PERFORMANCE PIPELINING, INC. (PPI): T-LINER FAQ

PPI

T-LINER FREQUENTLY ASKED QUESTIONS

What is a T-Liner?
A T-Liner is a one-piece main and lateral liner. It is installed from the mainline pipe section and is accomplished without the need for any excavation. The liner is protected inside of a unique hose launching device. The liner inside of the protective hose is inserted into the main pipe from a manhole and pulled to the lateral connection that is to be renewed. The one-piece main/lateral lining is robotically positioned using a lateral camera. Once positioned, air pressure is applied and the main portion is inflated and the lateral portion is inverted (turned inside out) up into the lateral pipe.

A cleanout is required in order to clean the pipe and insure that the segment to be lined is free of roots and other debris. The cleanout is also used to insert a push camera down to the main allowing visual positioning for a perfect alignment of the liner with the connection. An existing cleanout may be used, or a new cleanout can be installed by traditional excavation or a clean-out can be installed utilizing a VAC-A-TEE.

How far can the T-Liner go up a lateral?
The T-Liner has been used to renew laterals as far as 160' in one continuous inverted liner from the mainline.

Can the T-Liner transition from 6" to 4"?
Yes, the liner is custom tailored to fit the pipe for transitioning from one pipe size to another.

What size main pipes will the T-Liner work in?
Currently, the T-Liner works with main pipe sizes of 8 to 18. The system is currently being engineered to work in 5.5 diameter main pipes up to 24.

What size laterals will the T-Liner work in?
Lateral diameters from 3 to 8 laterals have been renewed using the T-Liner.

Will a T-Liner work for a wye shaped connection?
Yes, the T-Liner is made in either a Tee shape or a Wye shape. There is no cutting required since the liner is open ended. The liner and bladder are inverted together as a liner/bladder assembly. The bladder is longer than the liner, so when the liner is fully inverted...the bladder continues to invert at least another 6", keeping the end of the liner open.

Is the T-Liner vacuum impregnated?
Yes, we use a patented vacuum impregnation system. The bladder is translucent and the liner is inside of the bladder when the resin is added to the liner during the vacuum impregnation process. The bladder is translucent so our workers and the project inspector can visually verify the liner is thoroughly saturated with no dry spots.

How long does a T-Liner take to cure?
2 hours ambient cure or 30 minutes with steam cure.

Will the T-liner negotiate 90 degree bends? Yes.

Will a cable Roding machine hurt the T-liner? No, we have tried to use these types of cutters to remove our liner when we made a mistake. It would not cut the liner. Also, once the lateral has been renewed, there should be no need for a root cutting machine.

Will the T-Liner stop infiltration?
Yes, and in most cases the liner will even pass an air test of 3.5 PSI for 4 minutes.

Will the T-Liner stop roots? Yes, the T-Liner is water tight and root tight.

Is the T-Liner chemical resistant?
Yes, we can design our liner to withstand a variety of chemicals and heat too. We have an engineering staff that will design the liner specifically for your project. Our liner has been tested in accordance with and meets the ASTM 10,000 hour chemical resistance testing.

How long will the liner last? Our study reports a service life of 100 hundred years and is certified by a PHD based on our liners physical properties.

What is the difference between a T-Liner and a top hat design?

1. The T-Liner has a 16" long full circle sleeve in the main pipe. A top hat configured liner has a small collar or flange.

2. The T-Liner being a cylinder shape, stands alone like a pipe and allows engineers to design its structural capabilities for withstanding soil loading and hydrostatic pressures. Top hat designed liners do not stand alone, rather it is designed to cling or hang on to the main pipe. Engineers cannot use every day engineering practices to design how well a collar will hang onto the main pipe.

3. A T-Liner is designed to renew the lateral and to make a structural, water tight connection to the main. The main portion of the T-Liner is similar to a full length cured in-place pipe running from manhole to manhole, but is only 16" long positioned at the lateral opening. A T-Liner covers up to 6 inches on either side of a 4" lateral, or 5 inches on either side of a 6" lateral opening.

A top hat designed collar is glued to the main pipe around the perimeter of the lateral opening. A Top hat is similar to lining the main pipe from manhole to manhole, but only lining the crown of the pipe for example a cured in-place pipe that covered from 10:00 to 2:00.

What is the difference between LMKs T-Liner and new T-Liner knockoffs?

1. The T-Liner is a one-piece main and lateral lining. This is accomplished by stitching the main and lateral together, and thermally welding their connection point. This one-piece liner is air tested at the LMK factory at 5 PSI before any resin is added tot he liner.

2. Knockoff systems are two pieces and they rely on the resin curing to bond the two liners into one. Therefore, their connection cannot be air tested before it is installed.

3. The T-Liner is inverted up into the lateral allowing the resin to fully contact the pipe where resin will migrate, sealing off roots and ground water.

4. The knockoff systems are pulled in through the main pipe and then up into the lateral pipe. Only two things can be occurring here.....

5. These liners have an outer coating which means, no resin will contact the pipe. That means this liner will never stick to the pipe and roots could grow in between the pipe. This liner with an outer coating up against the old pipe will not stop water migrating between the liner and the pipe.

6. These liners do not have an outer coating and as the liner is being pulled in-place.... the resin is being wiped off, almost like a squeegee, leaving the liner resin shy with poor results.

