Larger Diameter Hymax® 14 – 24 Inches in Diameter Hymax is a Registered Trademark of Krausz Industries Ltd.

Larger Diameter Hymax® 14 – 24 Inches in Diameter

Hymax is a Registered Trademark of Krausz Industries Ltd.

Large Diameter Specifications

Meets or exceeds AWWA C219 Center Ring – ASTM A53 Grade A Steel End Rings – ASTM A 795 Steel Gaskets – NSF61 EPDM for water and sewerage Nuts, Bolts, Washer, Bridge and other Misc. Hardware – Type

304 Stainless Steel Nuts, Bolts and Washers include an anti-gall dry lube

coating Coating – 100% Fusion Bonded Epoxy for enhanced

corrosion protection with average of 14 Mils thickness Min Pipe Insertion Depth – 2.25 inches Working Pressure 14-16 inch – 260 psi, 18-24 inch – 232 psi

Nominal Pipe O.D. Product Range Inner Layer Outer Layer Pressure14 15.00-17.10 15.00-16.10 16.02-17.10 26016 17.10-19.20 17.10-18.19 18.11-19.20 26018 19.20-21.30 19.20-20.29 20.21-21.30 232

20 L.R. 19.60-21.70 19.60-20.69 20.61-21.70 23220 21.25-23.35 21.25-22.35 22.27-23.35 232

20 O.S. 21.50-23.60 21.50-22.60 22.52-23.60 23224 24.60-26.70 23.85-24.96 24.88-25.95 232

24 O.S. 24.00-26.10 24.60-25.67 25.59-26.70 232

Large Diameter HymaxWide Range of Fit = Reduced Inventory

Less Bolts = Fast Installation

Installation Instructions for 14” through 24”

Large Diameter Hymax Couplings

Installation Instructions for 14” through 24” Large Diameter

Hymax Couplings

PrecautionsPlease make the following notations when installing larger diameter Hymax Couplings

Always Verify Pipe Diameter with an O.D. Tape and Make sure it falls within the diameter range of the coupling

Always unpack the coupling and inspect for shipping damage

Prepare pipe ends and mark the stab depth according to directions

Back out Centering pins Size Gasket According to Instructions Never Lubricate Bolts (they are pre-lubricated) Do lubricate ductile iron and asbestos pipe Do not lubricate PVC, Steel or Polyethylene Pipe

surfaces

The Purpose of Centering Pins Prevention of Coupling Drift Over Pipe End

When in Maximum Transition

Big End

Small End

Flow Direction

Pressure Build Up Here Can Create Coupling Movement

The Purpose of Centering PinsIf Coupling Moves Due to Pressure Differential, Centering Pin Bottoms Out on Pipe End Preventing Loss of Seal

Big End

Small End

Flow Direction

14 to 24 Inch Hymax Installation ProcedurePrepare Pipe Ends – De-scale and Clean,Mark Pipe Ends for a Maximum Stab Depth of 5”

5” 5”

Loosen Centering Pins(Anti Drift Pins)

1 - Pin in Set Position 2 – Pin Set for Installation

Loosening of Pin allows for full Retraction of Coupling over pipe end

14 to 24 Inch HymaxStab Pipe Ends to the Proper Insertion Depth

Pipe Ends Stabbed into Couplings

Remaining End Gap Between Pipe Ends is 2 – 3 Inches

After Stabbing Pipe, Tighten the Centering Pins to seat the “O”Ring Seal on the back side of the Pin

Pins are One Inch Diameter – outside view

Seated Anti-Drift Pin – Inside View

Tighten All Bolts on Compression Ring to the required torque to properly seat the Gasket

Two Bolts per End Torque Requirement is

150 ft. lbs. Required Wrench – 17

to 21 inch long wrench handle and 15/16” (24 mm) pass through socket

Cross Tighten evenly Always check for leaks

prior to burial If leakage occurs, re-

torque nuts and bolts as required.