Gruvlok Figure 7307 HDPE Transition Rigid Coupling
Gruvlok® Figure 7307 HDPE Transition Rigid Coupling
The Gruvlok® Figure 7307 HDPE Transition Rigid Coupling is an innovative mechanical transition coupling engineered to securely connect High-Density Polyethylene (HDPE) pipe to grooved steel pipe, grooved-end fittings, and valves without the need for heat fusion or specialized joining equipment. Designed as a cost-effective alternative to fusion welding, the Figure 7307 creates a rigid, leak-resistant connection while significantly reducing installation time and labor costs. The coupling is compatible with HDPE pipe manufactured to ASTM F714, ASTM D2447, ASTM D3000, and ASTM D3035, with wall thicknesses ranging from SDR 32.5 through SDR 7.3, and connects directly to standard weight roll-grooved or cut-grooved steel pipe that meets Gruvlok® specifications.
Ideal for municipal water systems, mining operations, wastewater treatment facilities, industrial processing plants, utility infrastructure, and irrigation systems, the Figure 7307 provides a dependable transition between HDPE and steel piping.
Efficient HDPE-to-Steel Pipe Transition
Secure Mechanical Connection Without Fusion
The Gruvlok® Figure 7307 utilizes a four-bolt mechanical design that drives precision-machined gripping teeth into the exterior of the HDPE pipe while simultaneously engaging a keyed section into the groove of the steel pipe or fitting. This dual-action design creates a rigid mechanical connection with pressure capabilities that can exceed the pressure rating of the HDPE pipe itself, eliminating the need for costly fusion equipment or complex transition assemblies.
The gripping teeth are positioned away from the gasket to maximize sealing performance and maintain reliable operation throughout the coupling's service temperature range.
Low-Profile Housing Design
Built for Demanding Field Installations
The Figure 7307 features a rugged low-profile contoured housing with integrated exterior ramps that allow assembled pipelines to slide over obstacles more easily during installation or relocation. This practical design improves handling of long HDPE pipeline sections while minimizing the risk of coupling damage in challenging field environments.
Its durable construction makes it well suited for heavy-duty industrial and municipal applications requiring dependable mechanical performance.
Why Choose the Gruvlok® Figure 7307 HDPE Transition Rigid Coupling?
Reliable HDPE-to-Steel Piping Connections
The Gruvlok® Figure 7307 HDPE Transition Rigid Coupling combines advanced mechanical gripping technology, rigid joint performance, and simplified installation into one highly efficient transition solution. Its compatibility with multiple ASTM HDPE pipe standards and standard grooved steel piping, along with its ability to eliminate fusion welding while delivering exceptional pressure capability, makes it the preferred choice for engineers, contractors, municipalities, and industrial facilities seeking durable, leak-resistant HDPE-to-steel pipe connections with lower installation costs and long-term reliability.