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This is a 3-way/2-way solenoid proportional modulating valve with DN20 (3/4″) conexión roscada y un valor Kvs de 5.0 m³/h. Funciona con fuente de alimentación de 24 V CA/CC., con señales de control seleccionables: 0-10V / 2-10V / 4-20mamá. It features a positioning time of less than 2 artículos de segunda clase, a resolution of 1:1000 and an IP54 protection rating. It is designed for mixing and straight flow control of cold and hot water in closed HVAC systems.
- Explicación del código del modelo
| Segmento de código | Descripción |
| MXG | Código de serie del producto: MX stands for solenoid actuator; G stands for external thread connection, suitable for cold and hot water systems |
| 461 | Model type code: ACVATIX™ series solenoid control valve, PN16 pressure rating |
| 0.2 | Nominal diameter DN: 20milímetros (3/4 pulgada) |
| -5 | Kvs flow coefficient: 5.0 m³/h (flow rate of cold water at 1 bar pressure differential) |
| (Suffix P) | Optional version: For media containing mineral oil (SAE05…SAE50) |
| (Suffix U) | Optional version: Equipped with NPT thread fitting set |
- Especificaciones técnicas principales
| Categoría | Presupuesto | Observaciones |
| Parámetros básicos | ||
| Valve Type | Switchable 3-way mixing valve / 2-way straight valve | Not applicable for diverting service |
| Tipo de conexión | External thread G1¼B (ISO 228-1) | DN20 corresponds to 3/4 pulgada |
| Nominal Pressure | PN16 (1.6MPa) | máx.. working pressure: 1000kPa |
| Coeficiente de flujo | Kvs=5.0 m³/h, Cv=5.9 | Cold water at 5-30℃, 1 bar pressure differential |
| Actuator Parameters | ||
| Fuente de alimentación | AC/DC 24V ±20% (SELV/PELV) | Frecuencia: 45-65Hz |
| Señal de control | DC 0/2-10V or DC 4-20mA (DIP switch selectable) | Input impedance: ≥100kΩ (voltage signal), 100Oh (current signal) |
| Position Feedback | DC 0-10V (Load resistance >500Oh) | Non-wear inductive measurement |
| Positioning Time | < 2 artículos de segunda clase | Respuesta rápida |
| Stroke Resolution | 0.736111111 | High regulating accuracy |
| Clase de protección | IP54 | Dustproof and splash-proof |
| Valve Body Parameters | ||
| Valve Body Material | Cast iron EN-GJL-250 (GG25) | Plug: CrNi steel; Seat: Latón |
| Material del sello | EPDM (Estándar) / FPM (Type P) | For different media |
| Medium Temperature | 1-130℃ | For cold and hot water systems |
| Leakage Rate | A→AB: ≤0.02% Kvs; B→AB: ≤0.2% Kvs | At Δp=0.1MPa |
| Posición de montaje | Vertical to horizontal installation available | No special angle restrictions |
| Fail-Safe Function | Port A→AB closes automatically upon power loss (spring return) | Safety protection feature |
| Parámetros físicos | ||
| Dimensiones (L1×L2×L3×H2) | 95×47.5×52.5×260mm | Under straight flow status |
| Peso | 4.2kilos |
- Lista completa de modelos de serie
| Modelo | DN | Kvs (m³/h) | Tipo de conexión | Medio aplicable | Observaciones |
| MXG461.15-0.6 | 15 | 0.6 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.15-1.5 | 15 | 1.5 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.15-3.0 | 15 | 3 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.20-5.0 | 20 | 5 | External thread | Cold & agua caliente | Modelo actual |
| MXG461.25-8.0 | 25 | 8 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.32-12 | 32 | 12 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.40-20 | 40 | 20 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.50-30 | 50 | 30 | External thread | Cold & agua caliente | Modelo estándar |
| MXG461.XX-XXP | 15-50 | 0.6-30 | External thread | Mineral oil | Version for oil media |
| MXG461.XX-XXU | 15-50 | 0.6-30 | External thread | Cold & agua caliente | Version with NPT fittings |
| MXF461.XX-XX | 15-65 | 0.6-50 | Brida | Cold & agua caliente | Flanged version |
- Marca cruzada & Replacement Model Reference
| Categoría | Modelo | Matching Rate | Diferencias |
| Siemens Equivalent Models | MXG461.20-5.0P | 100% | Only seal material changed to FPM, suitable for mineral oil |
