API 609

API 609 Butterfly Valve Components, Discs & Shafts

Valve Discs & Shafts

High-integrity butterfly valve discs, shafts, and resilient seats engineered for high-performance shut-off and throttling services in large-diameter pipelines.

Materials Available: Ductile Iron, CF8M Stainless Steel, Monel, Duplex SS

Standard Size Range: 2 inch to 48 inch (DN50 – DN1200)

Standard Finishes: Epoxy Coating, Electroless Nickel Plating (ENP), Precision Polishing

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Technical Overview: API 609 Compliant Components

Our butterfly valve discs feature aerodynamic profiles designed to maximize flow coefficients (C_v) and significantly reduce pressure drops across the pipeline.

All shafts and stems are precision ground to tight tolerances to ensure smooth rotation, minimize friction, and provide a reliable, long-lasting tight shut-off.

High-Performance Engineering Features & Benefits

Aerodynamic Disc Profile: Minimizes fluid flow resistance and turbulence.
Precision-Ground Stems: Prevents stem leaks and reduces operational wear.
Resilient Seat Support Profiles: Ensures zero-leakage shut-off performance.
High Pressure & Temperature Resistance: Built for harsh industrial environments.
Extended Service Life: Durable material options reduce maintenance downtime.

Heavy-Duty Industrial & Marine Applications

Our high-precision butterfly valve components are critical for positioning and control assemblies across multiple sectors:

Power Generation: Plant cooling water lines and condenser systems.
HVAC Systems: High-volume air flow control and chilled water distribution.
Municipal Infrastructure: Water main networks and treatment plants.
Process Industries: Bulk powder flow control and chemical transfer.

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Frequently Asked Questions

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