Product Description
The Metso VPVL100SR6BD is a rugged spring return pneumatic actuator engineered for fail safe operation of ball valves, butterfly valves, and other quarter turn rotary valves in demanding industrial environments. Manufactured as part of the Metso Jamesbury Valv Powr VPVL series, this double opposed piston actuator delivers consistent torque output and exceptional cycle life, ensuring reliable valve automation across chemical processing, oil and gas pipelines, pulp and paper mills, water treatment facilities, and power generation plants.

This Metso pneumatic actuator features a compact rack and pinion design with dual opposed pistons, providing constant torque throughout the 90 degree rotation. The VPVL100SR6BD is configured as a spring return model (SR6 designation), meaning it automatically returns the valve to a predetermined safe position—either normally closed or normally open—upon loss of air supply. This fail safe functionality is critical for emergency shutdown systems and high risk applications where uncontrolled valve movement could lead to equipment damage or safety hazards. The actuator produces 8.9 ft lbs of torque at 80 psi supply pressure with 9.8 ft lbs of spring return torque, making it well suited for size 100 valve applications.

Corrosion resistance is a key strength of the Metso VPVL100SR6BD. The extruded aluminum body features a hard anodized PTFE coated finish, while the end caps are protected with a durable polyester coating. Stainless steel fasteners are used throughout, and the internal springs are epoxy coated for additional protection. This multi layer corrosion resistant construction allows the actuator to perform reliably in harsh environments including offshore platforms, marine installations, chemical plants, and areas exposed to washdowns or high humidity. The actuator body is honed internally for reduced friction and extended service life.

Maintenance is simplified by the modular design of the Metso VPVL100SR6BD. The same body and end caps are used for both double acting and spring return configurations, allowing field conversion when process requirements change. Low friction bearings are fitted on all rotating and sliding surfaces, minimizing wear and extending the actuator’s operational lifespan. The rack and pinion mechanism uses precision machined gear teeth for smooth engagement and maximum efficiency. The Metso VPVL100SR6BD is factory lubricated for life under normal operating conditions, requiring minimal routine maintenance and significantly reducing downtime costs.

Installation flexibility is built into the Metso VPVL100SR6BD with ISO 5211 mounting patterns that ensure direct compatibility with a wide range of industrial valves. Accessory mounting follows NAMUR VDI VDE 3845 standards, allowing easy attachment of solenoid valves, limit switches, positioners, and mechanical safety lockout devices. The actuator includes externally adjustable travel stops for both open and closed positions, enabling precise valve stroke setting without disassembly. An important safety feature of the Metso VPVL100SR6BD is the venting mechanism built into the adjustment screws, which audibly releases internal pressure before the screw is fully backed out, warning the operator of an unsafe condition.

The Metso VPVL100SR6BD meets rigorous industry certifications including ATEX for potentially explosive atmospheres, ensuring suitability for hazardous area installations. The actuator operates on compressed air or nitrogen with a maximum supply pressure of 116 psi. The standard temperature range spans from -40°C to +80°C (-40°F to +176°F), with optional extended ranges available down to -51°C (-60°F) and up to +150°C (+302°F) for specialized applications. For safety instrumented systems, the Metso VPVL series is certified capable for SIL 2 and can be configured for SIL 3 with redundant architectures.

For plant engineers and maintenance managers seeking a durable, fail safe valve actuation solution, the Metso VPVL100SR6BD spring return pneumatic actuator delivers proven reliability backed by Metso’s global engineering support. Its combination of compact symmetrical design, high cycle life, corrosion resistant construction, and fail safe spring return action makes it the preferred choice for automating rotary valves in critical process control loops. Choose the Metso VPVL100SR6BD for consistent performance, reduced downtime, and enhanced operational safety.