The HARCO "Knock On" repair coupling is the best repair coupling available in the market today. The unique gasket design allows for travel in both directions, making it easy to slide the coupling back onto the existing pipe from the repair section.
The square face bell design allows for a larger object, such as a wood block, to be placed against the fitting in order to knock the repair coupling into place. All HARCO repair couplings are pressure rated to 200 psi and, with no bolts, there is nothing to tighten to engage the gasket. With no glue and no set time required, the repair coupling is completed as soon as you install it. Water pressure can be turned back on immediately, allowing you to resume operations as normal.
The combination of all these features make the HARCO "Knock-On" repair coupling the
simplest and quickest repair coupling available in the market today!