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Stargrip® – Series 3000

Mechanical Joint Wedge Action Restraint for Ductile Iron Pipe (Sizes 3" - 60")

Circular mechanical ring with multiple blue bolts evenly spaced around its perimeter. The ring has a metallic, gray finish and appears to be a component of a larger assembly, possibly used in industrial or mechanical applications. Oversized Mechanical Joint Wedge Action Restraint

Information

The Stargrip® Mechanical Joint Restraint System is a unique product with a proven design that provides an exceptional restraining system for mechanical joint fittings (AWWA C153 or C110), valves, fire hydrants and all classes of ductile iron pipe (PC150 – PC350 and CL50 – CL56).

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  • Gland is made from high strength Ductile Iron per ASTM A536, Grade 65-45-12 and is compatible with all Mechanical Joints conforming to ANSI/AWWA C111/A21.11.
  • The Wedge Assembly is designed with a Break-Off Torque Control Head, ensuring proper installation.
  • The Stargrip® offers a full 5° deflection through 12″ size, 3° on 14″-24″, 2° on 30″-36″, 1° on 42″-48″ and 1/2° on 54″ & 60″.
  • Minimum safety factor of 2:1 • Stargrip® sizes 3″-36″ are listed with Underwriters Laboratories Inc. and sizes 3″-12″ are approved by Factory Mutual Research.
  • The Wedges are heat treated to a minimum of 370 BHN.
  • The Wedge Assembly is designed to fit specific pipe sizes.
  • Stargrip® eliminates tie rods and thrust blocks.
  • Standard gland color is Black.
  • Stargrip® may be used on steel pipe of any size. For steel pipe 12” and under a transition gasket is required if the diameter regimen is IPS. For steel pipe 14” and larger, the pipe’s outside diameter must be the same as ductile iron pipe (CIOD diameter regimen). For sizes 3” – 8”, minimum SCH40 steel pipe wall thickness is required. For sizes 10” through 16” the minimum wall thickness must be equal to or greater than PC350 ductile iron pipe. For sizes 18” and above, the minimum wall thickness of the steel pipe must be equal to or greater than PC 250 ductile iron pipe.

Restrainer mechanism shall be integrated into the design of the follower gland. As the mechanism is activated, multiple wedging action shall be imparted against the pipe increasing its resistance as internal pressure increases. After burial of the restraining mechanism, joint flexibility shall be maintained.

The actuating bolt shall be threaded into the restraining wedge and have a 1-1/4″ hex operating head. The restraining twist off head bolt system shall have a torque-limiting feature designed to break off at preset torque levels, thus insuring proper action of restraining device. Glands shall be manufactured of high strength ductile iron in accordance with ASTM A536 Grade 65-45-12 requirements. The wedge shall be manufactured of high strength ductile iron and be heat treated to a minimum hardness of 370 BHN. Applicable dimensions shall conform to ANSI/AWWA C111/A21.11 and shall be incorporated into the mechanical joint restraint so that the device facilitates use with standard mechanical joint bells.

The mechanical joint restraint mechanism shall have a maximum water working pressure of 350 PSI for sizes 3″- 16″, 250 PSI for sizes 18″- 48″ and 200 PSI for sizes 54″- 60″. All sizes shall have a minimum safety factor of 2:1 (i.e. twice the maximum pressure rating of the restraint). The mechanical joint restraint mechanism shall be Underwriters Laboratories listed on size 3″ through 36″ and Factory Mutual Research Approved on size 3″-12″. The restraint mechanism shall be Star® Pipe Products Stargrip® series 3000 or an approved equal.

*Please refer to the catalog for further details and specifications.

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