Based on this product's specifications, here are some alternatives and similar models
Brass Straight Union 1/2" FERRO SGU2 — plumbing fitting, female/male connection
Summary description:
FERRO SGU2 is a brass straight union for plumbing with a 1/2" nominal size. Designed for joining pipes or fittings in water and heating installations, this metal union provides a durable threaded connection suitable for repair and installation tasks. Typical uses include connecting valves, hoses, or rigid pipe runs where a straight threaded coupling is required.