| MXG461.20-5.0U | 100% | Supplied with NPT thread fittings for easier installation | |
| MXF461.20-5.0 | 95% | Flanged connection type, different mounting method | |
| Alternativas nacionales | Muyi MVC20-5.0 | 90% | Identical functions, aprox. 60% of Siemens price, response time 2-3s |
| Chuanyi ZDLP-20K | 85% | Electric actuator, slightly lower accuracy, IP65 rating | |
| Imported Competitors | Honeywell V5011P2010 | 90% | Similar structure and price, positioning time around 2s |
| Danfoss AVTA20-50 | 85% | Slightly different flow characteristics, operating temperature 2-120℃ |
- Entorno de aplicación & Casos de la industria
5.1 Escenarios aplicables
Sistemas HVAC: Cold/hot water mixing control and fan coil unit temperature regulation for commercial buildings, hotels and hospitals
District Heating: Secondary hot water temperature control for residential communities and office parks
Industrial Temperature Control: Water flow regulation for chillers and heat pumps, cooling systems for data centers
Process Cooling: Temperature control loops for plastic molding machines and printing equipment
5.2 Escenarios no recomendados
Media with solid particles (A pre-filter with filtration accuracy ≥100μm is required)
Vacuum systems or working conditions with high pressure differential (>300kPa)
Diverting flow applications (For mixing and straight flow only)
Corrosive media (Select MXG461S stainless steel version)
5.3 Casos de aplicación típicos
Caso 1: HVAC System of Commercial Complex
Project: HVAC water system renovation for a 30-floor shopping mall
Solicitud: Cold and hot water mixing control for air handling units on each floor, total 80 sets of MXG461.20-5.0
Outcome: Temperature control accuracy improved to ±0.5℃, energy consumption reduced by 18%, response speed tripled
Caso 2: Industrial Water Chiller
Equipo: 500RT screw chiller
Solicitud: Chilled water outlet temperature control (7℃), 4 units operated in parallel
Características: Matched with Siemens PLC for 0-10V proportional control, water temperature fluctuation stabilized below 0.3℃
- Solución de problemas & Maintenance Guide
| Fenómeno de falla | Posibles causas | Pasos para solucionar problemas | Soluciones |
| Valve fails to operate | 1. No power supply | 1. Measure terminal voltage (24V±20%) | 1. Reparar circuito de potencia |
| 2. Missing control signal | 2. Check 0-10V/4-20mA control signal | 2. Inspect controller output | |
| 3. Actuator failure | 3. Manual operation test (Turn handwheel clockwise) | 3. Replace ASE1 electronic module | |
| Poor regulating accuracy | 1. Position offset | 1. Perform auto-calibration (Long press calibration button) | 1. Recalibrate the valve |
| 2. Incorrect valve characteristic setting | 2. Check DIP switch (Linear / Equal percentage) | 2. Reset DIP switch | |
| 3. Impurities in medium | 3. Inspect filter cleanliness | 3. Clean the filter | |
| Excessive leakage | 1. Aged seals | 1. Check seal condition | 1. Replace EPDM seals |
| 2. Worn valve seat | 2. Measure leakage under closed status | 2. Replace valve seat assembly | |
| 3. Excessive pressure differential | 3. Confirm system pressure differential ≤300kPa | 3. Install bypass valve to reduce pressure difference | |
| Abnormal feedback signal | 1. Faulty feedback wiring | 1. Measure feedback terminal voltage (0-10V) | 1. Repair feedback wiring |
| 2. Damaged electronic module | 2. Check module indicator lights | 2. Replace electronic module | |
| 3. Defective inductive sensor | 3. Inspect sensor connection | 3. Replace inductive sensor |
Programa de mantenimiento
| Artículo de mantenimiento | Cycle | Operation Content |
| Inspección visual | Mensual | Check valve body and actuator for damage and loose connections |
| Filter Cleaning | Trimestral | Clean inlet filter to prevent impurity ingress |
| Auto-Calibration | Semi-annually | Execute auto-calibration to ensure positioning accuracy |
| Seal Inspection | Annually | Check seal aging and replace if necessary |
| Overhaul | Cada 3 años | Dismantle for internal inspection and replace wearing parts |
