Yes, it is possible, but it must be done very carefully.
In a standard TR FLEX joint, the locking segment cavity and gasket seat are adjacent to each other. The joint should be retracted to engage the locking segments, a distance that will vary by size but averages less than 3/4".
In a TR FLEX Telescoping Sleeve, the locking segments cavity and the gasket seat are separated by an appreciable distance (depending on size, this can be up to approximately one foot.) Similarly, the location of the weld bead on a plain end for Telescoping Sleeve is considerably further back from the face of the plain end than on a standard TR FLEX plain end. It is these design features working together that allow the collapse and expansion of the Telescoping Sleeve while maintaining a reliable seal throughout the range of longitudinal movement.
The TR FLEX GRIPPER® is used to accommodate field cuts of TR FLEX® Pipe. The Gripper Ring takes the place of both the locking segments and the factory applied weld bead, which would be cut off on a field cut pipe.
If it should be deemed necessary to install a Telescoping Sleeve with a Gripper Ring, it is important to consider two things:
1. Once the Gripper Ring is tightened around the pipe installed in a Telescoping Sleeve, the ability for significant longitudinal movement is eliminated.
2. Prior to tightening the Gripper Ring, it must be determined that the pipe has not been pulled out past the gasket, which would prevent achieving a seal.
One way to do this is to measure from the face of the Telescoping Sleeve to a point approximately one inch past the back of the gasket seat. Apply a band of duct tape around the circumference of the field cut pipe with the edge of the tape closest to the face of the plain end located at the distance measured. Insert the gasket and the Gripper Ring, lubricate the gasket and plain end of the pipe and insert the plain end until the edge of the duct tape is flush with the face of the bell. After ensuring the Gripper Ring is square on the pipe, tighten the torque-limiting bolts of the Gripper Ring until the heads snap off.
If at all possible, check to be sure that the gasket is in place and fully compressed between the inside of the Telescoping Sleeve and the outside of the plain end of pipe.