Product Core Brief

• Model: A413600
• Brand: Metso / Neles (Valmet Automation)
• Series: OEM mechanical mounting accessory for ND9000 intelligent valve positioners
• Status: Active production original spare hardware kit, new complete sets available
• Core Function: Provide shared NAMUR NE107 standard mounting interface to fix ND9102HX / ND9103HX series positioners together with matching A413331 / A413240 / A413139 filter regulators on the same pneumatic actuator top plate; integrate full stainless fasteners, spacers and sealing gaskets for compact side-by-side layout without extra separate brackets
• Product Type: Complete dual-unit NAMUR combined mounting hardware kit
• Key Specs: NAMUR NE107 standard footprint; stainless steel bracket plate + full installation hardware; compatible ND9102HX / ND9103HX positioners + A413331/A413240/A413139 filter regulators; anti-corrosion surface treatment; fits linear and rotary Neles actuators; Condition: New Original Complete Kit

Product Introduction

The Metso is a factory standard combined mounting bracket kit designed to install an ND9000 series intelligent positioner and its matched A413xx air filter regulator on one shared actuator NAMUR interface. Instead of two separate individual brackets, this single plate mounts both devices side-by-side, reducing field valve assembly space, shortening pneumatic pipe runs and minimizing leakage points.The bracket base uses corrosion-resistant coated stainless steel to withstand humid pulp mill, chemical and offshore hazardous ambient. The kit includes all required stainless screws, height spacers and rubber anti-vibration gaskets to avoid metal-to-metal vibration transfer which would cause valve positioning hunting over long-term operation.It is exclusively sized for small and medium positioners ND9102HX and ND9103HX paired with A413331 (mini), A413240 (standard medium) and A413139 medium flow filter regulators. OEM design eliminates pipe interference between positioner pneumatic ports and filter regulator outlet connections.

Key Technical Specifications

Quality Control Process (Engineer’s Perspective)

1. Incoming Verification: Match kit serial batch codes with Metso accessory production manifests to screen counterfeit incomplete hardware sets. Inspect stainless plate for bending, coating peeling; count all screws, spacers and gaskets to confirm full kit completeness.
2. Assembly Fit Test: Mount ND9103HX + A413240 filter regulator onto the bracket, then fit to standard NAMUR test actuator plate. Verify zero mechanical interference, aligned pneumatic port positions and smooth screw fastening without cross-threading.
3. Vibration & Corrosion Simulation Check: Validate rubber gasket elasticity to suppress actuator operating vibration; stainless plate salt spray test pass standard industrial corrosion requirements.
4. Installation Dimension Confirmation: Measure spacing between positioner and filter regulator ports to confirm straight short pipe routing without bending stress on G1/4 threaded connections.
5. Final QC & Packaging: All hardware placed in original sealed plastic bag with part label, attached dated QC Pass sticker before warehouse storage.

Replacement Pitfall Guide

❗ Model Compatibility Limitation Risk: cannot fit large ND9104HX / ND9200 positioners or high-flow A413337 filter regulators; oversized hardware will cause mechanical collision and port misalignment.❗ Hardware Loss Risk: Never reuse generic carbon steel screws as replacement parts; carbon steel fasteners corrode rapidly in humid pulp/chemical plants, leading to bracket loosening and positioner signal drift. Only original stainless hardware from kit can be used.❗ Gasket Omission Risk: Skipping anti-vibration rubber gaskets creates direct metal contact between bracket and actuator; continuous valve stroke vibration transfers to positioner internal sensor, triggering frequent stroke deviation alarms.❗ Over-Torque Screw Damage Risk: Excessive torque during assembly deforms thin stainless bracket plate and distorts NAMUR mounting holes; follow Metso recommended torque value to avoid thread stripping and plate bending.❗ Pipe Length Miscalculation Risk: The side-by-side layout requires shorter pneumatic tubing; reuse of long pipe sections creates unnecessary air volume lag and slows valve stroke response speed.Keep these in mind and you’ll cut 90% of rework time.

Compatibility Matrix & Benchmarks

Compatibility Matrix

• ND9102HX Mini intelligent valve positioner → : Fully matched combined mount
• Medium intelligent valve positioner → : Direct OEM matching bracket
• A413331 Mini low-flow filter regulator / A413240 Standard medium-flow / A413139 Medium flow → : Compatible filter regulator models
• Neles linear/rotary actuators with standard NAMUR NE107 top plate → : Universal fit
• ND9104HX / ND9200 Large high-flow positioners + A413337 high-flow filter regulator → : Incompatible, mechanical size mismatch

Benchmarks

• Vibration isolation reduction via rubber gasket: ≥75% actuator mechanical vibration suppression
• Salt spray corrosion resistance lifespan: ≥500 hours without rust on stainless bracket plate
• Assembly space saving compared to two separate single brackets: ~30% smaller footprint on actuator top plate