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Our large-diameter butterfly valve packing set is precision-engineered to deliver uncompromising sealing reliability for high-performance valve systems, catering to the stringent demands of critical industrial applications. With a precise dimension specification of ID 170 mm × OD 186 mm, this packing set is tailored to fit seamlessly into corresponding butterfly valve assemblies, eliminating compatibility gaps and ensuring a tight, leak-proof interface from the moment of installation.

At the core of its robust design is a dual-material construction that marries two high-performance components for exceptional functionality. The base material is anti-oxidation graphite, a premium sealing compound renowned for its inherent chemical stability, low friction coefficient, and ability to maintain structural integrity even in the presence of corrosive media and high-temperature fluctuations. This graphite matrix is further reinforced with braided Inconel 600 wire—a nickel-chromium alloy celebrated for its superior thermal resistance, mechanical strength, and resistance to oxidation and creep at extreme temperatures. This reinforcement not only boosts the packing set’s tensile strength to withstand high-pressure loads and valve stem movements but also prevents extrusion and deformation over prolonged use, significantly extending service life and reducing maintenance frequency.

What sets this packing set apart is its strict adherence to global industry benchmarks: it fully complies with ISO 15848-1 (the international standard for industrial valve fugitive emissions) and API 622 (the American Petroleum Institute standard for valve packing materials and design). These certifications validate its ability to achieve ultra-low fugitive emissions, a critical requirement for industries focused on environmental compliance and operational safety. By minimizing harmful leaks of gases, fluids, or vapors, the packing set helps facilities meet regulatory standards while mitigating risks of equipment damage, operational downtime, and safety hazards.

Ideal for deployment in critical service valves across the oil and gas, petrochemical, and power generation sectors, this packing set excels in harsh operating environments—from high-pressure pipeline valves in oil refineries to high-temperature steam valves in power plants, and corrosive fluid handling systems in petrochemical facilities. Whether for new valve installations, retrofitting projects, or routine maintenance overhauls, this packing set delivers consistent, long-lasting sealing performance that engineers and plant operators can trust.