Full-bore Three-way High-pressure Metal-sealed Plug Valve

The full-bore three-way high-pressure metal-sealed plug valve is a specialized type of plug valve that combines three core features: full bore, three-way configuration, and high-pressure metal sealing. It is widely used in industrial fluid control applications, particularly in harsh operating environments such as the petrochemical and chemical industries.

一. Product Structure and Principle

The valve body is the core component of the product, typically made of high-quality cast steel or stainless steel. These materials ensure high-pressure resistance while enhancing the product’s corrosion resistance. The plug is the key moving part, featuring a full-bore design where the bore diameter matches that of the pipeline, significantly reducing fluid flow resistance. A metal-to-metal sealing method is employed to prevent media buildup and residue. The metal-to-metal sealing material is Stellite alloy or stainless steel, ensuring a tight seal even under high-pressure conditions and minimizing the risk of leaks. The tee design is its most distinctive feature, equipped with three connection ports to enable fluid diversion and convergence. It serves as a single unit to replace multiple valves, saving installation space and simplifying pipeline layout.

二. Product Advantages

1. Exceptional High-Pressure Resistance: Withstands pressures up to ANSI Class 2500, meeting API 6A and API 599 standards, and is compatible with various high-pressure piping systems.

2. Reliable Metal Sealing Performance: The metal seal offers wear and heat resistance, operating stably at temperatures up to 550°C, ensuring a long service life and reducing replacement costs.

3. Full-bore flow path design: Ensures smooth, unobstructed fluid flow with minimal pressure loss. Capable of handling fluid media containing suspended solids, minimizing the risk of clogging.

4. Flexible flow control: Utilizes a quarter-turn operation mechanism for fast, efficient opening and closing. Enables rapid switching of fluid flow direction with simple, time- and labor-saving operation.

5. Durable and Easy to Maintain: The product features a simple, well-designed structure with few moving parts, resulting in minimal wear and tear, a low failure rate, and straightforward daily maintenance.

三. Product Applications

Full-bore three-way high-pressure metal-sealed plug valve are widely used across multiple industrial sectors, meeting the specific needs of various industries.

Oil and Gas Industry: Used in wellheads and pipeline systems to handle media such as crude oil, natural gas, and fracturing fluids; resistant to hydrogen sulfide corrosion.

Chemical and Petrochemical Industry: Suitable for various corrosive media (such as acids, alkalis, and organic solvents), ensuring stable operation of production processes.

Power Generation Industry: Used in thermal power plants and nuclear power plants to control the flow of cooling water and steam, meeting high safety standards.

Water Treatment and Wastewater Treatment Industry: Used to handle media such as slurry and wastewater.

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