3" Fig 1502 Hammer Union Retainer Ring (Snap Ring) – Oil & Gas Flowline Part

The 3" Figure 1502 Retainer Ring (also known as a snap ring) is a critical, yet often overlooked, structural component within a high-pressure hammer union assembly. Designed specifically for 3" Fig 1502 male subs, this heavy-duty steel ring serves a singular, vital purpose: it securely holds the three retainer segments in place within the male sub's machined groove. This action captures the heavy-duty wing nut, preventing it from slipping off the male sub while allowing it to rotate freely during make-up and break-out.

Manufactured from high-tensile spring steel or heavy-duty alloy wire, the retainer ring is engineered to withstand the extreme mechanical shock, heavy vibration, and rough handling typical in 15,000 PSI (15K) hydraulic fracturing, well testing, and cementing operations. When a wing nut is struck with a sledgehammer to seal the union, the retainer ring ensures that the internal segments do not dislodge, thereby maintaining the structural integrity of the entire connection.

Essential for field repairs and routine iron maintenance, the 3" 1502 Retainer Ring allows rig personnel to safely rebuild male hammer union ends, replace worn wing nuts, or swap out damaged retainer segments without having to discard the entire male sub.

Features & Benefits

• Captures Wing Nut: Securely locks the three retainer segments in the male sub's groove, making the wing nut a captive, rotating component.

• High-Tensile Construction: Made from robust spring steel or alloy wire to resist deformation and fatigue under intense mechanical shock.

• 15,000 PSI Compatibility: Integral to the assembly of 3" Figure 1502 connections rated for 15,000 PSI CWP.

• Standard Interchangeability: Fits all industry-standard 3" Figure 1502 male hammer union subs, swivel joints, and blind caps.

• Cost-Effective Maintenance: Allows for the field replacement of wing nuts and segments, extending the life of expensive flowline iron.

• Fast Installation: Can be easily installed or removed during routine iron recertification and inspection.

Specifications & Technical Details

Applications

This 3" Figure 1502 retainer ring is strictly used for the assembly and maintenance of high-pressure flowline iron. Typical applications include rebuilding the male end of frac pup joints, securing wing nuts onto style 10 or style 50 swivel joints, repairing choke manifold connections, and maintaining hammer union-equipped pump discharge manifolds.

Quality Assurance

Each retainer ring is manufactured to precise dimensional standards to ensure a tight, secure fit over the retainer segments. Materials are tested for tensile strength and elasticity to ensure the ring will not stretch, snap, or fail during the rigorous hammering required to seal a 15,000 PSI connection.

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