA, and REST communication for cloud analytics platforms
Integrated dynamic web visualization: native HTML5 web servers for zero-client local and remote building supervisory control

SAUTER ecos Integrated Room Automation and Environmental Control Units

SAUTER ecos room automation systems across ecos 504 and ecos 505 controller families deliver harmonized, demand-controlled indoor climate regulation encompassing heating, chilled beams, variable air volume (VAV) dampers, DALI-2 architectural lighting, and motorized solar shading.

Combining BACnet/IP, KNX TP, and dual-channel DALI interfaces within a single modular housing, ecos optimizes room performance to European EN 15232 Class A energy efficiency.

Occupant interaction is facilitated via sleek SAUTER ecoUnit355 capacitive touch consoles, EY-RU flush-mounted digital thermostats, and secure Bluetooth Low Energy (BLE) mobile applications allowing personalized comfort adjustments.

Holistic room automation: unified control over multi-pipe fan coils, VAV boxes, DALI-2 lighting networks, and KNX shading
Certified Class A efficiency: fully compliant with top-tier EN 15232 building energy performance requirements
Ergonomic user interfaces: ecoUnit355 capacitive touch panels and EY-RU digital units with active temperature and CO2 displays
Wireless mobile commissioning: quick smartphone room setup and occupant adjustments via Bluetooth Low Energy

SAUTER AVM and AVF Linear Electric Valve Actuators with Safety Function

SAUTER AVM linear electric valve actuators—encompassing high-precision AVM 322, AVM 234S, AVM 124, and fast-acting spring-return AVF 234S safety units—provide micrometer-accurate positioning for globe and mixing valves across district heating substations, air-handling units, and industrial process

skids. Driven by brushless synchronous motor drives with integrated digital microprocessors, AVM actuators support continuous 0–10 V, 4–20 mA, and 3-point floating control. The intelligent automatic stroke adaptation algorithm senses mechanical end stops and seals tight without manual calibration.

During unexpected power outages, the mechanical spring-return mechanism inside AVF series drives the valve plug into the designated fail-safe position within seconds.

Extended thrust performance: broad mechanical actuation spectrum offering rated positioning forces from 250 N up to 2500 N
Continuous electronic positioning: proportional 0–10 V and 4–20 mA input signals with real-time analog stroke position feedback
Certified fail-safe spring action: integrated mechanical return spring inside AVF 234S prevents thermal coil freeze or burnout
Zero-calibration commissioning: automated self-adaptive stroke detection eliminates field mechanical adjustments

SAUTER VUN, VUD, BUG, BUE Control Valves and Valveco PICV Solutions

SAUTER precision globe and mixing control valves—including threaded series VUN, VUD, VUE (brass/ductile iron, DN 15 to DN 50, PN 16) and flanged models BUG, BUE, VUS (grey iron EN-GJL-250 and nodular iron EN-GJS-400-18-LT, DN 15 to DN 150, PN 16/25/40)—are engineered for modulating water, glycol

mixtures, and saturated steam up to +180°C. Optimized equal-percentage and linear plug characteristics provide stable low-flow authority and high Turndown ratios exceeding 50:1.

The portfolio also includes SAUTER Valveco pressure-independent control valves (PICV series VCL and VCM), integrating a dynamic differential pressure regulator, an automatic balancing valve, and a motorized control valve into a single compact valve body.

Comprehensive sizing envelope: nominal diameters from DN 15 through DN 150 rated for pressures up to PN 40
Cavitation-resistant metallurgy: precision-machined stainless steel trim and hardened seats withstand severe throttling
Valveco PICV dynamic balancing: maintains constant design volumetric flow irrespective of line pressure fluctuations
Superior seat tightness: Class IV and IV-S1 shut-off sealing conforming to DIN EN 1349 (leakage rate under 0.01% Kvs)

SAUTER Industrial Temperature, Humidity, and Air Quality Transmitters

SAUTER precision measurement transmitters across EGT, EGH, and EGQ series furnish real-time thermodynamic monitoring across ventilation air ducts, hydronic piping, pharmaceutical cleanrooms, and outdoor building envelopes.

The offering encompasses immersion temperature sensors with stainless steel thermowells, surface clamp-on sensors, and duct probes utilizing Class A Pt100, Pt1000, and Ni1000 elements (DIN EN 60751).

Duct and room relative humidity transmitters leverage capacitive polymer elements engineered to resist condensation and airborne contaminants, while indoor air quality sensors monitor VOC and CO2 concentrations, transmitting active 0–10 V, 4–20 mA, or digital Modbus RTU signals.

