Based on this product's specifications, here are some alternatives and similar models
IMI TA TA tilslutningskobling - DN20 1 x 3/4 connection fitting
Summary description:
TA tilslutningskobling by IMI TA is a DN20 connection fitting with a 1 x 3/4 configuration for hydronic heating and plumbing systems. Designed for joining pipework and components, it supports standard DN20 piping and a 3/4 threaded connection. Suitable for installation in radiators, valves and manifold assemblies where a DN20 to 3/4 interface is required.