Siemens VVF53.25 Flanged Globe Valve

Siemens ACVATIX™ long-stroke 2-way flanged globe valve, DN25 nominal diameter, PN25 pressure rating. Suitable for media temperature range -20~220°C. Matched with SAX/SKD/SKB/SKC series actuators. Applied to fluid control such as steam, hot water and thermal oil. Typical model: VVF53.25-10 (Kvs=10m³/h). Order numbers start with S55208.

1. Model Segment Definition

2. Full Version Core Specification Table

3. Full Series Model List (VVF53 2-Way Flanged Globe Valve)

4. Competitor / Obsolete Model Replacement List

4.1 Same Brand Alternative Models (Directly Compatible)

4.2 Cross-Brand Equivalent Models

5. Application Environment & Industry Cases

Recommended Application Scenarios (★★★★★)

HVAC System: Temperature control for central air conditioning water systems in commercial buildings, hotels and hospitals

Industrial Steam System: Steam heating and humidification control in textile, food and pharmaceutical industries

District Heating: Secondary side temperature regulation for urban heating pipe networks

Refrigeration System: Flow control for chillers and cooling towers

Industrial Fluid Control: Regulation of process fluids (hot water, thermal oil, condensate) in chemical and power industries

Renewable Energy: Heat exchange control for solar energy and ground source heat pump systems

Typical Application Cases

1. Steam Sterilization System in Food Processing Plant

Application Target: Precisely control steam flow to keep sterilization temperature stable at 121°C

Core Advantage: Equal percentage flow characteristic adapts to wide range flow regulation; PN25 rating withstands steam pressure fluctuation

System Configuration: VVF53.25-10 + SKD62 electro-hydraulic actuator + S7-1200 PLC control

Operation Effect: Temperature control accuracy ±0.5°C, sterilization efficiency +20%, energy consumption -15%

2. Central Air Conditioning System of Commercial Complex

Application Target: Regulate chilled water flow to realize independent temperature control in different zones

Core Advantage: Compatible with SAX61.03 electric actuator with fast response; flanged design for easy installation and maintenance

System Configuration: VVF53.25-8 + SAX61.03 actuator + room thermostat + building management system

Operation Effect: Room temperature accuracy ±1°C, improved comfort, system energy consumption -18%

Not Recommended Scenarios (★☆☆☆☆)

High differential pressure＞16bar: Adopt VVF53K high differential pressure version

Strongly corrosive media such as strong acid and alkali: Select special alloy valves

Temperature over 220°C or below -20°C: Beyond nominal range, sealing performance declines

Media containing solid particles: Easy seat wear and increased leakage

Vacuum system: Not applicable; dedicated vacuum valve required

6. Installation & Wiring Guidelines (Engineering Essential)

Installation Regulations

1. Mounting Direction: Vertical installation with actuator upward; horizontal installation must keep actuator shaft horizontal
2. Flow Direction: Install strictly according to valve body arrow; reverse installation not allowed
3. Pipeline Preparation: Flush pipelines thoroughly before installation; 100μm filter is recommended
4. Flange Connection: Use ISO 7005 standard flanges; fasten bolts evenly to avoid valve body deformation
5. Insulation: Insulate valve body for high temperature media to reduce heat loss and prevent scalding
6. Maintenance Space: Reserve ≥200mm clearance around valve for actuator disassembly and servicing

Actuator Wiring Diagram (SAX61.03 Example)

1  2  3  4  5  6  7  8

┌─────────────────────┐

│                     │

│  SAX61.03 Actuator  │

│                     │

└─────────────────────┘

Commissioning Key Points

1. Stroke Calibration: Perform automatic stroke calibration after power-on to ensure full open / full closed position accuracy
2. Flow Test: Verify linear relationship between control signal and flow via PLC output
3. Leakage Inspection: Check closed valve leakage complies with Class IV standard
4. Response Time: Test full travel response time to meet system control requirements
5. Alarm Configuration: Set actuator fault alarms (over torque, power failure) for system monitoring
6. Selection Mnemonic & Quick Rules

Selection Mnemonic

Siemens 2-way VVF53,

DN25 size PN25 rated,

Long-stroke high precision guaranteed,

Equal percentage flow graded,

Fit steam and hot water shaded,

-20 to 220°C ranged,

Kvs 6.3/8/10 selected,

SAX/SKD actuators matched,

K version for high pressure dated,

JC for corrosion related,

Order by S55208 validated,

Flanged mounting firmly stated.

Quick Selection Rules

1. Diameter Matching: Choose DN15~DN250 by pipe size; DN25 corresponds to VVF53.25
2. Kvs Calculation: Calculate required Kvs via formula \(Kvs=Q\times\sqrt{\Delta P/\rho}\) according to system flow and differential pressure
3. Pressure Rating: Standard for regular conditions, -K version for high differential pressure
4. Media Temperature: Standard range -20~220°C; customized for over-limit temperature
5. Actuator Selection: SAX electric for small torque; SKD/SKB/SKC electro-hydraulic for large torque
6. Special Conditions: Select -JC stainless steel internal parts for corrosive media
7. Air Freight Compliance & Certification Info (International Trade)

Air Freight Compliance: No lithium battery / super capacitor. Valve body metal construction, electric / electro-hydraulic actuator. Compliant with IATA DGR Class 9 non-restricted goods, shippable as general cargo.

Certifications:

CE: Compliant with EN 12516-1, EN 60730

UL: Compliant with UL 1995 industrial control standard

CSA: Canadian electrical safety approval

ATEX: Suitable for potentially explosive atmosphere (actuator certified separately)

ISO 9001: Quality management system certification

Environmental Certification: RoHS compliant, free of lead, mercury, cadmium; meets REACH regulations.

9. Purchasing & Inventory Information