High metrological precision: Class A Pt100, Pt1000, and Ni1000 RTD elements delivering exceptional thermal repeatability
Heavy-duty thermowell sleeves: stainless steel immersion sleeves LW 7 and LW 8 rated for high line pressures up to PN 40
Durable capacitive RH sensors: polymer sensing matrices providing long-term calibration stability against condensation
Versatile interface architecture: passive resistance outputs alongside unified active 0–10 V, 4–20 mA, and Modbus options

SAUTER MSX Differential Pressure Transmitters and DSB Pressure Switches

SAUTER pressure instrumentation encompasses piezoresistive differential pressure transmitters for air and gases across the MSX family (including MSX30 and MSX-W models) alongside rugged industrial pressure switches across DSB, DSL, and DSF series.

MSX30 transmitters are calibrated for continuous differential pressure monitoring across ventilation filters, static draft control in fan plenums, and volumetric air flow velocity measurement.

Units incorporate backlit digital LCD displays, jumper-selectable measurement spans (0...100 Pa up to 0...5000 Pa), and scalable 0–10 V / 4–20 mA outputs.

Electromechanical DSB pressure switches—protected within robust aluminum IP65 housings with stainless steel bellows rated up to 40 bar—provide dependable dry-run pump cutoff and boiler overpressure trips.

Multi-range MSX transmitters: selectable multi-span differential pressure ranges via onboard configuration jumpers
Critical HVAC filter diagnostics: ultra-low differential pressure sensing down to single Pascals with active digital readouts
Harsh environment DSB switches: high-grade stainless steel sensing bellows rated for extreme operating pressures up to 40 bar
Industrial microswitch reliability: gold-flashed snap-action contact mechanisms rated for inductive loads up to 10 A

SAUTER ASM and ASF Damper Actuators with Emergency Spring Return

SAUTER electric damper actuators across ASM 105, ASM 115, ASM 124, ASM 134, and fast-acting spring-return ASF series deliver automated angular positioning for airflow dampers, fire dampers, and smoke-extraction louvers within commercial ventilation networks.

The mechanical drive portfolio spans torque capacities from 2 Nm to 40 Nm, controlling damper surface areas reaching up to 8 m². A universal self-centering shaft adapter secures immediate clamping onto round drive shafts (8 to 20 mm diameter) and square profiles (6 to 14 mm).

Protected within IP54 industrial polymer enclosures, actuators feature adjustable integrated auxiliary limit switches for status reporting back into fire safety systems.

Expansive torque selection: models from 2 Nm up to 40 Nm governing compact VAV boxes and heavy multi-blade louvers
Fire and life safety compliance: ASF spring-return actuators drive fire and smoke dampers to safety during power loss
Universal clamping mechanism: self-centering shaft adapter attaches onto round and square shafts without adapters
Versatile control architecture: available in 2-point, 3-point (24 V / 230 V), and modulating continuous 0–10 V configurations

Genuine SAUTER Replacement Parts, Stuffing Box Cartridges, and Retrofit Kits

Genuine SAUTER replacement components, factory overhaul sets, and mechanical mounting accessories ensure specified stem sealing tightness, positioning repeat accuracy, and extended operational service lifetimes across industrial heating, cooling, and district energy facilities.

The available parts portfolio includes maintenance-free spring-loaded stuffing box cartridges featuring PTFE chevron seals and FKM secondary elastomers (catalog groups 0372xxx and 0361xxx), motorized stem coupling clamps, plug-in electronic positioner boards, stainless steel immersion thermowells LW

7 and LW 8 (AISI 316Ti / 1.4571), precision feedback potentiometers, and specialized retrofit linkage adapters engineered to mount modern SAUTER AVM electric actuators onto third-party globe valve bodies.

Self-adjusting stuffing boxes: spring-loaded PTFE/FKM chevron packings eliminate stem fluid leakage under cycling
Universal retrofit linkage kits: engineering adapters enabling AVM actuators to retrofit onto third-party valve frames
Modular electronic boards: plug-in 0–10 V positioner cards, auxiliary limit switch blocks, and communication boards
High-alloy sensor sleeves: premium AISI 316Ti (1.4571) stainless steel thermowells certified for pressure ratings to PN 40

Foundations of Building Automation Systems and Energy Efficiency by SAUTER

Established in 1910 in Switzerland by engineer Fritz Sauter, Fr. Sauter AG stands as one of the world foremost pioneers in precision environmental control and Building Automation and Control Systems (BACS).

Across more than a century of continuous engineering excellence, SAUTER has continuously perfected distributed direct digital control (DDC), building energy management, and climate regulation across mission-critical facilities including pharmaceutical cleanrooms, hospital complexes, high-density

data centers, and modern commercial real estate.

Modern SAUTER architectural concepts synthesize field-level sensing, direct digital automation stations, and supervisory management systems in strict conformance with European Standard EN 15232 (Energy Performance of Buildings).

Deploying freely programmable modulo 6 controllers and ecos room automation systems systematically eliminates thermal and electrical waste by up to 35-40%, allowing commercial and institutional facilities to achieve verified Class A building energy efficiency ratings.

The SAUTER platform is purposefully engineered for open, seamless multi-protocol interoperability. Subsystem field networks operating on Modbus RTU, M-Bus, KNX, and DALI-2 protocols seamlessly converge into high-speed BACnet/IP automation backbones.

