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Lateral connections
Tie in a lateral without replacing the main
Two ways to connect a 4″, 6″ or 8″ service line to an existing sewer or storm main. Core a hole, seat the connector, clamp it. The main stays in the ground.
Two ways in
Inside or outside the main
Which one
Match it to the main
Install
Four moves in the trench
FAQ
Common questions
Two ways in
Seal inside the main, or wrap the outside
Both go in from outside the pipe through a cored hole. The difference is where the seal sits and which mains it fits.
Inside the main
QwikSeal
One molded EPDM gasket with an internal pipe stop, secured by one 316 stainless steel clamp. Core the main, push it in, clamp it. For concrete, clay and PVC mains.
| Lateral | 4″, 6″ or 8″, SDR-35 / SDR-26 (green) or SCH 40 (grey) |
| Main | Concrete, clay and solid-wall PVC 8″ and larger, no upper limit. Corrugated 8″ to 24″, soil-tight. |
| Seal | Gasket conforms to ASTM C923 |
| Clamp | 316 stainless, 60 in-lb |
| Made in | USA |
Outside the main
Flexible Tap Saddles
A flexible PVC saddle that wraps an existing smooth-wall main and gives you a 4″ or 6″ branch, as a 90° tee or a 45° wye.
| Branch | 4″ or 6″ cast iron or plastic, tee or wye |
| Main | Smooth wall. 4″ saddles fit 6″ to 15″, 6″ saddles fit 8″ to 15″. Larger with 312-300 extension clamps. |
| Seal | Soil-tight as supplied. Water-tight to 10 psi with the TSPK-46 kit. |
| Compliance | AIS and BABA compliant |
| Made in | USA |
Which one
Start with the main
The pipe you are tapping decides most of it. Always follow the project specifications and your local code. QwikSeal is not recommended for metal pipe.
Concrete, clay or solid-wall PVC main, 8″ and larger
No upper limit on the main size
Corrugated plastic main
8″ to 24″ host, soil-tight connection
8″ lateral
QS-8 fits mains 15″ and larger
Spec calls for a flow-directed connection
45° branch with the flow
Branch must be water-tight
Holds 10 psi with butyl tape and reinforcing bars
Federally funded job
Tee and wye saddles are on the AIS and BABA list
Pipe entering a concrete manhole
Gives the grout something to grip
QwikSeal install
Four moves in the trench
Everything happens from outside the main. The full instructions, including the stub-and-fitting, bell-end and street-fitting methods, are on the QwikSeal page.
1
Core the hole
Core a perpendicular hole: 5″ for a 4″ lateral, 7″ for 6″, 9″ for 8″. File the edge clean of burrs.
2
Seat the QwikSeal
Remove the clamp, fold the QwikSeal and push it through. Unfold it and pull up until it stops against the inside of the pipe.
3
Cut the stub
Measure from the pipe stop to the top edge, add the fitting depth and cut. Bevel the leading edge and lubricate.
4
Drive and clamp
Drive the stub to the pipe stop with a block and hammer, then install the clamp at 60 in-lb.
Tested
The numbers behind the seal
QwikSeal performance tested to ASTM C923 Section 7 on a 24″ manhole base, plus hydrostatic testing installed in host pipe. Ratings apply to concrete, clay and solid-wall pipe.
Straight alignment, 10 minutes, no leaks
13 psi
Axial deflection, 10 minutes, no leaks
10 psi at 7°
Shear load of 150 lb per nominal inch of pipe ID, no leaks
10 psi
Tap Saddle with the TSPK-46 pressure kit
10 psi
Part numbers
Sizes and core holes
QwikSeal
| Part | Lateral | Color | Concrete, clay, solid wall | Corrugated | Core hole |
|---|---|---|---|---|---|
| QS-4 | 4″ SDR-35 | Green | 8″ and larger | 8″ to 24″ | 5″ |
| QS-4S40 | 4″ SCH 40 | Grey | 8″ and larger | 8″ to 24″ | 5″ |
| QS-6 | 6″ SDR-35 / SDR-26 | Green | 10″ and larger | 10″ to 24″ | 7″ |
| QS-6S40 | 6″ SCH 40 | Grey | 10″ and larger | 10″ to 24″ | 7″ |
| QS-8 | 8″ SDR-35 / SDR-26 | Green | 15″ and larger | 15″ to 24″ | 9″ |
Flexible Tap Saddles
| Part | Branch | Configuration | Fits main | Core hole |
|---|---|---|---|---|
| TST-4 | 4″ cast iron or plastic | Tee, 90° | 6″ to 15″ | 5″ |
| TSW-4 | 4″ cast iron or plastic | Wye, 45° | 6″ to 15″ | 5″ |
| TST-6 | 6″ cast iron or plastic | Tee, 90° | 8″ to 15″ | 7″ |
| TSW-6 | 6″ cast iron or plastic | Wye, 45° | 8″ to 15″ | 7″ |
Tap saddle mains must be smooth wall. For mains larger than 15″, add 312-300 extension clamps. TSPK-46 fits all four saddles.
FAQ
Lateral connection questions
Should I use QwikSeal or a Flexible Tap Saddle?
QwikSeal seals inside a cored hole and fits more mains: concrete, clay and solid-wall PVC 8 inches and larger with no upper limit, plus corrugated plastic from 8 to 24 inches. A Flexible Tap Saddle wraps the outside of a smooth-wall main from 6 to 15 inches (larger with extension clamps), gives you a tee or wye, and can be made water-tight to 10 psi with the TSPK-46 kit.
Which QwikSeal do I need?
Start with the lateral. A 4 inch lateral takes QS-4 (SDR-35) or QS-4S40 (SCH 40), 6 inch takes QS-6 or QS-6S40, and 8 inch takes QS-8. Green is SDR-35, grey is SCH 40. Then check the main meets the minimum size: 8 inches for the 4 inch parts, 10 inches for the 6 inch parts, 15 inches for QS-8.
What size hole do I core?
For QwikSeal, 5 inches for a 4 inch lateral, 7 inches for 6 inch and 9 inches for 8 inch. For tap saddles, 5 inches for the 4 inch saddles and 7 inches for the 6 inch saddles. Use a hole saw on plastic pipe and a diamond or abrasive coring bit on concrete or clay.
Is QwikSeal watertight on corrugated pipe?
On corrugated mains QwikSeal makes a soil-tight connection, in hosts from 8 to 24 inches. The hydrostatic and ASTM C923 ratings apply to concrete, clay and solid-wall plastic pipe.
Can I use QwikSeal on metal pipe?
It is not recommended for connection to metal pipe.
Tee or wye tap saddle?
A tee brings the branch off the main at 90 degrees. A wye angles it at 45 degrees, with the flow. Many agencies require a flow-directed connection on sanitary laterals, so check the specification. Where either is allowed, the tee has the shorter footprint in a tight trench.
Is a tap saddle water-tight?
As supplied the saddle makes a soil-tight connection for gravity sewer service. The TSPK-46 pressure kit adds butyl sealing tape and stainless reinforcing bars and is pressure tested to hold 10 psi.
Are these AIS and BABA compliant?
Fernco tee and wye Flexible Tap Saddles are on the AIS and BABA compliant list. See the AIS and BABA page for the full list.
Tapping a main you are not sure about?
Tell us the main, the lateral and the job. A Fernco rep will help you pick.