Crossover Adapter – 4" FIG 1502 Female (Thread) x 3" FIG 1502 Male (Wing)

The Crossover Adapter, 4" FIG 1502 Female (Thread) x 3" FIG 1502 Male (Wing), is an ultra-heavy-duty, forged steel flowline component engineered to safely handle massive step-down sizing transitions within extreme 15,000 PSI high-pressure piping systems. This crucial adapter allows field operators to seamlessly transition from large-capacity 4-inch large-bore FIG 1502 flowline iron down to standard 3-inch FIG 1502 equipment without compromising structural integrity or fluid containment.

In demanding surface operations—such as high-volume hydraulic fracturing, high-rate flowback, and large-scale well testing—surface layouts frequently require adapting large-bore 4-inch manifold headers or main lines down to standard 3-inch treatment lines. By bridging this substantial size gap with a single, integral fitting, this adapter eliminates the need for stacking multiple forged swages and temporary pipe segments. This significantly reduces the overall rig-up footprint, minimizes potential leak paths, and ensures a safer, more streamlined fluid velocity transition.

The 4" FIG 1502 end features a precision-machined female thread (sub) connection designed to mate with a 4-inch male wing, while the 3" FIG 1502 end is equipped with a standard heavy-duty male wingnut. Because both ends utilize the robust FIG 1502 profile, the entire crossover assembly safely maintains a full 15,000 PSI cold working pressure rating across the transition.

Features & Benefits

• High-Volume Step-Down Transition: Safely drops pipe diameter from a high-capacity 4-inch large-bore main line down to a standard 3-inch line, providing critical rig-up flexibility.

• Full 15K CWP Capacity: Maintains an uninterrupted high-pressure rating of 15,000 PSI across the entire step-down transition, built for extreme oilfield environments.

• Reduced Leak Paths: Single-piece forged construction replaces hazardous "stacked" adapter configurations, drastically reducing potential failure points and lowering operational risk.

• Heavy-Duty Forged Construction: Manufactured from high-strength alloy steel to withstand severe shock loads, extreme vibration, and massive volumes of abrasive fluid flow.

• Fast Field Installation: The 3-inch FIG 1502 male end includes a heavy-duty wingnut, allowing for rapid, secure makeup and breakout using standard rig hammers.

Specifications & Technical Details

Applications

This Female x Male step-down crossover adapter is widely used in high-pressure surface operations where transitioning from 4-inch main lines to 3-inch distribution lines is required. Typical applications include massive frac manifold connections, large-bore well testing packages, high-pressure cementing lines, pump discharge manifolds, and general flowback operations requiring secure 15,000 PSI step-down connections.

Quality Assurance

All our crossover adapters are manufactured from premium forged alloy steel and subjected to strict quality control processes. Each fitting undergoes rigorous dimensional inspection and hydrostatic pressure testing prior to shipment to ensure absolute safety, shell integrity, and seal performance under maximum working loads. Full material traceability is available to guarantee compliance with API guidelines.

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