At the enterprise supervisory layer, SAUTER Vision Center integrates across encrypted industrial OPC UA interfaces and native MQTT cloud connectivity, granting facility engineers centralized visibility and control over hundreds of thousands of dynamic data points in real time.

modulo 6 Computing Architecture and Industrial Network Cybersecurity

The flagship SAUTER modulo 6 automation platform—comprising EY-mod 680 and EY-mod 685 high-performance system controllers alongside the modular modu6xx input/output slice portfolio—establishes new computing benchmarks for critical building infrastructure.

The hardware architecture physically isolates core DDC algorithm execution from network protocol translation engines, eliminating real-time control jitter even during extreme network storms.

A paramount distinction of the modulo 6 platform is its embedded cybersecurity framework, strictly validated against international industrial cybersecurity standard IEC 62443-4-2.

Each controller integrates a dedicated hardware Trusted Platform Module (TPM 2.0) cryptoprocessor that validates firmware digital signatures upon startup and securely guards cryptographic keys and identity certificates against tampering.

Integrated dual Ethernet interfaces feature stateful packet inspection firewalls and native support for encrypted BACnet Secure Connect (BACnet/SC) communication.

This impenetrable architecture shields building operational technology (OT) networks from unauthorized intrusions, man-in-the-middle exploits, and eavesdropping during telemetry transmission across corporate enterprise IT infrastructures.

Engineering of AVM Electric Valve Actuators and AVF Fail-Safe Spring Mechanisms

SAUTER AVM linear electric valve actuators—encompassing versatile AVM 322, AVM 234S, AVM 124, and AVM 115 series—are precision-engineered for modulating control of globe valves in district heating substations, hydronic central heating plants, cooling towers, and industrial air handling units.

Driven by brushless synchronous electric motors coupled to precision planetary gear trains, AVM actuators guarantee smooth, low-noise positioning with outstanding resistance to axial line forces.

Valve stem travel is governed by onboard microprocessors supporting continuous proportional 0–10 V, 4–20 mA signals alongside standard 3-point floating commands.

An intelligent automatic stroke calibration algorithm (Stroke Adaptation) automatically maps mechanical seat limits upon initial commissioning, preventing mechanical seat crushing while eliminating manual calibration steps.

For emergency situations requiring positive mechanical closure, SAUTER supplies fast-acting spring-return AVF 234S actuators.

In the event of catastrophic mains power disruption, an internal mechanical spring mechanism executes an immediate emergency stroke (Safety Function) within seconds, driving the valve plug into its designated safe fail position to prevent heat exchanger freezing or thermal coil destruction without

relying on auxiliary battery packs.

Hydraulic Modulating Characteristics of VUN, BUG, and Valveco PICV Valves

Precise, repeatable hydronic temperature control requires optimized valve plug geometry and consistent flow authority.

SAUTER globe and mixing control valves—including screwed series VUN/VUD (brass/ductile iron, DN 15–50, PN 16) and flanged models BUG/BUE (grey iron EN-GJL-250 and nodular iron EN-GJS-400, DN 15–150, PN 16–40)—feature modified equal-percentage throttling characteristics that linearize heat exchanger

thermal output curves against actuator stroke.

Plugs and replaceable valve seat inserts are CNC-machined from high-grade austenitic chromium-nickel stainless steel, electrochemically passivated to resist cavitation erosion and chemical scaling.

This metallurgical resilience preserves design flow coefficients (Kvs) and maintains strict Class IV / IV-S1 shut-off tightness (leakage rate under 0.01% Kvs according to DIN EN 1349) even under abrasive steam and high-velocity hydronic flows up to +180°C.

To conquer dynamic hydronic balancing challenges in variable-flow circuits, SAUTER provides Valveco pressure-independent control valves (PICV series VCL and VCM).

Housed within a single compact brass body is an integrated differential pressure diaphragm regulator, an adjustable maximum flow limiter, and an electric modulating valve seat, permanently isolating parallel branch circuits from supply pressure fluctuations.

Turnkey International B2B Export Supply of Genuine SAUTER Automation Equipment

Equipguo delivers dependable, turnkey international export supply of genuine SAUTER building automation controllers, electric valve actuators, precision globe valves, sensors, and factory overhaul parts to mechanical engineering contractors, BMS system integrators, and industrial facilities

globally.

Our senior automation engineering specialists perform meticulous technical validation against original equipment manufacturer (OEM) nameplates, wiring schematics, and mechanical schedules to ensure seamless drop-in field replacement—including modernization pathways from legacy EY3600 automation

stations to modulo 6, and retrofitting discontinued AVM actuators with current AVM 234S units.

We offer competitive international commercial terms, multi-currency settlement options, export-compliant documentation, and dependable global logistics delivered directly to customer job sites worldwide.

Equipment pricing, delivery schedules, and minimum order quantities for SAUTER systems are quoted upon specific commercial inquiry; open price lists are not published.