Kromschroder VAS240F/NW Servo Motor Actuator
Technical specs, application notes, replacement checks, and related model references.
Product Overview
The Kromschroder VAS240F/NW is a high-performance Class A gas safety shut-off valve designed for industrial combustion processes. As an essential safety component within the Elster gas train architecture, it ensures instantaneous isolation of natural gas and LPG upon burner lockout or power failure. The robust actuator design delivers a closing time of less than 1 second, meeting the strictest international safety codes. With its modular assembly, the VAS240F/NW can be seamlessly integrated with pressure switches and valve proving systems, making it the premier choice for EN 161 compliant heating systems.
Key Features
- Valve Class: Class A Safety Shut-off Valve (EN 161 / ISO 23551-1)
- Closing Time: < 1 second for instantaneous fail-safe
- Construction: Rugged die-cast aluminum body with modular flange/thread connections
- Protection Class: IP65 for robust environmental resilience
- Approvals: CE, FM, CSA, and UL certified (depending on configuration)
Technical Specifications
Max Operating Pressure
500 mbar (50 kPa)
Closing Time
< 1 second
Opening Time
< 1 second (Quick opening)
Protection Class
IP 65
Valve Class
Class A (EN 161)
Selection Notes & Data Verification
The VAS240F/NW page is structured for engineering comparison: confirm the product type, firing range, fuel type, operating mode, electrical supply, and safety approvals against the manufacturer datasheet before specifying the burner or component.
Burner.wiki normalizes product data for discovery and comparison, but final selection should account for combustion chamber backpressure, local emission limits, control sequence requirements, and site commissioning conditions.
Typical Applications
Related Models
Related Knowledge
FAQ
What is Kromschroder VAS240F/NW used for?
Kromschroder VAS240F/NW is referenced as a servo motor actuator for industrial combustion systems. Verify the exact application against the burner documentation, control cabinet wiring, and manufacturer datasheet.
Can VAS240F/NW replace another model?
Replacement depends on voltage, safety timing, wiring terminals, flame supervision method, mechanical fit, and local combustion safety requirements.
What should be checked before installing VAS240F/NW?
Check supply voltage, burner sequence, fuel type, pressure or capacity range, detector compatibility, safety loop configuration, and the equipment nameplate before commissioning.
Documentation Note
Technical documentation should be verified against the manufacturer datasheet, burner cabinet wiring diagram, and equipment nameplate before installation or replacement.
- Check supply voltage and frequency.
- Confirm terminal layout and safety interlocks.
- Verify flame detector or actuator compatibility.
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