2" Fully Lined Seat (Big John Style, 6" Long) for 3" Fig 1502 Adjustable Choke | Heavy-Duty Tungsten Carbide

The 2" Fully Lined "Big John" Style Seat (6-Inch Extended Length) is a premier, ultra-heavy-duty wear component engineered for high-volume 3-inch Figure 1502 Adjustable Choke Assemblies. Designed to establish a massive 2-inch maximum flow orifice, this specialized seat is built specifically to handle the most severe, high-rate flowback and well-testing conditions in 10,000 to 15,000 PSI manifold systems.

What sets this seat apart is its fully lined Tungsten Carbide interior combined with a 6-inch extended length. Unlike standard seats that only feature a carbide insert at the primary restriction point, the entire internal bore of this "Big John" seat is armored with premium tungsten carbide. This provides uncompromising, end-to-end defense against the catastrophic erosion caused by high-velocity frac sand, proppants, and abrasive wellbore fluids.

Furthermore, the extended 6-inch design plays a critical role in fluid dynamics. By elongating the protected flow path, this seat smooths out the violent turbulence and cavitation that occurs immediately after the pressure drop. This not only extends the life of the seat itself but actively protects your downstream choke body and piping from high-velocity washout, significantly reducing maintenance intervals and extending the operational lifespan of your entire manifold assembly.

Features & Benefits

• Fully Lined Tungsten Carbide: The entire internal bore is armored with ultra-hard tungsten carbide, providing maximum, end-to-end protection against severe sand erosion and high-velocity washout.

• Extended 6-Inch Length: Elongated design smooths turbulent flow and dissipates cavitation energy, shielding downstream piping and the choke body from localized wear.

• "Big John" Heavy-Duty Profile: Specifically designed for extreme-volume applications, allowing up to a 2-inch maximum flow area while maintaining precision adjustability.

• Extreme Pressure Durability: Engineered to maintain structural integrity and flow control in aggressive 10,000 PSI and 15,000 PSI environments.

• Minimized Downtime: The fully lined design drastically outlasts standard inserts in severe frac flowback conditions, keeping your high-volume operations running longer without teardowns.

Specifications & Technical Details

Applications

This 2" Fully Lined Extended Seat is built for the most aggressive oilfield environments. It is a mandatory upgrade for heavy-duty 3" choke and kill manifolds, extreme-volume frac flowback systems, high-rate production testing operations, and any high-pressure application where standard choke seats fail prematurely due to massive sand and proppant volumes.

Quality Assurance

Every "Big John" extended seat is subjected to rigorous quality control. The full-length tungsten carbide lining is inspected for flawless bonding and structural density, while the outer alloy steel body is precision-machined and dimensionally verified to guarantee a perfect, zero-clearance fit within standard 3" Fig 1502 adjustable choke bodies.

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