T-LINER FREQUENTLY ASKED QUESTIONS
What is a T-Liner?	A T-Liner is a one-piece main and lateral liner. It is installed from the mainline pipe section and is accomplished without the need for any excavation. The liner is protected inside of a unique hose launching device. The liner inside of the protective hose is inserted into the main pipe from a manhole and pulled to the lateral connection that is to be renewed. The one-piece main/lateral lining is robotically positioned using a lateral camera. Once positioned, air pressure is applied and the main portion is inflated and the lateral portion is inverted (turned inside out) up into the lateral pipe. A cleanout is required in order to clean the pipe and insure that the segment to be lined is free of roots and other debris. The cleanout is also used to insert a push camera down to the main allowing visual positioning for a perfect alignment of the liner with the connection. An existing cleanout may be used, or a new cleanout can be installed by traditional excavation or a clean-out can be installed utilizing a VAC-A-TEE.













How far can the T-Liner go up a lateral?	The T-Liner has been used to renew laterals as far as 160' in one continuous inverted liner from the mainline.


Can the T-Liner transition from 6" to 4"?	Yes, the liner is custom tailored to fit the pipe for transitioning from one pipe size to another.


What size main pipes will the T-Liner work in?	Currently, the T-Liner works with main pipe sizes of 8 to 18. The system is currently being engineered to work in 5.5 diameter main pipes up to 24.



What size laterals will the T-Liner work in?	Lateral diameters from 3 to 8 laterals have been renewed using the T-Liner.


Will a T-Liner work for a wye shaped connection?	Yes, the T-Liner is made in either a Tee shape or a Wye shape. There is no cutting required since the liner is open ended. The liner and bladder are inverted together as a liner/bladder assembly. The bladder is longer than the liner, so when the liner is fully inverted...the bladder continues to invert at least another 6", keeping the end of the liner open.







Is the T-Liner vacuum impregnated?	Yes, we use a patented vacuum impregnation system. The bladder is translucent and the liner is inside of the bladder when the resin is added to the liner during the vacuum impregnation process. The bladder is translucent so our workers and the project inspector can visually verify the liner is thoroughly saturated with no dry spots.







How long does a T-Liner take to cure?	2 hours ambient cure or 30 minutes with steam cure.

Will the T-liner negotiate 90 degree bends?	Yes.

Will a cable Roding machine hurt the T-liner?	No, we have tried to use these types of cutters to remove our liner when we made a mistake. It would not cut the liner. Also, once the lateral has been renewed, there should be no need for a root cutting machine.





Will the T-Liner stop infiltration?	Yes, and in most cases the liner will even pass an air test of 3.5 PSI for 4 minutes.


Will the T-Liner stop roots?	Yes, the T-Liner is water tight and root tight.

Is the T-Liner chemical resistant?	Yes, we can design our liner to withstand a variety of chemicals and heat too. We have an engineering staff that will design the liner specifically for your project. Our liner has been tested in accordance with and meets the ASTM 10,000 hour chemical resistance testing.






How long will the liner last?	Our study reports a service life of 100 hundred years and is certified by a PHD based on our liners physical properties.



What is the difference between a T-Liner and a top hat design?	1. The T-Liner has a 16" long full circle sleeve in the main pipe. A top hat configured liner has a small collar or flange. 2. The T-Liner being a cylinder shape, stands alone like a pipe and allows engineers to design its structural capabilities for withstanding soil loading and hydrostatic pressures. Top hat designed liners do not stand alone, rather it is designed to cling or hang on to the main pipe. Engineers cannot use every day engineering practices to design how well a collar will hang onto the main pipe. 3. A T-Liner is designed to renew the lateral and to make a structural, water tight connection to the main. The main portion of the T-Liner is similar to a full length cured in-place pipe running from manhole to manhole, but is only 16" long positioned at the lateral opening. A T-Liner covers up to 6 inches on either side of a 4" lateral, or 5 inches on either side of a 6" lateral opening. A top hat designed collar is glued to the main pipe around the perimeter of the lateral opening. A Top hat is similar to lining the main pipe from manhole to manhole, but only lining the crown of the pipe for example a cured in-place pipe that covered from 10:00 to 2:00.























What is the difference between LMKs T-Liner and new T-Liner knockoffs?	1. The T-Liner is a one-piece main and lateral lining. This is accomplished by stitching the main and lateral together, and thermally welding their connection point. This one-piece liner is air tested at the LMK factory at 5 PSI before any resin is added tot he liner. 2. Knockoff systems are two pieces and they rely on the resin curing to bond the two liners into one. Therefore, their connection cannot be air tested before it is installed. 3. The T-Liner is inverted up into the lateral allowing the resin to fully contact the pipe where resin will migrate, sealing off roots and ground water. 4. The knockoff systems are pulled in through the main pipe and then up into the lateral pipe. Only two things can be occurring here..... 5. These liners have an outer coating which means, no resin will contact the pipe. That means this liner will never stick to the pipe and roots could grow in between the pipe. This liner with an outer coating up against the old pipe will not stop water migrating between the liner and the pipe. 6. These liners do not have an outer coating and as the liner is being pulled in-place.... the resin is being wiped off, almost like a squeegee, leaving the liner resin shy with poor results.