Based on this product's specifications, here are some alternatives and similar models
Check valve (straight) Comap 429204P – 1/2" with adjustable setting and flow shut-off
Summary description:
Straight check valve Comap 429204P (1/2") with adjustable setting and flow shut-off. Designed to prevent backflow while allowing manual adjustment of the valve setting and the option to stop flow completely. Suitable for heating, plumbing and domestic water systems where controlled one-way flow and isolation are required. Facilitates maintenance and balancing of circuits.