Installation instructions: pull-ring connections

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JACOB Pipework Systems – Innovation, Quality and Service Knowledge Installation instructions of pull-ring connections

Pull-rings are used in conjunction with U-shaped seals to connect pipe components and pressed components with a 6 mm lip. The use of different U-shaped seal profiles enables the same pull-ring to be used with 1 to 2 mm thick pipe components and pressed components.

To meet the different requirements of every system, JACOB offers a comprehensive and wide-ranging standard range which covers most requirements.

U-shaped seals

Pull-rings

QUICK CONNECT pull-rings

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Pull-rings without sealant

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General installation information on creating leak-proof connections

Repair damaged lipped ends (align)
Eliminate any unevenness from the lipped end
Assemble the pipework tension-free
Ensure when fitting the pull-ring that the U-shaped seal does not form any loops
Support horizontal pipework roughly every 4 metres. If there are several short pipe components in the pipeline, the interval between supports should be reduced
Attach branch pipes so that they do not generate any tension in the main pipeline
Tighten the bolts of two-part pull-rings evenly on both sides
Re-tighten the pull-rings after 24 hours to ensure they are as leak-proof as possible

Note: To connect JACOB pipe components with a 6 mm lip. A U-shaped seal and a pull-ring are needed for each connection. You need a 6 mm hexagon cap screwdriver to mount the pull-rings.

Step 1

Attach a U-shaped seal over one of the lipped pipe ends.

The U-shaped seal must be slightly stretched to enable it to be attached
The profiled side must face the pipe component that is being connected

Step 2

Position the connecting pipe and slide one pull-ring half over the lipped pipe end.

QUICK CONNECT pull-ring

First, attach the pull-ring half without the toggle clip

Two-part pull-ring

We recommend separating the two halves of the pull-ring beforehand

Ensure that the pipe components are properly aligned and the U-shaped seal is in the right position.

Note: We recommend that when fitting horizontal pipelines where condensate occurs, any points at which the U-shaped seal is glued should be positioned on top, and the connecting points of the pull-ring halves are horizontal. This ensures the maximum possible tightness at the lowest point of the connection.

Step 3

Press the second pull-ring half onto the lipped pipe ends.

N.B.: When closing the pull-ring, the U-shaped seal must not form any loops.

QUICK CONNECT pull-ring

Place the clasp over the closing hook and close the clip
To prevent the connection from loosening accidentally (such as due to vibration) tighten the bolt with a 10 Nm torque on the mounting face

Two-part pull-ring

Tighten the bolts evenly with a torque of 10 Nm

N.B.: A bolt tightening torque of 10 Nm is necessary for the QUICK CONNECT pull-ring, or 25 Nm for the two-part pull-ring, for shock explosion proof connection of up to 3 bar over-pressure.

Installation of pull-ring connections with a u-shaped seal

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