- Directrices de selección
- Three Key Selection Factors: DN size (match pipeline) → Kvs flow rate (meet system demand) → Medium type (Standard type for cold/hot water, Type P for mineral oil)
- Signal Selection: DC 0-10V for general control; DC 4-20mA for long-distance transmission (fuerte anti-interferencia)
- Consejos de instalación: Follow the flow direction marked on the valve body; do not use as diverting valve; 4-wire connection for power and signal ensures higher stability
- Fault Judgment: Automatic shutdown after power loss (spring return) is a standard safety function; manual operation can quickly verify mechanical performance
- Información de pedido
Modelo estándar: MXG461.20-5.0 (BPZ:MXG461.20-5.0)
Accesorios recomendados: ALG203 thread fitting set (3 union nuts + 3 gaskets + 3 arandelas simples), Z155/20 blind flange set
Replacement Module: ASE1 electronic module (Applicable for DN15-32)
Supplementary Application Description
MXG461.20-5.0 is a DN20 solenoid proportional modulating valve with Kvs=5.0. It is mainly used for continuous and precise temperature control in closed cold and hot water systems. Featuring fast positioning (<2s) and high resolution (1:1000), it is only applicable for mixing and straight flow, not for diverting service.
- climatización & Refrigeration (Primary Application)
Air Handling Units / Fresh Air Units: Proportional regulation of cold/hot water coils to stabilize supply air temperature (±0.5℃)
Fan Coil Units (FCU): Terminal temperature control for high-rise and commercial buildings, available for 2-way on/off or 3-way mixing flow
Chilled Water Systems: Water temperature regulation and bypass mixing control for chillers
Cooling Tower Control: Stabilize cooling water temperature and save energy
Computer Room Precision Air Conditioning: High-precision water temperature control for data center and equipment room cooling
- District Heating & Boiler Systems
Heat Exchanger Stations: Secondary hot water temperature regulation and mixing loop control
Radiant Floor Heating: Limit supply water temperature (35–45℃) and prevent overheating via 3-way mixing
Boiler Load Control: Stabilize hot water outlet temperature and follow system load changes
Domestic Hot Water (DHW): Mix cold and hot water to provide constant-temperature water (p.ej. 45–55℃)
- Industrial Process & Special Media
Process Cooling: Precise cooling water temperature control for injection molding machines, printing machines and lasers
Mold Temperature Controllers: Proportional regulation for thermal oil and hot water circuits (Type P for mineral oil)
Alimento & Pharmaceutical Industry (Sanitary Application): Closed-loop temperature control for pure water and hot water
Solar Water Heating Systems: Mix water from solar collectors and return water for constant water supply
- Typical Circuit Applications
3-way Mixing (Combining Flow): Mix high-temperature primary water and low-temperature secondary water to stabilize supply water temperature (most common application)
2-way Straight Flow: On/off or proportional regulation for coil/equipment inlet, automatic shutdown upon power loss for safety
Bypass / Differential Pressure Control: Stabilize system pressure difference and balance flow under partial load
- Disqualified Application Scenarios
❌ Media with solid particles (Pre-filter ≥100μm required)
❌ Diverting flow service (Mixing and straight flow only)
❌ Vacuum conditions, high pressure differential (>300kPa) or highly corrosive media
❌ Steam systems (Operating medium: cold/hot water and thermal oil, 1–130℃)
- Application Matching Based on Core Advantages
Respuesta rápida (<2s): Ideal for systems with fluctuating load requiring rapid temperature stabilization, such as HVAC terminals and process cooling
Resolución alta (1:1000): Suitable for high-precision temperature control scenarios including precision air conditioning, pharmaceutical and electronic manufacturing
Power-off Safety (Port A→AB Closed): Safety loop for heating and hot water systems to avoid overheating and scalding risks
