Product Description
The Festo VOFC is an indirectly controlled pilot valve engineered for particularly demanding operating conditions in process automation, specifically for the chemical and petrochemical industries . Featuring a redundant version certified for safety systems up to SIL3, this valve is suitable for outdoor use under harsh ambient conditions and is especially suited for quarter-turn actuators thanks to its NAMUR flange pattern .
Key Features & Advantages:
Certified Safety Integration: Available in a redundant design with TÜV certification up to SIL3 (IEC 61508) . Variants with safety functions enable reliable integration into safety-critical control loops and emergency shutdown systems.
NAMUR Flange Pattern: The standardized NAMUR flange pattern (VDI/VDE 3845) allows direct mounting to quarter-turn actuators, eliminating the need for additional brackets and tubing .
Dual Pilot Air Supply: Features a selector that allows the valve to switch between internal and external pilot air supply, providing flexibility for different system configurations and pressure conditions .
Harsh Environment Ready: Ematal-coated aluminum housing provides exceptionally high corrosion resistance (CRC 4 - very high corrosion stress) . Suitable for outdoor use under dusty, humid, and chemically aggressive ambient conditions .
ATEX Explosion Protection: Available in variants compliant with EU Explosion Protection Directive (ATEX), including certifications for Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas .
High Flow Performance: Delivers flow rates from 601 L/min to 3,462 L/min depending on valve function and configuration, ensuring efficient actuation of process valves .
Technical Specifications:
| Specification | Value |
|---|---|
| Brand | Festo |
| Series | VOFC |
| Valve Functions Available | 3/2-way, 5/2-way |
| Actuation Type | Solenoid, indirectly controlled (pilot-operated) |
| Standard Nominal Flow Rate | 601 – 3,462 L/min (varies by variant) |
| Operating Pressure Range | 3 – 8 bar (43.5 – 116 psi) |
| Design | Piloted piston spool / Poppet valve |
| NAMUR Mounting Pattern | Yes – VDI/VDE 3845 |
| Pilot Air Supply | Switchable between internal and external |
| Housing Material | Ematal-coated aluminum (hard anodized) |
| Seal Material | NBR (nitrile rubber) |
| Corrosion Resistance Class | CRC 4 – Very high corrosion stress |
| Protection Class | IP65 |
| Ambient Temperature Range | -25°C to +60°C |
| Port Threads | G1/4, G1/2, 1/4 NPT options |
| Width | 51 mm |
| ATEX Certification | Zone 1, 2, 21, 22 available |
| Safety Certification (Redundant) | TÜV SIL3 acc. to IEC 61508 |
| UL Certification | Available on select variants |
| RoHS Compliant | Yes |
Safety Variants & Functions:
Redundant valve configuration for SIL3 safety systems
Integrated spring chamber breather/ventilation function protects single-acting actuators from contaminated ambient air and weather influences
Safe venting feature
Variants with TÜV approval up to SIL3
Ideal For:
Process automation in chemical and petrochemical industries, oil and gas facilities, pharmaceutical manufacturing, hazardous area installations (ATEX Zone 1/2/21/22), quarter-turn butterfly valve and actuator control, outdoor installations exposed to harsh weather, dust, and corrosive environments, safety-related control systems up to SIL3, and applications requiring NAMUR flange pattern mounting.
Why Choose FESTO VOFC?
Choose the Festo VOFC for its TÜV-certified SIL3 redundant safety design, NAMUR flange pattern for direct quarter-turn actuator mounting, Ematal-coated aluminum housing for CRC 4 corrosion resistance, and ATEX explosion protection—delivering process-safe, reliable pneumatic control for demanding Malaysian chemical, petrochemical, and hazardous location applications.
Tags:
#Festo #VOFC #SolenoidValve #NAMURValve #SIL3 #ATEX #ProcessAutomation #HazardousLocation #QuarterTurnActuator #MalaysiaSupplier
Malaysia
