Presentation on theme: "Larger Diameter Hymax® 14 – 24 Inches in Diameter Hymax is a Registered Trademark of Krausz Industries Ltd."— Presentation transcript:
Larger Diameter Hymax® 14 – 24 Inches in Diameter Hymax is a Registered Trademark of Krausz Industries Ltd.
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
Large Diameter Hymax Wide Range of Fit = Reduced Inventory Less Bolts = Fast Installation
Please 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
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
If Coupling Moves Due to Pressure Differential, Centering Pin Bottoms Out on Pipe End Preventing Loss of Seal Big End Small End Flow Direction
1 - Pin in Set Position2 – Pin Set for Installation Loosening of Pin allows for full Retraction of Coupling over pipe end
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 ORing Seal on the back side of the Pin Pins are One Inch Diameter – outside view
Seated Anti-Drift Pin – Inside View
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.