DUB-Swivel

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Each of the following swivels incorporate all the well established and patented DUB-Swivel design and features.

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TYPE 1
Type 1 swivels offer an API box connection at the leading end and a Clevis connection at the trailing end. The rigid connection allows more straight forward pushback, but it also places a more severe side loading on the swivel.

 

 

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2 Ton

5-80 Ton

TYPE 2
Type 2 swivels offer a Clevis connection at both ends with hardened, lockable Clevis pins. This style of swivel is the most common type and is the best for distributing side loads applied on the swivel due to its ability to pivot at either end. On the other hand, it does not allow the operator to push back without proper care and attention or the swivel may fold back on itself. Before rotation is re-commenced, the line must be pulled straight or damage may occur to the clevis ends.

The Clevis Pins are available as spare parts and must never be replaced with any type of pin not manufactured by DCD Design.

 

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TYPE 6
Type 6 swivels ( Stub-e-DUB™) are especially designed to fit inside custom built reamers. There are several manufacturers making these special reamers. They have a mounting flange allowing assembly into the reamer and thereby reducing the gap back to the utility being installed. The flange has jacking screws as well as a plugged water port. These swivels are totally self contained and greaseable, please apply to Customer Service for mounting specifications.

 

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TYPE 7
Type 7 swivels offer a Pin connection to the reamer or hole opener ahead of the swivel. There are several different types and sizes of threaded connections, see chart for details. The rigid connection allows more straightforward pushback, but it also places a more severe side loading on the swivel. Swivels with either UN or UNEF threads will fit reamers manufactured by Melfred Borzall.

 

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