HYMAX GRIP® THE TEETH MAKE THE DIFFERENCE.
HYMAX GRIP® joins and restrains a wide selection of pipes of different types and diameters, easily and reliably. Due to its patented design, it allows the joining of pipes of the same or different materials and diameters, and preventing axial pipe movement.
This market-leading restraint coupling family, invented and manufactured by Hymax, features a unique radial gripping system suitable for most metal and plastic pipes, combining a top-facing two-bolt grip coupling that enables quick and easy installation. The HYMAX GRIP’s patented gasket allows dynamic deflection of the pipe of up to 4 degrees per side, reducing future pipe cracks and breaks. The GRIP is made of highly durable ductile iron and can withstand a working temperature of up to +125°F, truly the perfect product for a fast and reliable restrained connection. HYMAX GRIP meets or exceeds standards AWWA C219, NSF-61, and NSF-372.
NEW from Hymax USA:
The HYMAX GRIP 14″/16” is the first restraint product of its size with four top-facing bolts and a stab-fit, one-piece design.
HYMAX GRIP products are now available with NBR gaskets (sizes 1.5″-12″).
NOTE: Our HYMAX products are not to be used for Petrochemical applications.
HIGH PRESSURE GRIP – HYMAX GRIP products are now offered in two options, a standard pressure version and a high pressure one with a specially designed grip chain.
For exact sizes, pressures and product information please refer to the specifications sheets.
PRECAUTIONS FOR HDPE PIPE: Note that the use of pipe stiffeners is required when you use the HYMAX GRIP on HDPE pipe.
HYMAX GRIP Installation Instructional Video
HYMAX GRIP Information Video
GRIP Pressure Testing
HYMAX GRIP installation video
UNMATCHED PERFORMANCE
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- Patented pipe grip – universal gripping system designed to restrain all types of metal and plastic pipes.
- The unique patented radial closing mechanism holds pipes tightly in place during installation, allowing full control over the gap between pipes.
- The patented GRIP chain offers circular restraint around the pipe, unlike typical wedge-style restraints that point-load the pipe.
- As the pipe applies axial pressure, the GRIP chain increasingly tightens over the pipe, preventing pipe pullout.
MULTIPLE APPLICATIONS
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- Suits a wide range of pipe diameters, replacing the need to use dedicated products and thus reducing inventory costs and saving shelf space.
- The HYMAX® GRIP fits different types of plastic and metal pipes and allows for up to 1.1” product tolerance.
EASE OF USE
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- Ready to use, stab-fit design features two top-facing bolts for quick and easy installation, reducing time in the ditch and improving worker safety.
- Comfortably slides over the pipe before final positioning.
EXTREMELY DURABLE DESIGN
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- High-quality sealing solution – patented hydraulically assisted gasket features two-stage sealing: mechanical sealing that is effective under vacuum or non-pressure; and self-inflated gasket using water pressure.
- Working temperature: -20°F to +125°F.
- Advanced anti-galling using unique dry treatment process on nuts and bolts, with Molecular Anti-Galling (MAG) based on embedded zinc, prevents galling and enables repeated bolt tightening; it also eliminates the need for grease, preventing dust and dirt build-up.
- Fusion-bonded epoxy coating enables an insulated product and prevents corrosion.
- Innovative radial closing design and sealing systems eliminate installation errors.
FLEXIBLE CONNECTION
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- During installation, allows up to 4° angular deflection on each end.
- Absorbs post-installation dynamic pipe deflection of up to 4° on each end, reducing the risk of damage and cracking due to ground shifts and temperature changes.
- Adapts to out-of-round pipe shape (up to 0.16), for optimum fit on both ends.