• 3 inch Fig 1502 adjustable choke seal piston rated 15000 PSI for API 6A choke valve internals, high pressure oilfield flowline component for flow iron systems
  • 3" 15,000 PSI Fig 1502 Adjustable Choke Seal Piston – High-Pressure Valve Internal
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3" 15,000 PSI Fig 1502 Adjustable Choke Seal Piston – High-Pressure Valve Internal

3" 15,000 PSI Fig 1502 Adjustable Choke Seal Piston – High-Pressure Valve Internal

$28.00 USD
$33.60 USD $28.00 USD
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The 3" Figure 1502 Adjustable Choke Seal Piston is a precision-engineered internal component designed to maintain critical pressure integrity within the choke bonnet assembly. Rated for a Cold Working Pressure (CWP) of 15,000 PSI, this piston serves as the dynamic sealing interface between the high-pressure wellbore fluids and the atmospheric side of the valve. It is a vital part for adjustable choke valves used in high-pressure well testing, frac flowback, and manifold operations.

Manufactured from high-grade forged stainless steel or premium alloy steel, the seal piston is machined to exacting tolerances and features a polished, low-friction surface finish. It is designed to house a stack of high-performance seals, including O-rings and backup rings, which prevent hazardous leaks along the stem. The robust construction ensures that the piston can withstand the intense mechanical stresses, high-velocity pulsations, and abrasive environments typical of 15M pressure systems without deforming or losing its sealing capability.

As a high-wear component, the 3" 1502 Seal Piston is essential for comprehensive choke maintenance. Replacing a worn or pitted piston during a bonnet rebuild restores factory-level sealing performance, ensuring precise flow regulation and maximum operator safety on the job site.

Features & Benefits

  • 15,000 PSI CWP Rating: Specifically built to handle the extreme pressures of modern choke and kill manifold systems.

  • Precision-Ground Finish: Features a high-quality surface finish to minimize seal wear and ensure smooth, consistent movement of the internal valve assembly.

  • Corrosion & Erosion Resistant: Constructed from premium materials to resist the damaging effects of sour gas (H2S), CO2, and abrasive fracturing fluids.

  • Dynamic Sealing Integrity: Engineered to house high-pressure seal stacks that provide a bubble-tight barrier under full operational loads.

  • Direct-Fit Compatibility: Designed as a drop-in replacement for industry-standard 3" Figure 1502 adjustable choke valves.

  • Enhanced Service Life: Robust metallurgy reduces the frequency of maintenance intervals by resisting pitting and mechanical fatigue.

Specifications & Technical Details

Category Specification
Component Type Choke Valve Seal Piston / Dynamic Seal Carrier
Compatibility 3" Figure 1502 Adjustable Choke Valves
Pressure Rating 15,000 PSI CWP (15M)
Material High-Strength Forged Stainless Steel / Alloy Steel
Surface Finish Precision Polished / Low-Friction
Seal Compatibility Standard 15K Piston Seal Sets
Service Type Standard and Sour Service (NACE MR0175)
Typical Applications Choke manifolds, well testing, frac flowback units
Testing & Compliance Dimensional verification and material hardness testing

Applications

This 3" Figure 1502 seal piston is a critical spare part for the maintenance of high-pressure adjustable chokes. It is primarily used in choke and kill manifolds, frac flowback skids, and well-testing headers where the valve must reliably regulate the flow of high-pressure oil, gas, and abrasive fluids without atmospheric leakage.

Quality Assurance

Each seal piston undergoes rigorous quality control inspections, including non-destructive examination (NDE) and precise dimensional gauging. The sealing surfaces are inspected for microscopic defects to ensure that once installed with new seals, the assembly will provide blowout-proof performance under maximum 15,000 PSI field conditions.

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