Clamping connector / screw connector without support tube for optimum grip and durability. The product group A3 is just right for anyone who wants to work fast, cost-effective and space-saving. The separate sealing and clamping function results in a clear division of functions. additionally allows the pressure-dependent clamping force that adjust the pressure loads in the application individually. The connector consists of only three components and thus allows a quick and easy Assembly without special tools. The latest state of the art makes it possible to access a support tube without. Thus, only one connector is required for each pipe outside diameter, pipe wall thicknesses are no longer an issue. For use with PVC pipes, a brass clamping set is used.