Ultra-Rib and ETI-sized pipe

Ultra-Rib Couplings

Couplings for Ultra-Rib and ETI-sized PVC sewer pipe, 12″ to 24″. Repair or extend an Ultra-Rib line, or transition it to SDR 35.

12″ to 24″ ETI to ETI ETI to SDR 35 ASTM D5926

What they’re for

Made for Ultra-Rib and ETI-sized pipe

Ultra-Rib PVC sewer pipe has a ribbed outside wall, so its ETI-sized outside diameter is larger than smooth SDR 35 pipe of the same nominal size. The 1072 and 1073 series are built to ETI outside diameters, from 12″ to 24″.

ETI to ETI. The 1072 series joins Ultra-Rib to Ultra-Rib for repairs and extensions.
ETI to SDR 35. The 1073 series transitions Ultra-Rib to standard PVC sewer pipe. An insert reducer bushing is included.
Five sizes in each series. 12″, 15″, 18″, 21″ and 24″, plus four reducing sizes in the 1072 series.

Sizes

Find your size

Measure the outside diameter of each pipe. On Ultra-Rib, measure over the ribs. No calipers? Wrap a tape around the pipe and divide by 3.14.

Part	Connects	ETI end O.D.	Other end O.D.
1072-1212	12″ ETI to 12″ ETI	13.00–15.00″	13.00–15.00″
1072-1515	15″ ETI to 15″ ETI	16.30–17.80″	16.30–17.80″
1072-1818	18″ ETI to 18″ ETI	19.80–21.30″	19.80–21.30″
1072-2121	21″ ETI to 21″ ETI	23.25–24.75″	23.25–24.75″
1072-2424	24″ ETI to 24″ ETI	25.50–27.00″	25.50–27.00″
1073-1212	12″ ETI to 12″ SDR 35	13.50–15.00″	12.00–12.75″
1073-1515	15″ ETI to 15″ SDR 35	16.30–17.80″	14.50–15.75″
1073-1818	18″ ETI to 18″ SDR 35	19.80–21.30″	17.50–19.00″
1073-2121	21″ ETI to 21″ SDR 35	23.25–24.75″	21.00–22.00″
1073-2424	24″ ETI to 24″ SDR 35	25.50–27.00″	24.00–25.00″

Part numbers link to dimensional drawings. Ultra-Rib is also in the Standard Couplings finder.

Specifications.

Sizes	12″, 15″, 18″, 21″ and 24″
Body	Flexible PVC, 10″ long
Clamps	300 series stainless steel. Installation torque is on each part’s drawing.
1073 series	Insert reducer bushing included
Maximum test pressure	4.3 psi (29.6 kPa)
Maximum operating temperature	140°F, non-continuous
Minimum operating temperature	−30°F
Standard	ASTM D5926