There are three main types of PEX connections. These are connections using an expander tool, connections using a crimping tool or connections using compression fittings that don't require a special tool. The Wirsbo Propex fitting are expander type fittings. The Wirsbo Propex fittings require the Wirsbo expander tool and rings. The Wirsbo SSC fittings and Zurn Quiksert Fittings are crimp style fittings. These fittings require the WIrsbo SSC clamping tool. Finally the Wirsbo QS Style fittings will allow you to make connections without the use of a special tool. These are compression style fittings.
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