The GemLock™ Eccentric Reducer is designed for grooved piping systems—including fire sprinkler, HVAC, and plumbing—to provide fast installation, dependable sealing, and consistent flow performance. Featuring a Grooved connection and a nominal size of 8 x 5 in., this component integrates easily with compatible grooved piping and fittings.
Each unit is constructed from high-strength ductile iron manufactured to ASTM A536 standards and Painted for enhanced durability and service life. The included EPDM gasket is rated from -40 to 230°F and provides a reliable, leak-tight seal when properly installed and lubricated. The precision-engineered housing ensures joint rigidity and consistent alignment for optimal water flow.
GemLock™ grooved products simplify field assembly, reducing labor time compared with welding, threading, or flanging. The Eccentric Reducer is designed for use with GemLock™ grooved fittings and accessories, including approved pipe joint lubricants. When correctly installed, the gasket forms a pressure-responsive seal while the ductile iron housing maintains mechanical integrity under pressure.
This Eccentric Reducer has a nominal size of 8 x 5 in. and features a Grooved connection. It is built from ductile iron that meets ASTM A536 standards and is Painted for resistance to corrosion and mechanical wear. The EPDM gasket is suitable for service temperatures from -40 to 230°F, ensuring dependable long-term performance in fire protection, HVAC, and plumbing systems. This product is UL Listed and FM Approved when installed per GemLock™ specifications.
Maximum operating pressure is up to 300 PSI, depending on size and application. Before installation, confirm that pipe groove dimensions and surfaces meet GemLock™ standards. Clean the gasket and grooves, apply approved lubricant, and tighten bolts evenly to the specified torque. Follow current installation and groove specifications to achieve reliable performance.
Pressure ratings vary by size and include surges and end loads under normal conditions. Each product incorporates a nominal 1.5× safety factor relative to working pressure on standard weight steel pipe. Systems may be field-tested up to 1.5× the listed working pressure in accordance with manufacturer guidelines.
GemLock™ is a trusted leader in grooved piping technology. When installed as part of a complete GemLock™ system, this Eccentric Reducer delivers reliable, repeatable assembly, high strength, and long-term sealing integrity across a wide range of piping applications.
