Description
1. Overview of Electric Three-Way Control Valve
The electric three-way control valve from VTON is engineered for applications requiring precise flow mixing or diverting. Designed with cylindrical thin-walled valve cores and guided by VTRD straight-stroke actuators, these valves achieve high-accuracy flow control for heat exchange and automation systems in industries like petroleum, chemical, and power generation.
Key Configurations:
- Merging Control Valve: Mixes two fluids into a single output, such as combining fluids of different temperatures to produce a uniform temperature.
- Diverting Control Valve: Divides a single fluid into two separate streams for different process requirements.
Technical Highlights:
- Nominal diameter: DN25 to DN200
- Nominal pressure: 1.0, 1.6, 4.0, 6.4 MPa
- Temperature range: -60℃ to 450℃
- Control signals: 0-10mA DC or 4-20mA DC
2. Features
- Stable Operation: The flow direction ensures “flow-open” conditions, enhancing stability.
- Enhanced Guiding: Both the valve cover bushing and the inner valve seat surface provide a large guiding area for reliable operation.
- High Precision: Equipped with dynamic negative feedback in the servo amplifier for improved adjustment accuracy.
- Versatile Operation: Supports 4-20mA DC or 0-10mA DC signals, with electronic valves enabling direct control without amplifiers.
- Cost-Effective: Simplifies systems by replacing two valves, reducing automation investment.
- Leakage Prevention: Bellows-sealed options ensure a complete seal, blocking fluid leakage.
3. Material Specifications
| Component | Material |
|---|---|
| Valve Body & Cover | HT200, ZG230-450, ZG1Cr18Ni9Ti |
| Valve Core & Seat | 1Cr18Ni9Ti with Stellite alloy surfacing |
| Packing | PTFE (Polytetrafluoroethylene) |
| Push Rod & Bushing | 2Cr13 |
4. Technical Parameters Overview
| Nominal Diameter (mm) | Converging Flow | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Diverging Flow | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||||||
| Rated Flow Coefficient (Kv) | Converging Flow | 8.5 | 13 | 21 | 34 | 52 | 85 | 135 | 210 | 340 | 535 | 800 | 1260 |
| Diverging Flow | 85 | 135 | 210 | 340 | 535 | 800 | 1260 | ||||||
| Nominal Pressure (MPa) | 1.6 4.0 6.0 | ||||||||||||
| Flow Characteristics | straight line | ||||||||||||
| Actuator | Type II | VTRD-310 | VTRD-310 | VTRD-410 | VTRD-510 | VTRD-510 | |||||||
| Type III | VTRD-510C | VTRD-310C | VTRD-410C | VTRD-510C | VTRD-510C | ||||||||
| Output Thrust (N) | 4000 | 4000 | 6400 | 16000 | 16000 | ||||||||
| Stroke (mm) | 16 | 25 | 40 | 60 | 100 | ||||||||
| Upper Valve Cover Type | 1.6 | 1.0 | 2.5 | 1.6 | 1.5 | 1.0 | 0.65 | 0.4 | 0.3 | 0.16 | 0.26 | 0.18 | |
| Allowable Pressure Difference (MPa) | Standard Type (Room Temperature Type), Heat Sink Type (Medium Temperature Type) | ||||||||||||
| Medium Temperature (℃) | -40～230℃ (Room Temperature Type), Heat Sink Type 230～450℃ (Medium Temperature Type), Special Order -100～600℃ | ||||||||||||
| Adjustable Ratio | 30:1 (This could refer to a ratio, such as a torque or force ratio, but without context, it’s a direct translation) | ||||||||||||
| Input Resistance | Type II: 200, Type III: 250 (These could be model numbers, power ratings, or other specifications) | ||||||||||||
| Factory Condition | Electric Open (with respect to the upper valve seat), if Electric Close is required, please specify when ordering | ||||||||||||
