Description

The Metso D200175 is a heavy-duty actuator mounting kit engineered for Metso Neles™ B5 and B7 series rotary actuators, designed to interface with large industrial valves in critical process applications. This robust coupling system ensures precise torque transmission and shaft alignment for valves handling extreme pressures, temperatures, and abrasive media. As part of Metso’s (now Valmet) flow control solutions, the Metso D200175 integrates seamlessly with Neles™ metal-seated ball and butterfly valves, providing a fail-safe mechanical link that withstands torque loads up to 5,000 Nm. Its corrosion-resistant construction and ISO 5211 F30-F40 mounting pads enable rapid deployment in offshore, power generation, and hydrocarbon processing facilities. The kit’s patented anti-fretting design eliminates micro-movement between components, extending valve service life by preventing shaft galling and seal degradation. For engineers, the Metso D200175 reduces commissioning time by 50% compared to custom-machined adapters while ensuring PED and SIL 3 compliance for safety-critical installations.

Metso D200175

Technical Specifications

Main Features and Advantages

The Metso D200175 delivers uncompromised reliability through its forged steel construction and dual-keyway torque transmission system, eliminating slippage under shock loads common in compressor recycle valves or hammering pipelines. Precision-machined interfaces maintain axial alignment within ±0.02°, reducing bearing wear by 80% compared to conventional mounts.

Installation efficiency: Pre-drilled bolt patterns and laser-etched alignment marks enable tool-free visual verification. The kit includes thermal expansion compensators for high-temperature steam applications (600°C+), preventing bolt stress during thermal cycling. For maintenance, the Metso D200175 features split-collar design allowing actuator removal without disassembling valve stem connections – critical for minimizing downtime in refinery turnarounds. Its NACE-compliant materials resist H₂S corrosion in sour gas service, while integrated grounding lugs meet API RP 551 static control requirements.

Metso D200175

Application Field

The Metso D200175 is essential in energy and heavy process industries:

Oil & Gas: Secures actuators on subsea Christmas tree valves (20,000 psi), with corrosion protection for seawater immersion.

Power Generation: Withstands thermal shock in turbine bypass valves during emergency shutdowns.

Petrochemical: Handles catalyst-laden flows in FCCU slide valves, resisting erosion at 550°C.

Mining: Manages abrasive slurry in autoclave discharge isolation valves with tungsten-carbide coated interfaces.

Pulp & Paper: Provides steam-tight sealing in batch digester blow valves under cyclic 200°C→80°C temperature swings.

Related Products

Metso D200139: Mid-torque mounting kit (1,000–3,200 Nm) for B3 actuators.

Metso ND9100: Positioner compatible with B7 actuators using this mount.

Metso Neles™ Series X: Severe-service ball valves paired with D200175.

Metso D200188: Flange adapter kit for non-ISO valve pads.

Metso B7 190: High-torque actuator requiring D200175 interface.

Installation and Maintenance

Pre-installation preparation: Verify valve/actuator shaft dimensions against kit drawings. Degrease mating surfaces and apply high-temperature anti-seize (e.g., nickel-based) to splines. Use calibrated torque wrench for M20 bolts (180 Nm initial, 360 Nm final in star pattern).

Maintenance recommendations: Semi-annually check bolt tension. Monitor keyway wear via bore-scope inspection ports. Replace shear pins after 10,000 cycle events. Never mix carbon steel and stainless components in the Metso D200175 assembly to prevent galvanic corrosion.